/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/reducercommutativity/avg40-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:26:50,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:26:50,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:26:50,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:26:50,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:26:50,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:26:50,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:26:50,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:26:50,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:26:50,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:26:50,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:26:50,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:26:50,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:26:50,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:26:50,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:26:50,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:26:50,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:26:50,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:26:50,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:26:50,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:26:50,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:26:50,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:26:50,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:26:50,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:26:50,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:26:50,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:26:50,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:26:50,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:26:50,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:26:50,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:26:50,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:26:50,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:26:50,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:26:50,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:26:50,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:26:50,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:26:50,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:26:50,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:26:50,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:26:50,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:26:50,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:26:50,637 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 18:26:50,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:26:50,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:26:50,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:26:50,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:26:50,681 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:26:50,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:26:50,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:26:50,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:26:50,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:26:50,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:26:50,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:26:50,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:26:50,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:26:50,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:26:50,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:26:50,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:26:50,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:26:50,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:26:50,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:26:50,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:26:50,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:26:50,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:26:50,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:26:50,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:26:50,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:26:50,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:26:50,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:26:50,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:26:50,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:26:50,688 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 18:26:50,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:26:50,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:26:51,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:26:51,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:26:51,008 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:26:51,009 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg40-2.i [2020-10-12 18:26:51,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce615ded9/937a6cd40d744dffb67d1d7c894f621a/FLAGccf9d5f79 [2020-10-12 18:26:51,584 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:26:51,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg40-2.i [2020-10-12 18:26:51,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce615ded9/937a6cd40d744dffb67d1d7c894f621a/FLAGccf9d5f79 [2020-10-12 18:26:51,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce615ded9/937a6cd40d744dffb67d1d7c894f621a [2020-10-12 18:26:51,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:26:51,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:26:51,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:26:51,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:26:51,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:26:51,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:26:51" (1/1) ... [2020-10-12 18:26:51,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d9ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:51, skipping insertion in model container [2020-10-12 18:26:51,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:26:51" (1/1) ... [2020-10-12 18:26:51,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:26:51,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:26:52,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:26:52,241 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:26:52,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:26:52,283 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:26:52,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:52 WrapperNode [2020-10-12 18:26:52,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:26:52,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:26:52,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:26:52,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:26:52,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:52" (1/1) ... [2020-10-12 18:26:52,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:52" (1/1) ... [2020-10-12 18:26:52,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:52" (1/1) ... [2020-10-12 18:26:52,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:52" (1/1) ... [2020-10-12 18:26:52,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:52" (1/1) ... [2020-10-12 18:26:52,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:52" (1/1) ... [2020-10-12 18:26:52,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:52" (1/1) ... [2020-10-12 18:26:52,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:26:52,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:26:52,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:26:52,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:26:52,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:52" (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 18:26:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:26:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:26:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-12 18:26:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:26:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:26:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:26:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-12 18:26:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 18:26:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:26:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 18:26:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 18:26:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 18:26:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:26:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:26:52,784 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:26:52,785 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 18:26:52,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:26:52 BoogieIcfgContainer [2020-10-12 18:26:52,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:26:52,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:26:52,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:26:52,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:26:52,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:26:51" (1/3) ... [2020-10-12 18:26:52,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5553728b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:26:52, skipping insertion in model container [2020-10-12 18:26:52,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:52" (2/3) ... [2020-10-12 18:26:52,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5553728b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:26:52, skipping insertion in model container [2020-10-12 18:26:52,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:26:52" (3/3) ... [2020-10-12 18:26:52,799 INFO L109 eAbstractionObserver]: Analyzing ICFG avg40-2.i [2020-10-12 18:26:52,811 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:26:52,818 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:26:52,833 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:26:52,864 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:26:52,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:26:52,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:26:52,865 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:26:52,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:26:52,865 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:26:52,865 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:26:52,865 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:26:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 18:26:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:26:52,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:26:52,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:26:52,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:26:52,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:26:52,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-12 18:26:52,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:26:52,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137138221] [2020-10-12 18:26:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:26:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:53,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:54,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:54,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:26:54,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:26:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1720 [2020-10-12 18:26:54,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:26:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:26:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:26:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 18:26:55,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:26:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:55,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:26:55,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:26:55,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:26:55,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:55,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:26:55,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:55,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:26:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:55,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:26:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:55,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:26:55,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 18:26:55,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:26:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:26:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:26:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:26:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:55,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:26:55,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:55,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 18:26:55,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:55,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:26:55,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:55,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:26:55,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:26:55,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:26:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:55,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:55,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:26:55,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 18:26:55,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:26:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:26:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:26:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:26:55,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137138221] [2020-10-12 18:26:55,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:26:55,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:26:55,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138996141] [2020-10-12 18:26:55,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:26:55,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:26:55,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:26:55,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:26:55,520 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2020-10-12 18:26:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:26:55,921 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-12 18:26:55,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:26:55,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 18:26:55,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:26:55,934 INFO L225 Difference]: With dead ends: 83 [2020-10-12 18:26:55,935 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 18:26:55,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:26:55,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 18:26:55,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-12 18:26:55,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:26:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-12 18:26:55,999 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-12 18:26:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:26:56,000 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-12 18:26:56,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:26:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-12 18:26:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 18:26:56,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:26:56,003 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 18:26:56,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:26:56,004 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:26:56,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:26:56,005 INFO L82 PathProgramCache]: Analyzing trace with hash -883673527, now seen corresponding path program 1 times [2020-10-12 18:26:56,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:26:56,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312629712] [2020-10-12 18:26:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:26:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:56,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:56,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:56,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:57,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:26:57,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:26:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1307 [2020-10-12 18:26:57,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:57,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:26:57,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:26:57,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:26:57,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:26:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:26:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:57,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:57,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:26:57,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:26:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:26:57,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:26:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:26:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:57,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:26:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:57,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:26:57,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:26:57,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:26:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:26:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:26:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:26:57,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:26:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:57,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:26:57,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 18:26:57,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:26:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:26:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:26:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:57,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:26:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:57,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:26:57,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:26:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 18:26:57,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:26:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:26:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:26:57,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:26:57,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312629712] [2020-10-12 18:26:57,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:26:57,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:26:57,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948735002] [2020-10-12 18:26:57,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:26:57,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:26:57,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:26:57,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:26:57,478 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-12 18:26:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:26:57,574 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-12 18:26:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:26:57,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 18:26:57,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:26:57,576 INFO L225 Difference]: With dead ends: 58 [2020-10-12 18:26:57,576 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 18:26:57,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:26:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 18:26:57,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 18:26:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 18:26:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 18:26:57,584 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-12 18:26:57,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:26:57,585 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 18:26:57,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:26:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 18:26:57,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 18:26:57,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:26:57,587 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:26:57,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:26:57,587 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:26:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:26:57,588 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-12 18:26:57,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:26:57,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409699860] [2020-10-12 18:26:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:26:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:57,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:02,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:02,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:27:02,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:27:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 18:27:02,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:02,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:27:02,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 18:27:02,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:27:02,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:02,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:02,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:02,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:02,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:02,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:02,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:27:02,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:02,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:02,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:02,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:02,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:02,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:27:02,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 18:27:02,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:27:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:27:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:02,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 18:27:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:02,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:02,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:02,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:27:02,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:02,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 18:27:02,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:27:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:27:02,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:02,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:27:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:02,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:02,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:02,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:27:02,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:27:02,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:27:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:27:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:02,779 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 18:27:02,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409699860] [2020-10-12 18:27:02,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:02,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:27:02,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838581183] [2020-10-12 18:27:02,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:27:02,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:02,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:27:02,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:27:02,786 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-12 18:27:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:02,920 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-12 18:27:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:27:02,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-12 18:27:02,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:02,922 INFO L225 Difference]: With dead ends: 52 [2020-10-12 18:27:02,922 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 18:27:02,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:27:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 18:27:02,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-12 18:27:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 18:27:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 18:27:02,929 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-12 18:27:02,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:02,929 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 18:27:02,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:27:02,930 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 18:27:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 18:27:02,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:02,931 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:02,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:27:02,932 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:02,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:02,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1824311803, now seen corresponding path program 3 times [2020-10-12 18:27:02,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:02,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063207013] [2020-10-12 18:27:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:02,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:03,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:07,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:07,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:27:07,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:27:07,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 18:27:07,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:07,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:07,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 18:27:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:27:07,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:07,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:07,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:07,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:07,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:27:07,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:07,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:08,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:08,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:27:08,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 18:27:08,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:27:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:08,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 18:27:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:08,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:08,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:08,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:27:08,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:08,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 18:27:08,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:08,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:08,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:27:08,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:08,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:27:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:08,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:08,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:27:08,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 18:27:08,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:27:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 18:27:08,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063207013] [2020-10-12 18:27:08,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:08,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:27:08,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861371910] [2020-10-12 18:27:08,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:27:08,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:08,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:27:08,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:27:08,263 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-12 18:27:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:08,469 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-12 18:27:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:27:08,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-12 18:27:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:08,473 INFO L225 Difference]: With dead ends: 56 [2020-10-12 18:27:08,473 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 18:27:08,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:27:08,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 18:27:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 18:27:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 18:27:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 18:27:08,484 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-12 18:27:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:08,485 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 18:27:08,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:27:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 18:27:08,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 18:27:08,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:08,492 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:08,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:27:08,492 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:08,493 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-12 18:27:08,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:08,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584435615] [2020-10-12 18:27:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:08,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:08,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:10,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:13,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:13,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:27:13,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:27:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:27:13,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:27:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-12 18:27:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:27:13,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:13,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:13,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:13,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:13,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:27:13,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:13,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:13,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:13,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:13,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:27:13,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:13,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 18:27:13,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:27:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:27:13,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:13,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 18:27:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:13,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:13,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:13,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:13,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:27:13,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 18:27:13,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:27:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:27:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:13,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 18:27:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:13,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:13,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:27:13,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 18:27:13,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:27:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:27:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 18:27:13,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584435615] [2020-10-12 18:27:13,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:13,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:27:13,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134108244] [2020-10-12 18:27:13,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:27:13,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:13,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:27:13,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:27:13,799 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 18:27:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:13,958 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 18:27:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:27:13,958 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 18:27:13,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:13,959 INFO L225 Difference]: With dead ends: 60 [2020-10-12 18:27:13,959 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 18:27:13,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:27:13,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 18:27:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 18:27:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 18:27:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 18:27:13,966 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 18:27:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:13,966 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 18:27:13,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:27:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 18:27:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 18:27:13,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:13,968 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:13,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:27:13,968 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:13,969 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-12 18:27:13,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:13,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253551212] [2020-10-12 18:27:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:19,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:19,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:27:19,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:27:19,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 18:27:19,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:27:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 18:27:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:27:19,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:19,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:19,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:19,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:19,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:19,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:27:19,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:19,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:19,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:19,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:19,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:19,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:27:19,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 18:27:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:27:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:27:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:19,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 18:27:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:19,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:19,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:19,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:27:19,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:19,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 18:27:19,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:27:19,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:19,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:27:19,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 18:27:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:19,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:27:19,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 18:27:19,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:27:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:27:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 18:27:19,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253551212] [2020-10-12 18:27:19,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:19,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:27:19,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170509220] [2020-10-12 18:27:19,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:27:19,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:19,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:27:19,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:27:19,330 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-12 18:27:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:19,519 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-12 18:27:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:27:19,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-12 18:27:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:19,521 INFO L225 Difference]: With dead ends: 64 [2020-10-12 18:27:19,521 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 18:27:19,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:27:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 18:27:19,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 18:27:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:27:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-12 18:27:19,528 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-12 18:27:19,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:19,528 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-12 18:27:19,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:27:19,529 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-12 18:27:19,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:27:19,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:19,530 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:19,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:27:19,530 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:19,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2026447487, now seen corresponding path program 6 times [2020-10-12 18:27:19,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:19,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038052284] [2020-10-12 18:27:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:19,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:24,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:24,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:27:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:24,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:27:24,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:24,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:27:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 18:27:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:27:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:24,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:24,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:24,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:24,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:24,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:24,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:24,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:24,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:24,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:24,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:27:24,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:24,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 18:27:24,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:24,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:27:24,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:24,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:27:24,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:24,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 18:27:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:24,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:24,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:24,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:27:24,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 18:27:24,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:27:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:27:24,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:27:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:24,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:24,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:27:24,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:24,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 18:27:24,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:24,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:27:24,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:24,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:27:24,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 18:27:24,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038052284] [2020-10-12 18:27:24,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:24,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:27:24,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418307324] [2020-10-12 18:27:24,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:27:24,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:24,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:27:24,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:27:24,798 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-12 18:27:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:25,001 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 18:27:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:27:25,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 18:27:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:25,002 INFO L225 Difference]: With dead ends: 68 [2020-10-12 18:27:25,002 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 18:27:25,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:27:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 18:27:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 18:27:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 18:27:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 18:27:25,009 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-12 18:27:25,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:25,009 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 18:27:25,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:27:25,009 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 18:27:25,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 18:27:25,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:25,011 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:25,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:27:25,011 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:25,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:25,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-12 18:27:25,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:25,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047701207] [2020-10-12 18:27:25,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:25,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:30,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:30,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 18:27:30,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:30,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:27:30,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:27:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:27:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:30,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:30,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:30,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:30,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:30,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:30,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:30,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:30,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:27:30,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:30,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 18:27:30,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:27:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:27:30,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:30,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 18:27:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:30,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:30,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:27:30,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 18:27:30,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:30,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:27:30,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:30,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:27:30,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:27:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:30,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:30,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:30,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:30,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:27:30,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:30,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 18:27:30,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:27:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:27:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 18:27:30,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047701207] [2020-10-12 18:27:30,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:30,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:27:30,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587751875] [2020-10-12 18:27:30,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:27:30,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:30,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:27:30,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:27:30,375 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-12 18:27:30,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:30,594 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-12 18:27:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:27:30,594 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-12 18:27:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:30,595 INFO L225 Difference]: With dead ends: 72 [2020-10-12 18:27:30,595 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 18:27:30,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:27:30,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 18:27:30,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 18:27:30,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 18:27:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-12 18:27:30,610 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-12 18:27:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:30,611 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-12 18:27:30,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:27:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-12 18:27:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 18:27:30,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:30,612 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:30,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:27:30,612 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:30,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:30,613 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-12 18:27:30,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:30,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506663935] [2020-10-12 18:27:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:30,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:35,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:35,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 18:27:35,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:35,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:27:35,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:27:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:27:35,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:35,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:35,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:35,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:35,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:35,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:35,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:35,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:35,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:35,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:35,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:35,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:35,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:35,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:27:35,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:35,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 18:27:35,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:27:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:27:35,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 18:27:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:35,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:35,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:35,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:27:35,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:35,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 18:27:35,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:27:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:27:35,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:35,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:27:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:35,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:35,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:35,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:35,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:27:35,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:35,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 18:27:35,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:27:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:27:35,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 18:27:35,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506663935] [2020-10-12 18:27:35,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:35,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:27:35,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948139820] [2020-10-12 18:27:35,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:27:35,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:35,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:27:35,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:27:35,944 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-12 18:27:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:36,247 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-12 18:27:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:27:36,248 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 18:27:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:36,249 INFO L225 Difference]: With dead ends: 76 [2020-10-12 18:27:36,250 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 18:27:36,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:27:36,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 18:27:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 18:27:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 18:27:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 18:27:36,257 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-12 18:27:36,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:36,257 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 18:27:36,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:27:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 18:27:36,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 18:27:36,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:36,259 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:36,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:27:36,259 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:36,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:36,259 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-12 18:27:36,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:36,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585321971] [2020-10-12 18:27:36,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:36,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:36,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:41,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:41,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 18:27:41,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:41,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:27:41,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:27:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 18:27:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:27:41,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:41,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:41,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:41,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:41,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:41,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:41,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:41,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:41,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:41,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:27:41,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:41,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 18:27:41,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:27:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:27:41,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 18:27:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:41,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:41,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:27:41,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 18:27:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:27:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:27:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 18:27:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:41,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:41,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:27:41,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 18:27:41,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:27:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:27:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 18:27:41,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585321971] [2020-10-12 18:27:41,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:41,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:27:41,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890021073] [2020-10-12 18:27:41,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:27:41,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:41,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:27:41,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:27:41,598 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-12 18:27:41,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:41,901 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-12 18:27:41,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:27:41,902 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 18:27:41,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:41,903 INFO L225 Difference]: With dead ends: 80 [2020-10-12 18:27:41,904 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 18:27:41,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:27:41,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 18:27:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-12 18:27:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 18:27:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-12 18:27:41,911 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-12 18:27:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:41,911 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-12 18:27:41,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:27:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-12 18:27:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 18:27:41,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:41,912 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:41,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:27:41,912 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:41,913 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-12 18:27:41,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:41,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419830240] [2020-10-12 18:27:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:41,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:41,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:46,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 18:27:46,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:46,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:27:46,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:46,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:27:46,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:46,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:27:46,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:46,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:46,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:46,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:46,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:46,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:46,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:46,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:27:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:27:46,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:27:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:27:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:47,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 18:27:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:47,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:47,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:47,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:27:47,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:47,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 18:27:47,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:27:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:27:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:47,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:27:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:47,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:47,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:47,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:47,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:27:47,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 18:27:47,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:27:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:27:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 18:27:47,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419830240] [2020-10-12 18:27:47,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:47,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:27:47,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746135186] [2020-10-12 18:27:47,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:27:47,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:47,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:27:47,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:27:47,260 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-12 18:27:47,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:47,622 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-12 18:27:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:27:47,622 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-12 18:27:47,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:47,623 INFO L225 Difference]: With dead ends: 84 [2020-10-12 18:27:47,623 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 18:27:47,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:27:47,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 18:27:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-12 18:27:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 18:27:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 18:27:47,630 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-12 18:27:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:47,630 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 18:27:47,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:27:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 18:27:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 18:27:47,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:47,631 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:47,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:27:47,632 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:47,632 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-12 18:27:47,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:47,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984405586] [2020-10-12 18:27:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:47,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:47,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:47,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:52,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 18:27:52,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:27:52,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:27:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:27:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:52,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:52,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:52,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:52,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:52,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:52,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:27:52,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:52,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 18:27:52,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:27:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:27:52,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:52,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 18:27:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:52,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:27:52,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 18:27:52,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:27:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:27:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:52,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:27:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:52,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:53,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:53,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:27:53,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 18:27:53,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:27:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:27:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 18:27:53,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984405586] [2020-10-12 18:27:53,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:53,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:27:53,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892258110] [2020-10-12 18:27:53,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:27:53,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:53,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:27:53,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:27:53,050 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-12 18:27:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:53,385 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-12 18:27:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:27:53,385 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-12 18:27:53,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:53,387 INFO L225 Difference]: With dead ends: 88 [2020-10-12 18:27:53,387 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 18:27:53,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:27:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 18:27:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 18:27:53,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 18:27:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-12 18:27:53,394 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-12 18:27:53,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:53,395 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-12 18:27:53,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:27:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-12 18:27:53,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 18:27:53,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:53,396 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:53,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:27:53,397 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:53,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:53,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-12 18:27:53,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:53,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439097734] [2020-10-12 18:27:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:53,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:58,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 18:27:58,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:27:58,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:27:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:27:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:58,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:58,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:58,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:58,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:58,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:58,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:58,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:58,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:58,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:58,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:27:58,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:58,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 18:27:58,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:27:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:27:58,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:58,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:27:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:58,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:27:58,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 18:27:58,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:27:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:27:58,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:58,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:27:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:58,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:58,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:27:58,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 18:27:58,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:27:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:27:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 18:27:58,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439097734] [2020-10-12 18:27:58,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:58,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:27:58,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494438005] [2020-10-12 18:27:58,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:27:58,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:58,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:27:58,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:27:58,850 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-12 18:27:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:59,233 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-12 18:27:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:27:59,234 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-12 18:27:59,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:59,235 INFO L225 Difference]: With dead ends: 92 [2020-10-12 18:27:59,235 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 18:27:59,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:27:59,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 18:27:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-12 18:27:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 18:27:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-12 18:27:59,243 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-12 18:27:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:59,243 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-12 18:27:59,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:27:59,243 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-12 18:27:59,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 18:27:59,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:59,245 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:59,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:27:59,245 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:59,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:59,246 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-12 18:27:59,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:59,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997708306] [2020-10-12 18:27:59,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:59,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:04,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 18:28:04,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:04,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:28:04,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:28:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:28:04,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:04,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:04,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:04,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:04,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:04,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:04,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:04,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:04,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:04,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:04,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:28:04,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 18:28:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:28:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:28:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 18:28:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:04,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:28:04,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 18:28:04,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:28:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:28:04,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:04,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 18:28:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:05,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:28:05,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:05,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-12 18:28:05,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:28:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:28:05,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 18:28:05,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997708306] [2020-10-12 18:28:05,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:05,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 18:28:05,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480309822] [2020-10-12 18:28:05,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 18:28:05,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:05,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 18:28:05,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:28:05,215 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-12 18:28:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:05,685 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-12 18:28:05,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:28:05,686 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-12 18:28:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:05,687 INFO L225 Difference]: With dead ends: 96 [2020-10-12 18:28:05,687 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 18:28:05,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:28:05,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 18:28:05,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-12 18:28:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 18:28:05,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-12 18:28:05,698 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-12 18:28:05,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:05,699 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-12 18:28:05,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 18:28:05,699 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-12 18:28:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 18:28:05,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:05,700 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:05,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:28:05,701 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:05,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:05,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-12 18:28:05,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:05,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406551618] [2020-10-12 18:28:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 18:28:10,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:10,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:28:10,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:28:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 18:28:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:10,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:10,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:10,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:10,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:10,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:10,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 18:28:10,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:28:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:11,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 18:28:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:11,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:11,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 18:28:11,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:28:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:11,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:28:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:11,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:11,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 18:28:11,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:28:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-12 18:28:11,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406551618] [2020-10-12 18:28:11,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:11,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:28:11,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193090613] [2020-10-12 18:28:11,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:28:11,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:11,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:28:11,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:28:11,483 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-12 18:28:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:11,855 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-12 18:28:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:28:11,855 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-12 18:28:11,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:11,856 INFO L225 Difference]: With dead ends: 100 [2020-10-12 18:28:11,856 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 18:28:11,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:28:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 18:28:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 18:28:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 18:28:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-12 18:28:11,870 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-12 18:28:11,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:11,871 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-12 18:28:11,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:28:11,871 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-12 18:28:11,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 18:28:11,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:11,873 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:11,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:28:11,873 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:11,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-12 18:28:11,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:11,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629505349] [2020-10-12 18:28:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:16,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 18:28:16,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 18:28:16,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:28:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 18:28:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:28:16,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:16,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:16,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:16,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:16,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:16,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:16,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:16,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:16,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:17,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:28:17,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:17,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 18:28:17,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:28:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:28:17,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:17,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 18:28:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:17,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:28:17,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:17,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 18:28:17,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:28:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:28:17,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:17,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:28:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:17,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:17,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:28:17,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:17,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 18:28:17,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:28:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:28:17,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 18:28:17,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629505349] [2020-10-12 18:28:17,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:17,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:28:17,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591513327] [2020-10-12 18:28:17,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:28:17,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:17,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:28:17,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:28:17,731 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-12 18:28:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:18,115 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-12 18:28:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:28:18,115 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-12 18:28:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:18,116 INFO L225 Difference]: With dead ends: 104 [2020-10-12 18:28:18,116 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 18:28:18,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:28:18,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 18:28:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-12 18:28:18,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 18:28:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-12 18:28:18,123 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-12 18:28:18,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:18,124 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-12 18:28:18,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:28:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-12 18:28:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 18:28:18,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:18,125 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:18,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:28:18,126 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:18,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-12 18:28:18,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:18,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911458099] [2020-10-12 18:28:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:18,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:18,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 18:28:23,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:28:23,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:28:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:23,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:23,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:28:23,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:23,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 18:28:23,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:28:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 18:28:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:28:23,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 18:28:23,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:28:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 18:28:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:28:23,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 18:28:23,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:28:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 18:28:23,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911458099] [2020-10-12 18:28:23,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:23,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 18:28:23,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329762059] [2020-10-12 18:28:23,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 18:28:23,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:23,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 18:28:23,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:28:23,833 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-12 18:28:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:24,329 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-12 18:28:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:28:24,329 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-12 18:28:24,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:24,330 INFO L225 Difference]: With dead ends: 108 [2020-10-12 18:28:24,331 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 18:28:24,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:28:24,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 18:28:24,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-12 18:28:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 18:28:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-12 18:28:24,338 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-12 18:28:24,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:24,339 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-12 18:28:24,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 18:28:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-12 18:28:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 18:28:24,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:24,340 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:24,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:28:24,341 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:24,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-12 18:28:24,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:24,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463411731] [2020-10-12 18:28:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:24,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:24,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:29,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 18:28:29,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:29,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:28:29,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:29,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:28:29,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:29,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:28:29,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:29,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:29,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:29,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:29,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:29,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:29,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:29,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:29,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:29,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:28:29,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:29,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 18:28:29,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:28:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:28:29,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:29,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 18:28:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:29,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:29,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:28:29,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:29,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 18:28:29,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:28:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:28:29,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:29,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 18:28:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:29,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:30,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:28:30,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 18:28:30,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:28:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:28:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-12 18:28:30,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463411731] [2020-10-12 18:28:30,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:30,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:28:30,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541789411] [2020-10-12 18:28:30,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:28:30,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:30,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:28:30,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:28:30,142 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-12 18:28:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:30,669 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-12 18:28:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:28:30,669 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-12 18:28:30,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:30,670 INFO L225 Difference]: With dead ends: 112 [2020-10-12 18:28:30,670 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 18:28:30,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:28:30,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 18:28:30,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 18:28:30,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 18:28:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-12 18:28:30,677 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-12 18:28:30,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:30,677 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-12 18:28:30,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:28:30,677 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-12 18:28:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 18:28:30,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:30,679 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:30,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:28:30,679 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-12 18:28:30,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:30,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674040401] [2020-10-12 18:28:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:30,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:30,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:35,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 18:28:35,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 18:28:35,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:28:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 18:28:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:35,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:35,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:35,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:35,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:35,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:35,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:35,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:28:35,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:35,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 18:28:35,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:35,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:28:35,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:35,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:35,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:28:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:36,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:36,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:36,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:28:36,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 18:28:36,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:28:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:36,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:28:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:36,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:36,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:36,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:28:36,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:36,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 18:28:36,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:28:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 18:28:36,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674040401] [2020-10-12 18:28:36,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:36,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:28:36,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968717273] [2020-10-12 18:28:36,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:28:36,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:36,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:28:36,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:28:36,526 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-12 18:28:37,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:37,155 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-12 18:28:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 18:28:37,156 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-12 18:28:37,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:37,156 INFO L225 Difference]: With dead ends: 116 [2020-10-12 18:28:37,157 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 18:28:37,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:28:37,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 18:28:37,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-12 18:28:37,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 18:28:37,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-12 18:28:37,162 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-12 18:28:37,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:37,163 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-12 18:28:37,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:28:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-12 18:28:37,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 18:28:37,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:37,165 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:37,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:28:37,165 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:37,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-12 18:28:37,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:37,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435697220] [2020-10-12 18:28:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:37,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:37,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:42,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:42,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 18:28:42,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 18:28:42,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:28:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 18:28:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:28:42,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:42,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:42,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:42,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:42,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:42,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:42,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:28:42,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 18:28:42,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:28:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:42,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:28:42,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 18:28:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:42,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:42,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:28:42,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:42,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-12 18:28:42,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:28:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:28:42,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:42,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 18:28:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:42,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:43,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:43,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:28:43,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:43,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 18:28:43,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:28:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:28:43,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-12 18:28:43,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435697220] [2020-10-12 18:28:43,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:43,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 18:28:43,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045923466] [2020-10-12 18:28:43,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 18:28:43,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:43,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 18:28:43,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:28:43,215 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-12 18:28:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:43,857 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-12 18:28:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 18:28:43,859 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-12 18:28:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:43,860 INFO L225 Difference]: With dead ends: 120 [2020-10-12 18:28:43,860 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 18:28:43,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 18:28:43,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 18:28:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 18:28:43,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 18:28:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-12 18:28:43,877 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-12 18:28:43,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:43,880 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-12 18:28:43,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 18:28:43,880 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-12 18:28:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 18:28:43,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:43,883 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:43,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:28:43,885 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:43,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-12 18:28:43,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:43,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130304305] [2020-10-12 18:28:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:43,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-12 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:28:49,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:49,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:49,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:49,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:49,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:49,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:49,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:49,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:49,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:49,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:49,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 18:28:49,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:28:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:28:49,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:49,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:28:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:49,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:49,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:49,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:49,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:49,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 18:28:49,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:28:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:28:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 18:28:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:49,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:49,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:49,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 18:28:49,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:28:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:28:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-12 18:28:49,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130304305] [2020-10-12 18:28:49,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:49,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 18:28:49,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220852953] [2020-10-12 18:28:49,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 18:28:49,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:49,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 18:28:49,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 18:28:49,929 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-12 18:28:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:50,672 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-12 18:28:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 18:28:50,673 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-12 18:28:50,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:50,674 INFO L225 Difference]: With dead ends: 124 [2020-10-12 18:28:50,674 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 18:28:50,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 18:28:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 18:28:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 18:28:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 18:28:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-12 18:28:50,683 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-12 18:28:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:50,683 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-12 18:28:50,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 18:28:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-12 18:28:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 18:28:50,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:50,685 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:50,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:28:50,686 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:50,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:50,687 INFO L82 PathProgramCache]: Analyzing trace with hash -783989919, now seen corresponding path program 21 times [2020-10-12 18:28:50,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:50,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056359847] [2020-10-12 18:28:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:50,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:50,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:55,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:55,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 18:28:55,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:55,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 18:28:55,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:28:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 18:28:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:28:55,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:55,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:55,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:55,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:55,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:55,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:55,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:55,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:55,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:28:55,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:55,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-12 18:28:55,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:28:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:28:55,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:56,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 18:28:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:56,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-12 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 18:28:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:56,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:56,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:56,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:28:56,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-12 18:28:56,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:28:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:28:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 18:28:56,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056359847] [2020-10-12 18:28:56,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:56,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 18:28:56,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954402554] [2020-10-12 18:28:56,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 18:28:56,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:56,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 18:28:56,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:28:56,777 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-12 18:28:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:57,483 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-12 18:28:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 18:28:57,485 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-12 18:28:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:57,486 INFO L225 Difference]: With dead ends: 128 [2020-10-12 18:28:57,486 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 18:28:57,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 18:28:57,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 18:28:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-12 18:28:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 18:28:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-12 18:28:57,497 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-12 18:28:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:57,497 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-12 18:28:57,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 18:28:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-12 18:28:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 18:28:57,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:57,499 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:57,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:28:57,499 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:57,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1533894239, now seen corresponding path program 22 times [2020-10-12 18:28:57,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:57,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506890748] [2020-10-12 18:28:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:57,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:57,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:02,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:02,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 18:29:02,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:02,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 18:29:02,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:29:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:02,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:29:02,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:02,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:02,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:02,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:02,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:02,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:02,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:02,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:02,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:29:02,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-12 18:29:02,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:29:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:29:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:03,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:29:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:03,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:03,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:29:03,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:03,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-12 18:29:03,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:03,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:29:03,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:03,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:29:03,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:03,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 18:29:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:03,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:03,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:29:03,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-12 18:29:03,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:29:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:29:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-12 18:29:03,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506890748] [2020-10-12 18:29:03,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:03,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 18:29:03,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621787964] [2020-10-12 18:29:03,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 18:29:03,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:03,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 18:29:03,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 18:29:03,667 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-12 18:29:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:04,408 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-12 18:29:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 18:29:04,409 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-12 18:29:04,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:04,410 INFO L225 Difference]: With dead ends: 132 [2020-10-12 18:29:04,410 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 18:29:04,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 18:29:04,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 18:29:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-12 18:29:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 18:29:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-12 18:29:04,418 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-12 18:29:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:04,418 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-12 18:29:04,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 18:29:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-12 18:29:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 18:29:04,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:04,420 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:04,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 18:29:04,420 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:04,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:04,420 INFO L82 PathProgramCache]: Analyzing trace with hash -242973987, now seen corresponding path program 23 times [2020-10-12 18:29:04,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:04,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147925934] [2020-10-12 18:29:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:04,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:04,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 18:29:09,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:09,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:29:09,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:29:09,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:09,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:29:09,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:09,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:09,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:09,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:09,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:09,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:29:09,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:09,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 18:29:09,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:29:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:29:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 18:29:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:10,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:10,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:10,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:29:10,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:10,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 18:29:10,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:29:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:29:10,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:10,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 18:29:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:10,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:10,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:10,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:10,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:29:10,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:10,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-12 18:29:10,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:29:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:29:10,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 18:29:10,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147925934] [2020-10-12 18:29:10,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:10,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 18:29:10,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173905523] [2020-10-12 18:29:10,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 18:29:10,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:10,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 18:29:10,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:29:10,665 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-12 18:29:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:11,483 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-12 18:29:11,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 18:29:11,484 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-12 18:29:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:11,486 INFO L225 Difference]: With dead ends: 136 [2020-10-12 18:29:11,486 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 18:29:11,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 18:29:11,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 18:29:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-12 18:29:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 18:29:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-12 18:29:11,492 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-12 18:29:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:11,493 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-12 18:29:11,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 18:29:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-12 18:29:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 18:29:11,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:11,494 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:11,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 18:29:11,495 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:11,495 INFO L82 PathProgramCache]: Analyzing trace with hash 465899739, now seen corresponding path program 24 times [2020-10-12 18:29:11,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:11,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268975745] [2020-10-12 18:29:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:11,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:16,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:16,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 18:29:16,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 18:29:16,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:29:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:29:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:16,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:16,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:16,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:16,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:16,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:16,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:16,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:16,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:16,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:29:16,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-12 18:29:16,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:29:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:29:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:17,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 18:29:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:17,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:17,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:29:17,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-12 18:29:17,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:29:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:29:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:17,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 18:29:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:17,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:17,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:29:17,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:17,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 18:29:17,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:29:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:29:17,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 18:29:17,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268975745] [2020-10-12 18:29:17,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:17,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 18:29:17,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798116396] [2020-10-12 18:29:17,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 18:29:17,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:17,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 18:29:17,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 18:29:17,872 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-12 18:29:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:18,759 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-12 18:29:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 18:29:18,759 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-12 18:29:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:18,761 INFO L225 Difference]: With dead ends: 140 [2020-10-12 18:29:18,761 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 18:29:18,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 18:29:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 18:29:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-12 18:29:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 18:29:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-12 18:29:18,768 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-12 18:29:18,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:18,768 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-12 18:29:18,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 18:29:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-12 18:29:18,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 18:29:18,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:18,770 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:18,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 18:29:18,770 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:18,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:18,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1233217625, now seen corresponding path program 25 times [2020-10-12 18:29:18,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:18,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716031538] [2020-10-12 18:29:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:18,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:23,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:23,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 18:29:23,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:29:23,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:29:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:29:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:23,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:23,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:23,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:23,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:23,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:23,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:23,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:23,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:24,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:24,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:29:24,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:24,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-12 18:29:24,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:29:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:29:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:24,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 18:29:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:24,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:24,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:24,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:24,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:29:24,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:24,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-12 18:29:24,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:29:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:29:24,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:24,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 18:29:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:25,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:25,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:29:25,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-12 18:29:25,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:29:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:29:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-12 18:29:25,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716031538] [2020-10-12 18:29:25,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:25,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 18:29:25,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760490136] [2020-10-12 18:29:25,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 18:29:25,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:25,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 18:29:25,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:29:25,060 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-12 18:29:25,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:25,986 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-12 18:29:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 18:29:25,986 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-12 18:29:25,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:25,987 INFO L225 Difference]: With dead ends: 144 [2020-10-12 18:29:25,988 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 18:29:25,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 18:29:25,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 18:29:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-12 18:29:25,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 18:29:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-12 18:29:25,994 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-12 18:29:25,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:25,995 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-12 18:29:25,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 18:29:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-12 18:29:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 18:29:25,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:25,996 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:25,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 18:29:25,996 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:25,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:25,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1730406743, now seen corresponding path program 26 times [2020-10-12 18:29:25,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:25,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588564149] [2020-10-12 18:29:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:26,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:26,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:31,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:31,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 18:29:31,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:31,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 18:29:31,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:31,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:29:31,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-12 18:29:31,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:29:31,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:31,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:31,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:31,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:31,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:31,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:31,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:31,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:31,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:31,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:31,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:29:31,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-12 18:29:31,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:29:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:29:31,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:31,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 18:29:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:32,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:32,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:29:32,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:32,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-12 18:29:32,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:29:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:29:32,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 18:29:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:32,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:32,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:29:32,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:32,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-12 18:29:32,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:29:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:29:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-12 18:29:32,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588564149] [2020-10-12 18:29:32,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:32,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 18:29:32,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841033755] [2020-10-12 18:29:32,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 18:29:32,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:32,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 18:29:32,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 18:29:32,452 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-12 18:29:33,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:33,441 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-12 18:29:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 18:29:33,443 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-12 18:29:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:33,444 INFO L225 Difference]: With dead ends: 148 [2020-10-12 18:29:33,444 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 18:29:33,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 18:29:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 18:29:33,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 18:29:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 18:29:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-12 18:29:33,456 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-12 18:29:33,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:33,456 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-12 18:29:33,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 18:29:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-12 18:29:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 18:29:33,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:33,458 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:33,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 18:29:33,458 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:33,459 INFO L82 PathProgramCache]: Analyzing trace with hash -198249515, now seen corresponding path program 27 times [2020-10-12 18:29:33,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:33,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025255274] [2020-10-12 18:29:33,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:33,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:33,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:38,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:38,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 18:29:38,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:38,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 18:29:38,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:29:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 18:29:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:29:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:38,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:38,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:38,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:38,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:38,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:38,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:38,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:38,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:38,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:38,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:38,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:38,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:38,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:29:38,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-12 18:29:38,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:29:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:29:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:39,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 18:29:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:39,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:39,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:29:39,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-12 18:29:39,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:29:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:29:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:39,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 18:29:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:39,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:39,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:39,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:29:39,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-12 18:29:39,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:29:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:29:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-12 18:29:40,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025255274] [2020-10-12 18:29:40,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:40,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 18:29:40,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074410749] [2020-10-12 18:29:40,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 18:29:40,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:40,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 18:29:40,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:29:40,031 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-12 18:29:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:41,016 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-12 18:29:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 18:29:41,016 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-12 18:29:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:41,017 INFO L225 Difference]: With dead ends: 152 [2020-10-12 18:29:41,018 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 18:29:41,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 18:29:41,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 18:29:41,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-12 18:29:41,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 18:29:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-12 18:29:41,025 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-12 18:29:41,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:41,025 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-12 18:29:41,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 18:29:41,026 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-12 18:29:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 18:29:41,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:41,027 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:41,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 18:29:41,027 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:41,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:41,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1724061741, now seen corresponding path program 28 times [2020-10-12 18:29:41,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:41,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421232620] [2020-10-12 18:29:41,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:41,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:41,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:46,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:46,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 18:29:46,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 18:29:46,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:29:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:29:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:46,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:46,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:46,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:46,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:46,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:46,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:46,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:46,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:46,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 18:29:46,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:46,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-12 18:29:46,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:29:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:29:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:46,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:29:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:46,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:47,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:47,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 18:29:47,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-12 18:29:47,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:47,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:29:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:29:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 18:29:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:47,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:47,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:47,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 18:29:47,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-12 18:29:47,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:29:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:29:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-12 18:29:47,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421232620] [2020-10-12 18:29:47,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:47,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 18:29:47,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108060218] [2020-10-12 18:29:47,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 18:29:47,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:47,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 18:29:47,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 18:29:47,642 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-12 18:29:48,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:48,744 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-12 18:29:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 18:29:48,745 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-12 18:29:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:48,746 INFO L225 Difference]: With dead ends: 156 [2020-10-12 18:29:48,746 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 18:29:48,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 18:29:48,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 18:29:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-12 18:29:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 18:29:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-12 18:29:48,757 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-12 18:29:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:48,758 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-12 18:29:48,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 18:29:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-12 18:29:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-12 18:29:48,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:48,759 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:48,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 18:29:48,760 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:48,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:48,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1040196945, now seen corresponding path program 29 times [2020-10-12 18:29:48,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:48,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763023294] [2020-10-12 18:29:48,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:53,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 18:29:53,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:29:53,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 18:29:53,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:29:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:29:53,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:29:53,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:53,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:53,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:53,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:54,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:54,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:29:54,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:54,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-12 18:29:54,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:29:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:29:54,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:54,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 18:29:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:55,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:55,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:29:55,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-12 18:29:55,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:29:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:29:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:55,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 18:29:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:55,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:55,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:29:55,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:55,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-12 18:29:55,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:29:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:29:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-12 18:29:55,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763023294] [2020-10-12 18:29:55,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:55,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 18:29:55,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957726961] [2020-10-12 18:29:55,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 18:29:55,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:55,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 18:29:55,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:29:55,418 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-12 18:29:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:56,573 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-12 18:29:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 18:29:56,573 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-12 18:29:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:56,575 INFO L225 Difference]: With dead ends: 160 [2020-10-12 18:29:56,575 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 18:29:56,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 18:29:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 18:29:56,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-12 18:29:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 18:29:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-12 18:29:56,582 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-12 18:29:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:56,582 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-12 18:29:56,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 18:29:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-12 18:29:56,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 18:29:56,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:56,583 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:56,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 18:29:56,584 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:56,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:56,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1622995889, now seen corresponding path program 30 times [2020-10-12 18:29:56,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:56,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204889226] [2020-10-12 18:29:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:01,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:01,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 18:30:01,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 18:30:01,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:30:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 18:30:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:30:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:01,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:01,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:01,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:01,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:01,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:01,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:01,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:01,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:02,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:02,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:30:02,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:02,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-12 18:30:02,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:30:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:30:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 18:30:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:03,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:03,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:30:03,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-12 18:30:03,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:30:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:30:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:03,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 18:30:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:03,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:03,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:03,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:03,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:30:03,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-12 18:30:03,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:30:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:30:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 18:30:03,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204889226] [2020-10-12 18:30:03,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:03,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 18:30:03,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916327485] [2020-10-12 18:30:03,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 18:30:03,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:03,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 18:30:03,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 18:30:03,626 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-12 18:30:04,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:04,847 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-12 18:30:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 18:30:04,848 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-12 18:30:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:04,849 INFO L225 Difference]: With dead ends: 164 [2020-10-12 18:30:04,849 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 18:30:04,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 18:30:04,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 18:30:04,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-12 18:30:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 18:30:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-12 18:30:04,856 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-12 18:30:04,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:04,856 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-12 18:30:04,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 18:30:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-12 18:30:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 18:30:04,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:04,858 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:04,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 18:30:04,858 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:04,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:04,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1692925133, now seen corresponding path program 31 times [2020-10-12 18:30:04,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:04,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951933169] [2020-10-12 18:30:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:04,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:05,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:09,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:09,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 18:30:09,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:09,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 18:30:09,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:30:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 18:30:09,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:09,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:09,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:09,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:09,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:09,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:09,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:09,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:09,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:10,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:10,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 18:30:10,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-12 18:30:10,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:30:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 18:30:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:10,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 18:30:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:10,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:11,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:11,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 18:30:11,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:11,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-12 18:30:11,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:11,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:30:11,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:11,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 18:30:11,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:11,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 18:30:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:11,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:11,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:11,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:11,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 18:30:11,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:11,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-12 18:30:11,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:11,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:30:11,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:11,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 18:30:11,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-12 18:30:11,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951933169] [2020-10-12 18:30:11,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:11,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 18:30:11,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744278107] [2020-10-12 18:30:11,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 18:30:11,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:11,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 18:30:11,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:30:11,733 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-12 18:30:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:12,985 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-12 18:30:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 18:30:12,985 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-12 18:30:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:12,986 INFO L225 Difference]: With dead ends: 168 [2020-10-12 18:30:12,987 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 18:30:12,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-12 18:30:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 18:30:12,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-12 18:30:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 18:30:12,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-12 18:30:12,994 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-12 18:30:12,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:12,994 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-12 18:30:12,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 18:30:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-12 18:30:12,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 18:30:12,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:12,996 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:12,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 18:30:12,997 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:12,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:12,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1209444661, now seen corresponding path program 32 times [2020-10-12 18:30:12,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:12,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143631555] [2020-10-12 18:30:12,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:13,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:13,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:18,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:18,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 18:30:18,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:18,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:30:18,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:30:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:30:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:18,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:18,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:18,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:18,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:18,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:18,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:30:18,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-12 18:30:18,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:30:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:30:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:19,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 18:30:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:19,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:19,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:19,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:30:19,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-12 18:30:19,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:30:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:30:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 18:30:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:19,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:19,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:19,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:30:19,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:19,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-12 18:30:19,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:30:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:30:19,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-12 18:30:19,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143631555] [2020-10-12 18:30:19,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:19,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 18:30:19,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494600814] [2020-10-12 18:30:19,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 18:30:19,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:19,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 18:30:19,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 18:30:19,948 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-12 18:30:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:21,216 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-12 18:30:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 18:30:21,216 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-12 18:30:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:21,218 INFO L225 Difference]: With dead ends: 172 [2020-10-12 18:30:21,218 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 18:30:21,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 18:30:21,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 18:30:21,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-12 18:30:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 18:30:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-12 18:30:21,226 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-12 18:30:21,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:21,227 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-12 18:30:21,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 18:30:21,227 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-12 18:30:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 18:30:21,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:21,229 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:21,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 18:30:21,229 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:21,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:21,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1482259017, now seen corresponding path program 33 times [2020-10-12 18:30:21,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:21,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873558249] [2020-10-12 18:30:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:21,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:26,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:26,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 18:30:26,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:26,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 18:30:26,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 18:30:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 18:30:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:30:26,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:26,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:26,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:26,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:26,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:26,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:26,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:26,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:26,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:26,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:26,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:30:26,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-12 18:30:26,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:26,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 18:30:26,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:26,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:30:26,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 18:30:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:27,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:30:27,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-12 18:30:27,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 18:30:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:30:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:27,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 18:30:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:30:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-12 18:30:28,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 18:30:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:30:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-12 18:30:28,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873558249] [2020-10-12 18:30:28,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:28,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 18:30:28,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924309407] [2020-10-12 18:30:28,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 18:30:28,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:28,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 18:30:28,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:30:28,324 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-12 18:30:29,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:29,665 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-12 18:30:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 18:30:29,669 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-12 18:30:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:29,670 INFO L225 Difference]: With dead ends: 176 [2020-10-12 18:30:29,670 INFO L226 Difference]: Without dead ends: 94 [2020-10-12 18:30:29,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 18:30:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-12 18:30:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-12 18:30:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-12 18:30:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-12 18:30:29,679 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-12 18:30:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:29,680 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-12 18:30:29,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 18:30:29,680 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-12 18:30:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-12 18:30:29,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:29,681 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:29,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 18:30:29,682 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:29,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:29,682 INFO L82 PathProgramCache]: Analyzing trace with hash 862111559, now seen corresponding path program 34 times [2020-10-12 18:30:29,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:29,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621727100] [2020-10-12 18:30:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:34,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:34,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 18:30:34,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:34,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-12 18:30:34,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 18:30:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:30:34,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:34,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:34,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:34,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:34,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:34,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:34,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:34,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:34,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:34,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:34,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:35,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:35,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 18:30:35,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:35,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-12 18:30:35,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 18:30:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:30:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:36,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 18:30:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:36,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:36,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:36,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 18:30:36,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:36,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-12 18:30:36,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:36,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 18:30:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:30:36,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:36,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-12 18:30:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:36,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:36,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 18:30:36,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:36,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-12 18:30:36,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:36,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 18:30:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:30:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-12 18:30:36,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621727100] [2020-10-12 18:30:36,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:36,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 18:30:36,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527222793] [2020-10-12 18:30:36,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 18:30:36,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:36,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 18:30:36,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 18:30:36,989 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states. [2020-10-12 18:30:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:38,436 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-10-12 18:30:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 18:30:38,437 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-12 18:30:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:38,438 INFO L225 Difference]: With dead ends: 180 [2020-10-12 18:30:38,438 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 18:30:38,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2020-10-12 18:30:38,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 18:30:38,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-12 18:30:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 18:30:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-12 18:30:38,444 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 236 [2020-10-12 18:30:38,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:38,445 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-12 18:30:38,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-12 18:30:38,445 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-12 18:30:38,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 18:30:38,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:38,446 INFO L422 BasicCegarLoop]: trace histogram [105, 105, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:38,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 18:30:38,446 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash 2034736581, now seen corresponding path program 35 times [2020-10-12 18:30:38,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:38,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633910458] [2020-10-12 18:30:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:38,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:38,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:43,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:43,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 18:30:43,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:30:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 18:30:43,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:30:43,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:43,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 18:30:43,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:43,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:43,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:43,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:43,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:43,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:43,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:43,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:43,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:43,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:43,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:43,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:43,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:43,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:30:43,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-12 18:30:43,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:30:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 18:30:43,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:44,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 18:30:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:44,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:45,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:45,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:30:45,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:45,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-12 18:30:45,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:30:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:45,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 18:30:45,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:45,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-12 18:30:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:45,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:45,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:45,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:45,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:30:45,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:45,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-12 18:30:45,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:30:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 18:30:45,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-12 18:30:45,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633910458] [2020-10-12 18:30:45,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:45,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 18:30:45,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104198309] [2020-10-12 18:30:45,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 18:30:45,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:45,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 18:30:45,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:30:45,881 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 39 states. [2020-10-12 18:30:47,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:47,360 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2020-10-12 18:30:47,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 18:30:47,361 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 242 [2020-10-12 18:30:47,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:47,362 INFO L225 Difference]: With dead ends: 184 [2020-10-12 18:30:47,362 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 18:30:47,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2020-10-12 18:30:47,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 18:30:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-12 18:30:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 18:30:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-12 18:30:47,372 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 242 [2020-10-12 18:30:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:47,372 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-12 18:30:47,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 18:30:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-12 18:30:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 18:30:47,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:47,373 INFO L422 BasicCegarLoop]: trace histogram [108, 108, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:47,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 18:30:47,374 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:47,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:47,374 INFO L82 PathProgramCache]: Analyzing trace with hash 862084547, now seen corresponding path program 36 times [2020-10-12 18:30:47,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:47,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663670971] [2020-10-12 18:30:47,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking...