/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/sep60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:41:22,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:41:22,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:41:22,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:41:22,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:41:22,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:41:22,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:41:22,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:41:22,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:41:22,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:41:22,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:41:22,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:41:22,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:41:22,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:41:22,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:41:22,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:41:22,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:41:22,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:41:22,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:41:22,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:41:22,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:41:22,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:41:22,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:41:22,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:41:22,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:41:22,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:41:22,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:41:22,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:41:22,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:41:22,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:41:22,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:41:22,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:41:22,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:41:22,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:41:22,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:41:22,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:41:22,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:41:22,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:41:22,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:41:22,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:41:22,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:41:22,534 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 [2020-10-14 07:41:22,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:41:22,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:41:22,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:41:22,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:41:22,577 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:41:22,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:41:22,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:41:22,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:41:22,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:41:22,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:41:22,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:41:22,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:41:22,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:41:22,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:41:22,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:41:22,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:41:22,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:41:22,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:41:22,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:41:22,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:41:22,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:41:22,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:41:22,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:41:22,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:41:22,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:41:22,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:41:22,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:41:22,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:41:22,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:41:22,582 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 07:41:22,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:41:22,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:41:22,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:41:22,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:41:22,915 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:41:22,916 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-14 07:41:22,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7400322c/ff5fc13317e44fb5b473f996644d0c13/FLAGd237e0e31 [2020-10-14 07:41:23,394 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:41:23,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-14 07:41:23,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7400322c/ff5fc13317e44fb5b473f996644d0c13/FLAGd237e0e31 [2020-10-14 07:41:23,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7400322c/ff5fc13317e44fb5b473f996644d0c13 [2020-10-14 07:41:23,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:41:23,837 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:41:23,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:41:23,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:41:23,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:41:23,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:23,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78323104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23, skipping insertion in model container [2020-10-14 07:41:23,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:23,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:41:23,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:41:24,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:41:24,157 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:41:24,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:41:24,283 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:41:24,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:24 WrapperNode [2020-10-14 07:41:24,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:41:24,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:41:24,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:41:24,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:41:24,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:24" (1/1) ... [2020-10-14 07:41:24,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:24" (1/1) ... [2020-10-14 07:41:24,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:24" (1/1) ... [2020-10-14 07:41:24,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:24" (1/1) ... [2020-10-14 07:41:24,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:24" (1/1) ... [2020-10-14 07:41:24,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:24" (1/1) ... [2020-10-14 07:41:24,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:24" (1/1) ... [2020-10-14 07:41:24,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:41:24,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:41:24,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:41:24,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:41:24,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:24" (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 [2020-10-14 07:41:24,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:41:24,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:41:24,415 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-14 07:41:24,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:41:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:41:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:41:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-14 07:41:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 07:41:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:41:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 07:41:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 07:41:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 07:41:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:41:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:41:24,769 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:41:24,770 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 07:41:24,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:41:24 BoogieIcfgContainer [2020-10-14 07:41:24,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:41:24,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:41:24,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:41:24,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:41:24,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:41:23" (1/3) ... [2020-10-14 07:41:24,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2316fe21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:41:24, skipping insertion in model container [2020-10-14 07:41:24,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:24" (2/3) ... [2020-10-14 07:41:24,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2316fe21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:41:24, skipping insertion in model container [2020-10-14 07:41:24,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:41:24" (3/3) ... [2020-10-14 07:41:24,782 INFO L109 eAbstractionObserver]: Analyzing ICFG sep60-2.i [2020-10-14 07:41:24,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:41:24,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:41:24,811 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:41:24,833 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:41:24,833 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:41:24,833 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:41:24,834 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:41:24,834 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:41:24,834 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:41:24,834 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:41:24,835 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:41:24,854 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-14 07:41:24,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:41:24,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:24,862 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] [2020-10-14 07:41:24,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:24,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:24,868 INFO L82 PathProgramCache]: Analyzing trace with hash 794343521, now seen corresponding path program 1 times [2020-10-14 07:41:24,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:24,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599879101] [2020-10-14 07:41:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:26,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:41:26,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:26,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-10-14 07:41:26,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:26,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:41:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:26,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:41:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:26,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:26,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:26,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:26,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:41:26,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:26,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:41:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:26,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:26,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:26,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:26,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:41:26,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:26,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:41:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:26,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:26,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:41:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:26,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:26,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:41:26,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:26,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:41:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:41:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:26,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:26,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:41:26,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:26,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:41:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:41:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 07:41:26,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599879101] [2020-10-14 07:41:26,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:26,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-14 07:41:26,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438870860] [2020-10-14 07:41:26,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:41:26,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:26,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:41:26,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:41:26,339 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-14 07:41:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:26,498 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2020-10-14 07:41:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:41:26,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 07:41:26,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:26,514 INFO L225 Difference]: With dead ends: 56 [2020-10-14 07:41:26,515 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 07:41:26,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:41:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 07:41:26,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-14 07:41:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 07:41:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-10-14 07:41:26,604 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 32 [2020-10-14 07:41:26,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:26,604 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-10-14 07:41:26,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:41:26,605 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-10-14 07:41:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:41:26,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:26,611 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] [2020-10-14 07:41:26,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:41:26,613 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:26,613 INFO L82 PathProgramCache]: Analyzing trace with hash 2140793590, now seen corresponding path program 1 times [2020-10-14 07:41:26,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:26,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006598879] [2020-10-14 07:41:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:28,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:41:28,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-10-14 07:41:28,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:28,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:41:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:28,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:28,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:28,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:28,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:41:28,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:28,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:28,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:41:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:28,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:28,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:28,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:41:28,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:28,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:28,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:41:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:28,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:28,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:41:28,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:28,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:41:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:28,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:28,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:28,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:41:28,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:28,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:41:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:28,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 07:41:28,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006598879] [2020-10-14 07:41:28,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:28,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 07:41:28,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115434394] [2020-10-14 07:41:28,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:41:28,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:28,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:41:28,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:28,279 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 4 states. [2020-10-14 07:41:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:28,431 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-10-14 07:41:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:41:28,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 07:41:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:28,434 INFO L225 Difference]: With dead ends: 48 [2020-10-14 07:41:28,434 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 07:41:28,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:41:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 07:41:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-14 07:41:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:41:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-14 07:41:28,455 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2020-10-14 07:41:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:28,457 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-14 07:41:28,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:41:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-14 07:41:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 07:41:28,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:28,465 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:41:28,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:41:28,466 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:28,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:28,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1533486879, now seen corresponding path program 1 times [2020-10-14 07:41:28,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:28,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466380193] [2020-10-14 07:41:28,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:28,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:33,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 07:41:33,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:33,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:41:33,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:33,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:33,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:33,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:33,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:41:33,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:33,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:41:33,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:41:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:33,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:33,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:41:33,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:33,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:33,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:41:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:33,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:41:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:33,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:33,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:33,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:41:33,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:33,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:41:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:33,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:41:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:33,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:33,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:33,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:41:33,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:33,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:41:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-14 07:41:33,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466380193] [2020-10-14 07:41:33,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:41:33,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:41:33,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651491331] [2020-10-14 07:41:33,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:41:33,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:33,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:41:33,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:33,697 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-14 07:41:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:33,807 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-10-14 07:41:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:41:33,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 07:41:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:33,809 INFO L225 Difference]: With dead ends: 50 [2020-10-14 07:41:33,809 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 07:41:33,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 07:41:33,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 07:41:33,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 07:41:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-14 07:41:33,824 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 41 [2020-10-14 07:41:33,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:33,824 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-14 07:41:33,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:41:33,825 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-14 07:41:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 07:41:33,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:33,829 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 07:41:33,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:41:33,830 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:33,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1279819331, now seen corresponding path program 1 times [2020-10-14 07:41:33,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:33,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130521702] [2020-10-14 07:41:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:36,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:38,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:38,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:41:38,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:38,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:41:38,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:38,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 07:41:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:38,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:38,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:38,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:38,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:38,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:38,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:41:38,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:38,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:38,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:41:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:38,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:38,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:38,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:38,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:38,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 07:41:38,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:38,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:38,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:41:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:38,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:38,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:38,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:38,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 07:41:38,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:38,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:38,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:41:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:38,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:39,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:39,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:41:39,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:39,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:41:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 07:41:39,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130521702] [2020-10-14 07:41:39,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:41:39,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:41:39,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705889460] [2020-10-14 07:41:39,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:41:39,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:39,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:41:39,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:39,016 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-14 07:41:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:39,130 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-10-14 07:41:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:41:39,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-14 07:41:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:39,133 INFO L225 Difference]: With dead ends: 45 [2020-10-14 07:41:39,135 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 07:41:39,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 07:41:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-14 07:41:39,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 07:41:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-14 07:41:39,149 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 43 [2020-10-14 07:41:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:39,152 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-14 07:41:39,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:41:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-14 07:41:39,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 07:41:39,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:39,156 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1] [2020-10-14 07:41:39,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:41:39,156 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:39,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:39,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1550635457, now seen corresponding path program 1 times [2020-10-14 07:41:39,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:39,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448177718] [2020-10-14 07:41:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:44,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 07:41:44,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 07:41:44,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:44,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:41:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 07:41:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:41:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:44,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:44,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:44,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:44,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:44,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:44,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:41:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:44,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:44,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:44,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:41:44,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:44,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:44,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:44,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:44,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:44,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:44,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:41:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:44,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:44,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:44,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:44,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 07:41:44,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:44,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:41:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:41:44,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:41:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:44,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:44,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:44,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:44,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:41:44,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:44,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:41:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 07:41:44,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448177718] [2020-10-14 07:41:44,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:44,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:41:44,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248014399] [2020-10-14 07:41:44,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:41:44,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:44,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:41:44,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:41:44,330 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-14 07:41:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:44,464 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-14 07:41:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:41:44,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-14 07:41:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:44,466 INFO L225 Difference]: With dead ends: 55 [2020-10-14 07:41:44,466 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 07:41:44,468 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 [2020-10-14 07:41:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 07:41:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-14 07:41:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 07:41:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-14 07:41:44,487 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 45 [2020-10-14 07:41:44,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:44,487 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-14 07:41:44,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:41:44,488 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-14 07:41:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 07:41:44,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:44,491 INFO L422 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1] [2020-10-14 07:41:44,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:41:44,492 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:44,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:44,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1210696714, now seen corresponding path program 2 times [2020-10-14 07:41:44,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:44,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925534322] [2020-10-14 07:41:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:44,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:49,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:49,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:41:49,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 07:41:49,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:49,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:41:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:41:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:41:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:49,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:49,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:49,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:49,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:49,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:49,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:49,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:49,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:41:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:49,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:41:49,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 07:41:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:49,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:49,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:41:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:49,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:41:49,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:41:49,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:49,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:49,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:41:49,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:49,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:41:49,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:49,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 07:41:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:49,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:49,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:41:49,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:41:49,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:49,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:41:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:49,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 07:41:49,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925534322] [2020-10-14 07:41:49,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:49,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:41:49,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174213340] [2020-10-14 07:41:49,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:41:49,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:49,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:41:49,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:41:49,775 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2020-10-14 07:41:49,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:49,979 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-14 07:41:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:41:49,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-14 07:41:49,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:49,981 INFO L225 Difference]: With dead ends: 61 [2020-10-14 07:41:49,981 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 07:41:49,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:41:49,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 07:41:49,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-14 07:41:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 07:41:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-14 07:41:49,988 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 54 [2020-10-14 07:41:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:49,989 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-14 07:41:49,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:41:49,989 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-14 07:41:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 07:41:49,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:49,990 INFO L422 BasicCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1] [2020-10-14 07:41:49,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:41:49,991 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:49,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:49,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1512036321, now seen corresponding path program 3 times [2020-10-14 07:41:49,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:49,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663252217] [2020-10-14 07:41:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:50,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 07:41:55,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:55,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 07:41:55,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:41:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 07:41:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:41:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:55,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:55,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:55,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:55,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:55,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:41:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:41:55,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 07:41:55,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:55,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:55,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:41:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:41:55,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:55,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 07:41:55,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:55,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 07:41:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:41:55,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:55,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 07:41:55,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:41:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-14 07:41:55,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663252217] [2020-10-14 07:41:55,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:55,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:41:55,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459553063] [2020-10-14 07:41:55,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:41:55,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:55,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:41:55,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:41:55,289 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 5 states. [2020-10-14 07:41:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:55,392 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2020-10-14 07:41:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:41:55,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-14 07:41:55,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:55,394 INFO L225 Difference]: With dead ends: 59 [2020-10-14 07:41:55,394 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 07:41:55,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:41:55,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 07:41:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-14 07:41:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 07:41:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-14 07:41:55,407 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 63 [2020-10-14 07:41:55,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:55,409 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-14 07:41:55,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:41:55,409 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-14 07:41:55,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 07:41:55,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:55,413 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:41:55,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:41:55,415 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:55,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:55,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1943941793, now seen corresponding path program 4 times [2020-10-14 07:41:55,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:55,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632440878] [2020-10-14 07:41:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:00,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:00,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 07:42:00,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:00,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 07:42:00,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:00,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:42:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 07:42:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:42:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:42:00,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:00,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:00,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:00,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:42:00,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:00,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:00,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:00,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:00,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:42:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:00,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:00,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:00,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:00,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:00,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:00,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 07:42:00,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:00,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:00,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:00,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:42:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:00,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:00,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:00,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:00,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 07:42:00,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:00,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:00,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:00,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:00,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:00,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 07:42:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:00,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:00,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:00,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:00,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:00,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 07:42:00,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:00,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:00,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:42:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:00,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-14 07:42:00,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632440878] [2020-10-14 07:42:00,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:00,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:42:00,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008479292] [2020-10-14 07:42:00,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:42:00,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:00,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:42:00,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:00,803 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 6 states. [2020-10-14 07:42:00,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:00,953 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-10-14 07:42:00,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:42:00,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-14 07:42:00,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:00,958 INFO L225 Difference]: With dead ends: 61 [2020-10-14 07:42:00,958 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 07:42:00,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 07:42:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-14 07:42:00,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 07:42:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-14 07:42:00,975 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 65 [2020-10-14 07:42:00,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:00,976 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-14 07:42:00,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:42:00,976 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-14 07:42:00,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 07:42:00,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:00,980 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2020-10-14 07:42:00,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:42:00,983 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:00,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1165777757, now seen corresponding path program 5 times [2020-10-14 07:42:00,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:00,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373398429] [2020-10-14 07:42:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:06,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 07:42:06,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:42:06,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:06,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:42:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:42:06,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:06,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:06,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:06,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:06,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:06,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:06,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:06,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:06,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:42:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:06,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:06,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 07:42:06,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:06,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:42:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:42:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:06,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:06,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 07:42:06,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:06,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:42:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:06,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:42:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:06,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:06,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:06,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:06,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 07:42:06,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:06,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:42:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 07:42:06,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373398429] [2020-10-14 07:42:06,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:06,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:42:06,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321726784] [2020-10-14 07:42:06,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:42:06,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:06,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:42:06,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:42:06,244 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 5 states. [2020-10-14 07:42:06,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:06,340 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-10-14 07:42:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:42:06,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-14 07:42:06,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:06,342 INFO L225 Difference]: With dead ends: 74 [2020-10-14 07:42:06,342 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 07:42:06,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:42:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 07:42:06,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-14 07:42:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 07:42:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-14 07:42:06,352 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 67 [2020-10-14 07:42:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:06,353 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-14 07:42:06,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:42:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-14 07:42:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 07:42:06,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:06,354 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:06,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:42:06,355 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:06,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:06,355 INFO L82 PathProgramCache]: Analyzing trace with hash 784324033, now seen corresponding path program 6 times [2020-10-14 07:42:06,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:06,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490154074] [2020-10-14 07:42:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:11,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 07:42:11,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:11,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 07:42:11,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:11,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 07:42:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:42:11,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:11,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:11,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:11,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:11,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:11,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:42:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:11,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:11,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:11,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:11,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 07:42:11,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:11,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:42:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:11,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:42:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:11,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:11,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:42:11,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:11,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:42:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 07:42:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:11,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:11,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 07:42:11,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:11,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:42:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 07:42:11,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490154074] [2020-10-14 07:42:11,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:11,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:42:11,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937252910] [2020-10-14 07:42:11,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:42:11,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:11,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:42:11,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:11,649 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-10-14 07:42:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:11,825 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2020-10-14 07:42:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:42:11,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-14 07:42:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:11,828 INFO L225 Difference]: With dead ends: 77 [2020-10-14 07:42:11,828 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 07:42:11,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:42:11,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 07:42:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-14 07:42:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 07:42:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-14 07:42:11,838 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 69 [2020-10-14 07:42:11,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:11,839 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-14 07:42:11,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:42:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-14 07:42:11,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 07:42:11,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:11,840 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:11,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:42:11,841 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:11,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:11,843 INFO L82 PathProgramCache]: Analyzing trace with hash 147771316, now seen corresponding path program 7 times [2020-10-14 07:42:11,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:11,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123380392] [2020-10-14 07:42:11,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:16,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:16,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 07:42:16,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 07:42:16,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:16,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 07:42:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:42:16,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:16,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:16,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:16,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:16,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:16,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:16,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:16,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:42:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:16,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:17,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:17,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:17,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 07:42:17,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:17,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:17,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:17,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:17,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 07:42:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:17,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:17,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:17,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 07:42:17,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:17,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:17,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 07:42:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:17,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:17,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:17,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 07:42:17,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:17,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:17,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-14 07:42:17,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123380392] [2020-10-14 07:42:17,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:17,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:42:17,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047388714] [2020-10-14 07:42:17,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:42:17,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:17,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:42:17,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:17,224 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 7 states. [2020-10-14 07:42:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:17,322 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2020-10-14 07:42:17,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:42:17,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-14 07:42:17,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:17,323 INFO L225 Difference]: With dead ends: 71 [2020-10-14 07:42:17,323 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 07:42:17,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 07:42:17,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 07:42:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 07:42:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-14 07:42:17,337 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 78 [2020-10-14 07:42:17,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:17,338 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-14 07:42:17,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:42:17,341 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-14 07:42:17,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 07:42:17,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:17,342 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:17,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:42:17,342 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:17,343 INFO L82 PathProgramCache]: Analyzing trace with hash -857878030, now seen corresponding path program 8 times [2020-10-14 07:42:17,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:17,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971757089] [2020-10-14 07:42:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:22,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 07:42:22,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:22,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:42:22,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:22,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:22,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:42:22,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:22,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:42:22,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:22,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:22,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:22,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:22,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:22,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:22,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:22,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:42:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:22,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:22,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:22,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:22,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 07:42:22,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:22,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:22,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 07:42:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:22,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:22,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 07:42:22,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:22,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 07:42:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:22,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 07:42:22,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:22,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2020-10-14 07:42:22,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971757089] [2020-10-14 07:42:22,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:22,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:42:22,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002334641] [2020-10-14 07:42:22,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:42:22,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:22,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:42:22,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:22,611 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 6 states. [2020-10-14 07:42:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:22,697 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2020-10-14 07:42:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:42:22,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-14 07:42:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:22,698 INFO L225 Difference]: With dead ends: 86 [2020-10-14 07:42:22,698 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 07:42:22,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 07:42:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 07:42:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 07:42:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-14 07:42:22,705 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 80 [2020-10-14 07:42:22,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:22,705 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-14 07:42:22,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:42:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-14 07:42:22,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 07:42:22,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:22,706 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:22,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:42:22,706 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:22,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash 95871380, now seen corresponding path program 9 times [2020-10-14 07:42:22,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:22,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924237917] [2020-10-14 07:42:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:27,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:27,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 07:42:27,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:42:27,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:27,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:42:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:42:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:42:27,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:27,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:27,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:27,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:27,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:27,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:27,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:27,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:27,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:27,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:42:27,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:27,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:42:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:42:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:42:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:27,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:27,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:27,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:27,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:27,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:42:27,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:27,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 07:42:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:27,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:27,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:27,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:27,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 07:42:27,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:27,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:27,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:27,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:27,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:27,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-14 07:42:27,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924237917] [2020-10-14 07:42:27,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:27,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:42:27,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937084276] [2020-10-14 07:42:27,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:42:27,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:27,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:42:27,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:42:27,953 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 8 states. [2020-10-14 07:42:28,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:28,121 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2020-10-14 07:42:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:42:28,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-14 07:42:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:28,122 INFO L225 Difference]: With dead ends: 89 [2020-10-14 07:42:28,122 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 07:42:28,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:42:28,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 07:42:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-14 07:42:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 07:42:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-10-14 07:42:28,129 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 82 [2020-10-14 07:42:28,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:28,129 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-10-14 07:42:28,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:42:28,129 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-10-14 07:42:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 07:42:28,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:28,130 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:28,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 07:42:28,130 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:28,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:28,131 INFO L82 PathProgramCache]: Analyzing trace with hash -2059378623, now seen corresponding path program 10 times [2020-10-14 07:42:28,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:28,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025862220] [2020-10-14 07:42:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 07:42:33,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:33,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:42:33,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:42:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:42:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 07:42:33,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:33,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:33,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:33,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:33,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:33,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:33,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:33,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 07:42:33,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 07:42:33,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:42:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 07:42:33,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:33,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:42:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 07:42:33,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:33,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 07:42:33,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:42:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:33,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:33,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 07:42:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 07:42:33,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 07:42:33,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:33,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:42:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 07:42:33,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025862220] [2020-10-14 07:42:33,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:33,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:42:33,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274682038] [2020-10-14 07:42:33,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:42:33,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:33,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:42:33,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:33,658 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 9 states. [2020-10-14 07:42:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:33,868 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2020-10-14 07:42:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:42:33,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-14 07:42:33,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:33,869 INFO L225 Difference]: With dead ends: 95 [2020-10-14 07:42:33,869 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 07:42:33,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:42:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 07:42:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-14 07:42:33,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 07:42:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-14 07:42:33,884 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 91 [2020-10-14 07:42:33,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:33,885 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-14 07:42:33,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:42:33,885 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-14 07:42:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 07:42:33,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:33,886 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:33,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 07:42:33,886 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:33,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:33,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1369478196, now seen corresponding path program 11 times [2020-10-14 07:42:33,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:33,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431984378] [2020-10-14 07:42:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:38,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:38,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 07:42:38,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 07:42:38,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:38,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:42:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 07:42:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:42:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:38,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:38,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:38,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:38,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:38,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:38,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:38,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:38,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:39,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:39,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 07:42:39,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:39,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:39,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:42:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:39,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:39,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 07:42:39,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:39,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:39,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 07:42:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:39,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:39,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 07:42:39,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:39,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:39,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2020-10-14 07:42:39,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431984378] [2020-10-14 07:42:39,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:39,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:42:39,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319387596] [2020-10-14 07:42:39,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:42:39,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:39,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:42:39,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:42:39,474 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 8 states. [2020-10-14 07:42:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:39,591 INFO L93 Difference]: Finished difference Result 87 states and 104 transitions. [2020-10-14 07:42:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:42:39,591 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-14 07:42:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:39,592 INFO L225 Difference]: With dead ends: 87 [2020-10-14 07:42:39,592 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 07:42:39,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:42:39,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 07:42:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 07:42:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 07:42:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-14 07:42:39,597 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 100 [2020-10-14 07:42:39,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:39,597 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-14 07:42:39,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:42:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-14 07:42:39,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 07:42:39,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:39,599 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:39,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 07:42:39,600 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:39,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:39,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1580357618, now seen corresponding path program 12 times [2020-10-14 07:42:39,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:39,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995711009] [2020-10-14 07:42:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:44,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:44,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 07:42:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 07:42:44,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:44,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:42:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 07:42:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:42:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:44,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:44,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:44,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:44,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:44,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:44,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:44,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:44,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:44,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 07:42:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:44,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:44,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:42:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:44,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:44,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:44,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:44,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:44,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:44,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 07:42:44,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:44,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:44,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:44,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 07:42:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:44,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:44,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:45,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:45,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 07:42:45,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:45,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2020-10-14 07:42:45,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995711009] [2020-10-14 07:42:45,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:45,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:42:45,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805185132] [2020-10-14 07:42:45,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:42:45,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:45,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:42:45,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:45,026 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 9 states. [2020-10-14 07:42:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:45,152 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2020-10-14 07:42:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:42:45,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-14 07:42:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:45,154 INFO L225 Difference]: With dead ends: 89 [2020-10-14 07:42:45,154 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 07:42:45,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 07:42:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 07:42:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 07:42:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-14 07:42:45,160 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 102 [2020-10-14 07:42:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:45,160 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-14 07:42:45,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:42:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-14 07:42:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 07:42:45,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:45,162 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:45,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 07:42:45,162 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:45,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:45,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1922948048, now seen corresponding path program 13 times [2020-10-14 07:42:45,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:45,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796559011] [2020-10-14 07:42:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 07:42:50,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:50,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 07:42:50,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:42:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:50,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:50,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:50,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:50,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 07:42:50,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:42:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:50,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:50,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 07:42:50,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 07:42:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:50,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:50,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 07:42:50,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-10-14 07:42:50,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796559011] [2020-10-14 07:42:50,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:50,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:42:50,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741133311] [2020-10-14 07:42:50,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:42:50,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:50,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:42:50,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:50,527 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 7 states. [2020-10-14 07:42:50,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:50,623 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2020-10-14 07:42:50,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:42:50,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-14 07:42:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:50,624 INFO L225 Difference]: With dead ends: 108 [2020-10-14 07:42:50,625 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 07:42:50,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 07:42:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 07:42:50,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 07:42:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2020-10-14 07:42:50,631 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 104 [2020-10-14 07:42:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:50,631 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2020-10-14 07:42:50,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:42:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2020-10-14 07:42:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 07:42:50,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:50,632 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:50,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 07:42:50,633 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:50,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:50,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2041647662, now seen corresponding path program 14 times [2020-10-14 07:42:50,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:50,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135330011] [2020-10-14 07:42:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:55,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:55,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 07:42:55,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:55,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 07:42:55,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:55,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:42:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:42:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:42:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:55,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:55,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:55,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:55,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:55,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:55,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:55,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:55,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:42:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:55,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:55,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:55,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:55,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 07:42:55,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:55,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:42:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:42:55,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 07:42:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:55,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:55,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:55,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:55,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 07:42:55,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:55,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:55,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:55,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:55,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:55,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 07:42:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:55,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:55,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:55,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:55,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 07:42:55,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:55,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:55,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:55,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:55,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:55,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-14 07:42:56,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135330011] [2020-10-14 07:42:56,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:56,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:42:56,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317844287] [2020-10-14 07:42:56,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:42:56,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:56,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:42:56,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:42:56,011 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 10 states. [2020-10-14 07:42:56,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:56,254 INFO L93 Difference]: Finished difference Result 111 states and 135 transitions. [2020-10-14 07:42:56,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:42:56,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-10-14 07:42:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:56,256 INFO L225 Difference]: With dead ends: 111 [2020-10-14 07:42:56,256 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 07:42:56,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:42:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 07:42:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-14 07:42:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 07:42:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-14 07:42:56,262 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 106 [2020-10-14 07:42:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:56,262 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-14 07:42:56,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:42:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-14 07:42:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 07:42:56,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:56,263 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:56,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 07:42:56,264 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:56,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:56,264 INFO L82 PathProgramCache]: Analyzing trace with hash -402716477, now seen corresponding path program 15 times [2020-10-14 07:42:56,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:56,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954746335] [2020-10-14 07:42:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 07:43:01,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 07:43:01,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:43:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 07:43:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:43:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:01,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:01,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:01,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:01,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:01,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:01,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:43:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:01,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:01,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 07:43:01,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:01,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:01,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:01,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:43:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:01,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 07:43:01,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:01,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 07:43:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:01,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:01,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 07:43:01,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:43:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2020-10-14 07:43:01,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954746335] [2020-10-14 07:43:01,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:01,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:43:01,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63161812] [2020-10-14 07:43:01,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:43:01,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:01,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:43:01,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:43:01,747 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 10 states. [2020-10-14 07:43:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:01,855 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2020-10-14 07:43:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:43:01,855 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-10-14 07:43:01,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:01,856 INFO L225 Difference]: With dead ends: 99 [2020-10-14 07:43:01,857 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 07:43:01,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:43:01,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 07:43:01,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-10-14 07:43:01,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 07:43:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2020-10-14 07:43:01,862 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 115 [2020-10-14 07:43:01,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:01,862 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2020-10-14 07:43:01,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:43:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2020-10-14 07:43:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 07:43:01,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:01,864 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:01,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 07:43:01,864 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:01,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:01,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1685211323, now seen corresponding path program 16 times [2020-10-14 07:43:01,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:01,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430687308] [2020-10-14 07:43:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:06,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:06,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 07:43:06,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:43:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:06,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:06,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:06,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:06,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:06,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:06,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:06,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:06,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:06,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:06,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:06,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:43:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:06,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:07,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:07,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 07:43:07,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:07,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:43:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:43:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:07,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:07,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:07,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 07:43:07,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:07,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:43:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:07,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 07:43:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:07,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:07,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:07,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 07:43:07,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:07,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:07,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:07,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:43:07,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:07,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2020-10-14 07:43:07,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430687308] [2020-10-14 07:43:07,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:07,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:43:07,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364225118] [2020-10-14 07:43:07,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:43:07,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:07,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:43:07,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:43:07,314 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand 8 states. [2020-10-14 07:43:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:07,399 INFO L93 Difference]: Finished difference Result 120 states and 142 transitions. [2020-10-14 07:43:07,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:43:07,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-14 07:43:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:07,401 INFO L225 Difference]: With dead ends: 120 [2020-10-14 07:43:07,401 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 07:43:07,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:43:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 07:43:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-14 07:43:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 07:43:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-10-14 07:43:07,408 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 117 [2020-10-14 07:43:07,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:07,408 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-10-14 07:43:07,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:43:07,408 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-10-14 07:43:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 07:43:07,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:07,409 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:07,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 07:43:07,410 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:07,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1815534365, now seen corresponding path program 17 times [2020-10-14 07:43:07,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:07,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763126082] [2020-10-14 07:43:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:07,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:12,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 07:43:12,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:12,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 07:43:12,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:12,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:43:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 07:43:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:43:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:12,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:12,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:12,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:12,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:12,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:12,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:12,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:12,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:43:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:12,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:12,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:12,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 07:43:12,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:12,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 07:43:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:12,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:12,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:12,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 07:43:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:12,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:43:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:43:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:12,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 07:43:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:12,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:12,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:12,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 07:43:12,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:12,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:43:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 165 proven. 235 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2020-10-14 07:43:12,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763126082] [2020-10-14 07:43:12,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:12,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:43:12,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697665717] [2020-10-14 07:43:12,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:43:12,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:12,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:43:12,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:43:12,853 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 11 states. [2020-10-14 07:43:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:13,147 INFO L93 Difference]: Finished difference Result 123 states and 149 transitions. [2020-10-14 07:43:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:43:13,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 119 [2020-10-14 07:43:13,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:13,149 INFO L225 Difference]: With dead ends: 123 [2020-10-14 07:43:13,149 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 07:43:13,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:43:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 07:43:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-14 07:43:13,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 07:43:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2020-10-14 07:43:13,155 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 119 [2020-10-14 07:43:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:13,155 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2020-10-14 07:43:13,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:43:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2020-10-14 07:43:13,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 07:43:13,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:13,156 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:13,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 07:43:13,156 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:13,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:13,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1546729682, now seen corresponding path program 18 times [2020-10-14 07:43:13,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:13,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816968732] [2020-10-14 07:43:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:13,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:18,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 07:43:18,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:18,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:43:18,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:18,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:43:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 07:43:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:43:18,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:18,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:18,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:18,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:18,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:18,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:18,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:18,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:18,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:18,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:18,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:18,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:18,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:43:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:18,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:18,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:18,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:18,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 07:43:18,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:18,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:18,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:18,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:18,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:18,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:18,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 07:43:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:18,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:18,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:18,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 07:43:18,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:18,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:18,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 07:43:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:18,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:18,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:18,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 07:43:18,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:18,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:18,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:18,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:18,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:18,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2020-10-14 07:43:18,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816968732] [2020-10-14 07:43:18,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:18,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:43:18,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920458384] [2020-10-14 07:43:18,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:43:18,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:18,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:43:18,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:43:18,713 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand 11 states. [2020-10-14 07:43:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:18,847 INFO L93 Difference]: Finished difference Result 109 states and 130 transitions. [2020-10-14 07:43:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:43:18,850 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2020-10-14 07:43:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:18,851 INFO L225 Difference]: With dead ends: 109 [2020-10-14 07:43:18,851 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 07:43:18,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:43:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 07:43:18,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 07:43:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 07:43:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-10-14 07:43:18,858 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 128 [2020-10-14 07:43:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:18,858 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-10-14 07:43:18,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:43:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-10-14 07:43:18,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 07:43:18,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:18,860 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:18,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 07:43:18,860 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:18,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:18,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1568607888, now seen corresponding path program 19 times [2020-10-14 07:43:18,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:18,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638258619] [2020-10-14 07:43:18,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:18,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 07:43:23,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:43:23,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:43:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:43:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:23,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:23,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:23,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:23,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:23,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:23,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:43:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:23,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:24,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:24,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 07:43:24,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:24,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 07:43:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:24,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:24,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 07:43:24,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:24,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:24,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 07:43:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:24,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:24,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:24,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 07:43:24,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:24,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:24,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:24,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:24,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:24,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2020-10-14 07:43:24,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638258619] [2020-10-14 07:43:24,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:24,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:43:24,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556078294] [2020-10-14 07:43:24,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:43:24,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:24,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:43:24,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:43:24,371 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 9 states. [2020-10-14 07:43:24,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:24,474 INFO L93 Difference]: Finished difference Result 132 states and 156 transitions. [2020-10-14 07:43:24,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:43:24,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2020-10-14 07:43:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:24,475 INFO L225 Difference]: With dead ends: 132 [2020-10-14 07:43:24,476 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 07:43:24,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:43:24,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 07:43:24,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 07:43:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 07:43:24,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2020-10-14 07:43:24,482 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 130 [2020-10-14 07:43:24,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:24,482 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2020-10-14 07:43:24,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:43:24,483 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2020-10-14 07:43:24,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 07:43:24,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:24,484 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 8, 8, 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] [2020-10-14 07:43:24,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 07:43:24,484 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:24,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1293995598, now seen corresponding path program 20 times [2020-10-14 07:43:24,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:24,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073221243] [2020-10-14 07:43:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:29,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 07:43:29,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:43:29,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:29,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:43:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:43:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:43:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:29,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:29,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:29,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:29,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:29,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:29,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:29,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:29,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:29,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:43:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:29,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:29,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 07:43:29,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:29,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:43:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:43:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:29,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 07:43:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:29,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 07:43:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:29,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 07:43:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:30,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:30,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:30,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 07:43:30,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:30,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:30,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:30,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 0 proven. 516 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2020-10-14 07:43:30,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073221243] [2020-10-14 07:43:30,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:30,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:43:30,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986904454] [2020-10-14 07:43:30,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:43:30,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:30,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:43:30,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:43:30,039 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 12 states. [2020-10-14 07:43:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:30,343 INFO L93 Difference]: Finished difference Result 135 states and 163 transitions. [2020-10-14 07:43:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:43:30,343 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-10-14 07:43:30,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:30,344 INFO L225 Difference]: With dead ends: 135 [2020-10-14 07:43:30,344 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 07:43:30,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 07:43:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 07:43:30,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-14 07:43:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 07:43:30,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2020-10-14 07:43:30,351 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 132 [2020-10-14 07:43:30,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:30,351 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2020-10-14 07:43:30,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:43:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2020-10-14 07:43:30,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 07:43:30,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:30,353 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 8, 8, 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] [2020-10-14 07:43:30,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 07:43:30,353 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:30,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1311576093, now seen corresponding path program 21 times [2020-10-14 07:43:30,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:30,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868480425] [2020-10-14 07:43:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:35,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:35,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 07:43:35,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:43:35,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:35,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:43:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 07:43:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 07:43:35,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:35,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:35,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:35,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:43:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:35,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:35,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:35,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 07:43:35,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:35,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 07:43:35,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:35,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 07:43:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:35,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:35,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 07:43:35,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 07:43:35,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:35,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:43:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 07:43:35,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:35,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 07:43:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:35,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:35,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:35,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 07:43:35,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 07:43:35,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:35,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 07:43:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 265 proven. 382 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2020-10-14 07:43:35,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868480425] [2020-10-14 07:43:35,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:35,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:43:35,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347503923] [2020-10-14 07:43:35,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:43:35,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:35,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:43:35,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:43:35,992 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand 13 states. [2020-10-14 07:43:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:36,312 INFO L93 Difference]: Finished difference Result 141 states and 171 transitions. [2020-10-14 07:43:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:43:36,313 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 141 [2020-10-14 07:43:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:36,314 INFO L225 Difference]: With dead ends: 141 [2020-10-14 07:43:36,314 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 07:43:36,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 07:43:36,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 07:43:36,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-10-14 07:43:36,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 07:43:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-10-14 07:43:36,320 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 141 [2020-10-14 07:43:36,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:36,321 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-10-14 07:43:36,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:43:36,321 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-10-14 07:43:36,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 07:43:36,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:36,323 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 8, 8, 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] [2020-10-14 07:43:36,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 07:43:36,323 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:36,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:36,324 INFO L82 PathProgramCache]: Analyzing trace with hash 139758802, now seen corresponding path program 22 times [2020-10-14 07:43:36,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:36,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029909499] [2020-10-14 07:43:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:36,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:36,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:41,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:41,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 07:43:41,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:41,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 07:43:41,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:41,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:43:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 07:43:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:43:41,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:41,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:41,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:41,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:41,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:41,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:41,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:41,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:43:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:41,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:41,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:41,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:41,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 07:43:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:41,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:43:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:41,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:42,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:42,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:42,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:42,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 07:43:42,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:42,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:42,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:42,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 07:43:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:42,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:42,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:42,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:42,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:42,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:42,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 07:43:42,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:42,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2020-10-14 07:43:42,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029909499] [2020-10-14 07:43:42,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:42,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:43:42,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985915209] [2020-10-14 07:43:42,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:43:42,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:42,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:43:42,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:43:42,301 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 12 states. [2020-10-14 07:43:42,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:42,446 INFO L93 Difference]: Finished difference Result 125 states and 150 transitions. [2020-10-14 07:43:42,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:43:42,446 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 150 [2020-10-14 07:43:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:42,447 INFO L225 Difference]: With dead ends: 125 [2020-10-14 07:43:42,448 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 07:43:42,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:43:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 07:43:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 07:43:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 07:43:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2020-10-14 07:43:42,458 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 150 [2020-10-14 07:43:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:42,458 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2020-10-14 07:43:42,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:43:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2020-10-14 07:43:42,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 07:43:42,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:42,460 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 9, 9, 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] [2020-10-14 07:43:42,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 07:43:42,461 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:42,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:42,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1689846800, now seen corresponding path program 23 times [2020-10-14 07:43:42,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:42,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378780375] [2020-10-14 07:43:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:42,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:42,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:47,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:47,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 07:43:47,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 07:43:47,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:47,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:43:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 07:43:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:43:47,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:47,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:47,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:47,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:47,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:47,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:47,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:47,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:47,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:43:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:47,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:47,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:47,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 07:43:47,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:47,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:47,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:47,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:43:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:47,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:47,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:48,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:48,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:48,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:48,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 07:43:48,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:48,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:48,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:48,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:48,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:48,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 07:43:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:48,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:48,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:48,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:48,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 07:43:48,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:48,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2020-10-14 07:43:48,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378780375] [2020-10-14 07:43:48,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:48,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:43:48,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329719989] [2020-10-14 07:43:48,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:43:48,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:48,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:43:48,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:43:48,346 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand 13 states. [2020-10-14 07:43:48,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:48,503 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2020-10-14 07:43:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:43:48,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-10-14 07:43:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:48,505 INFO L225 Difference]: With dead ends: 127 [2020-10-14 07:43:48,505 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 07:43:48,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:43:48,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 07:43:48,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 07:43:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 07:43:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2020-10-14 07:43:48,512 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 152 [2020-10-14 07:43:48,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:48,512 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2020-10-14 07:43:48,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:43:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2020-10-14 07:43:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 07:43:48,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:48,514 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 10, 10, 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] [2020-10-14 07:43:48,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 07:43:48,514 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:48,515 INFO L82 PathProgramCache]: Analyzing trace with hash 970761166, now seen corresponding path program 24 times [2020-10-14 07:43:48,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:48,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693512775] [2020-10-14 07:43:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:53,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:53,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 07:43:53,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-14 07:43:53,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:53,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:43:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:43:53,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:53,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:53,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:53,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:53,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:53,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:53,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:53,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:43:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:53,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:53,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:53,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:53,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:53,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 07:43:53,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:53,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:43:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:54,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:54,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:54,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 07:43:54,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:54,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:54,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:54,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:54,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:54,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:54,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 07:43:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:54,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:54,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 07:43:54,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:54,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2020-10-14 07:43:54,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693512775] [2020-10-14 07:43:54,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:54,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:43:54,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782231777] [2020-10-14 07:43:54,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:43:54,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:54,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:43:54,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:43:54,394 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand 10 states. [2020-10-14 07:43:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:54,520 INFO L93 Difference]: Finished difference Result 154 states and 182 transitions. [2020-10-14 07:43:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:43:54,521 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-10-14 07:43:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:54,522 INFO L225 Difference]: With dead ends: 154 [2020-10-14 07:43:54,522 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 07:43:54,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:43:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 07:43:54,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 07:43:54,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 07:43:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-10-14 07:43:54,528 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 154 [2020-10-14 07:43:54,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:54,528 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-10-14 07:43:54,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:43:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-10-14 07:43:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 07:43:54,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:54,530 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:54,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 07:43:54,530 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:54,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:54,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1741815568, now seen corresponding path program 25 times [2020-10-14 07:43:54,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:54,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301060523] [2020-10-14 07:43:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:54,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:59,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:59,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 07:43:59,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 07:43:59,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:59,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:43:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 07:43:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:43:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:59,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:59,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:59,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:59,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:59,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:59,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:59,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:59,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:59,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:43:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:59,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:59,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:59,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:59,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 07:43:59,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:59,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:43:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:43:59,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:59,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 07:43:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:00,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:44:00,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 07:44:00,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:00,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:44:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:00,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 07:44:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:00,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:00,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:44:00,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 07:44:00,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:00,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:44:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2020-10-14 07:44:00,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301060523] [2020-10-14 07:44:00,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:00,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:44:00,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542712485] [2020-10-14 07:44:00,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:44:00,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:00,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:44:00,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:44:00,318 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 14 states. [2020-10-14 07:44:00,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:00,645 INFO L93 Difference]: Finished difference Result 157 states and 189 transitions. [2020-10-14 07:44:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:44:00,645 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 156 [2020-10-14 07:44:00,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:00,646 INFO L225 Difference]: With dead ends: 157 [2020-10-14 07:44:00,646 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 07:44:00,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-14 07:44:00,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 07:44:00,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-14 07:44:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 07:44:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2020-10-14 07:44:00,656 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 156 [2020-10-14 07:44:00,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:00,657 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2020-10-14 07:44:00,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:44:00,657 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2020-10-14 07:44:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 07:44:00,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:00,660 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:00,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 07:44:00,661 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:00,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:00,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1199426203, now seen corresponding path program 26 times [2020-10-14 07:44:00,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:00,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048276023] [2020-10-14 07:44:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:05,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:05,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 07:44:05,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:05,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 07:44:05,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:05,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:44:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 07:44:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:44:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:05,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:05,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:05,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:05,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:05,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:44:05,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:05,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:05,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:05,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:44:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:05,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:06,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:06,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 07:44:06,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:06,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:06,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 07:44:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:06,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:06,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:06,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-14 07:44:06,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:06,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:06,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 07:44:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:06,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:06,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:06,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 07:44:06,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:06,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:06,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2020-10-14 07:44:06,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048276023] [2020-10-14 07:44:06,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:06,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:44:06,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058631626] [2020-10-14 07:44:06,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:44:06,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:06,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:44:06,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:44:06,698 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand 14 states. [2020-10-14 07:44:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:06,868 INFO L93 Difference]: Finished difference Result 137 states and 164 transitions. [2020-10-14 07:44:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:44:06,869 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2020-10-14 07:44:06,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:06,870 INFO L225 Difference]: With dead ends: 137 [2020-10-14 07:44:06,870 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 07:44:06,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:44:06,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 07:44:06,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-14 07:44:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 07:44:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-10-14 07:44:06,876 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 165 [2020-10-14 07:44:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:06,877 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-10-14 07:44:06,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:44:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-10-14 07:44:06,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 07:44:06,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:06,878 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:06,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 07:44:06,879 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:06,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:06,879 INFO L82 PathProgramCache]: Analyzing trace with hash 155910247, now seen corresponding path program 27 times [2020-10-14 07:44:06,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:06,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665246168] [2020-10-14 07:44:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:06,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:11,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:11,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 07:44:11,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:11,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 07:44:11,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:11,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:44:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:44:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:44:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:11,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:11,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:11,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:11,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:11,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:11,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:44:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:11,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:12,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:12,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:12,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 07:44:12,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:12,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 07:44:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:12,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:12,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 07:44:12,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:12,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:12,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 07:44:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:12,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:12,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:12,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-14 07:44:12,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:12,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1868 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2020-10-14 07:44:12,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665246168] [2020-10-14 07:44:12,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:12,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:44:12,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796822123] [2020-10-14 07:44:12,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:44:12,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:12,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:44:12,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:44:12,858 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 11 states. [2020-10-14 07:44:12,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:12,964 INFO L93 Difference]: Finished difference Result 166 states and 196 transitions. [2020-10-14 07:44:12,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:44:12,965 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-10-14 07:44:12,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:12,966 INFO L225 Difference]: With dead ends: 166 [2020-10-14 07:44:12,966 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 07:44:12,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:44:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 07:44:12,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-14 07:44:12,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-14 07:44:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-10-14 07:44:12,973 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 167 [2020-10-14 07:44:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:12,973 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-10-14 07:44:12,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:44:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-10-14 07:44:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 07:44:12,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:12,974 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:12,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 07:44:12,975 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:12,975 INFO L82 PathProgramCache]: Analyzing trace with hash -934442363, now seen corresponding path program 28 times [2020-10-14 07:44:12,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:12,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799311665] [2020-10-14 07:44:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:13,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:13,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:18,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:18,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 07:44:18,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 07:44:18,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:18,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:44:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 07:44:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 07:44:18,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:18,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:18,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:18,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:18,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:18,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:18,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:18,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:44:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:18,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:18,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:18,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:18,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 07:44:18,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:18,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:44:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 07:44:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:18,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 07:44:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:18,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:18,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:18,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:18,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 07:44:18,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:18,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:18,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 07:44:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:18,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:18,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:18,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:18,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 07:44:18,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:18,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2020-10-14 07:44:18,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799311665] [2020-10-14 07:44:18,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:18,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:44:18,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197289271] [2020-10-14 07:44:18,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:44:18,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:18,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:44:18,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:44:18,998 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 15 states. [2020-10-14 07:44:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:19,418 INFO L93 Difference]: Finished difference Result 169 states and 203 transitions. [2020-10-14 07:44:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:44:19,418 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 169 [2020-10-14 07:44:19,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:19,419 INFO L225 Difference]: With dead ends: 169 [2020-10-14 07:44:19,419 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 07:44:19,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-14 07:44:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 07:44:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-14 07:44:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 07:44:19,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2020-10-14 07:44:19,431 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 169 [2020-10-14 07:44:19,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:19,431 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2020-10-14 07:44:19,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:44:19,431 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2020-10-14 07:44:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 07:44:19,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:19,434 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:19,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 07:44:19,434 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:19,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:19,435 INFO L82 PathProgramCache]: Analyzing trace with hash 665967472, now seen corresponding path program 29 times [2020-10-14 07:44:19,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:19,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052306895] [2020-10-14 07:44:19,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:19,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:24,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:24,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 07:44:24,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:24,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 07:44:24,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:24,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:24,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:24,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 07:44:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 07:44:24,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:24,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:24,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:24,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:24,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:24,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:24,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:24,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:44:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:24,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:24,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:24,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:24,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:44:24,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:24,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-14 07:44:24,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:24,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:24,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 07:44:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:25,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:25,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:44:25,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:25,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 07:44:25,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:25,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:25,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:25,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:25,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 07:44:25,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:25,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 07:44:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:25,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:25,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:44:25,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-14 07:44:25,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:25,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 07:44:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2198 backedges. 460 proven. 670 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2020-10-14 07:44:25,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052306895] [2020-10-14 07:44:25,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:25,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:44:25,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736215058] [2020-10-14 07:44:25,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:44:25,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:25,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:44:25,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:44:25,610 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand 16 states. [2020-10-14 07:44:26,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:26,041 INFO L93 Difference]: Finished difference Result 175 states and 211 transitions. [2020-10-14 07:44:26,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:44:26,041 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-10-14 07:44:26,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:26,042 INFO L225 Difference]: With dead ends: 175 [2020-10-14 07:44:26,042 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 07:44:26,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-14 07:44:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 07:44:26,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-14 07:44:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 07:44:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2020-10-14 07:44:26,049 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 178 [2020-10-14 07:44:26,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:26,050 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2020-10-14 07:44:26,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:44:26,050 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2020-10-14 07:44:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 07:44:26,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:26,051 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:26,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 07:44:26,052 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:26,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:26,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1860518683, now seen corresponding path program 30 times [2020-10-14 07:44:26,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:26,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741481430] [2020-10-14 07:44:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:26,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:31,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:31,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 07:44:31,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:31,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-14 07:44:31,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:31,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:44:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 07:44:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:44:31,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:31,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:31,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:31,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:31,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:31,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:31,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:31,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:31,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:44:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:31,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:31,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:31,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:31,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-14 07:44:31,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:31,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:31,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 07:44:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:31,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:32,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:32,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:32,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-14 07:44:32,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:32,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:32,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:32,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 07:44:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:32,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:32,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-14 07:44:32,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:32,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:32,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2419 trivial. 0 not checked. [2020-10-14 07:44:32,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741481430] [2020-10-14 07:44:32,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:32,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:44:32,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243604703] [2020-10-14 07:44:32,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:44:32,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:44:32,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:44:32,618 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand 15 states. [2020-10-14 07:44:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:32,790 INFO L93 Difference]: Finished difference Result 153 states and 184 transitions. [2020-10-14 07:44:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:44:32,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 187 [2020-10-14 07:44:32,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:32,792 INFO L225 Difference]: With dead ends: 153 [2020-10-14 07:44:32,792 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 07:44:32,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:44:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 07:44:32,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-10-14 07:44:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 07:44:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2020-10-14 07:44:32,799 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 187 [2020-10-14 07:44:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:32,799 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2020-10-14 07:44:32,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:44:32,799 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2020-10-14 07:44:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 07:44:32,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:32,801 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 12, 12, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:32,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 07:44:32,801 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:32,801 INFO L82 PathProgramCache]: Analyzing trace with hash -629033369, now seen corresponding path program 31 times [2020-10-14 07:44:32,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:32,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042099567] [2020-10-14 07:44:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:33,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:37,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:37,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 07:44:37,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 07:44:37,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:37,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 07:44:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:44:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:38,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:38,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:38,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:38,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:38,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:38,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:38,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:38,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:38,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:38,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:38,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:38,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:44:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:38,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:38,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:38,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:38,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:38,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-14 07:44:38,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:38,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:38,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 07:44:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:38,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:38,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:38,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:38,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:38,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-14 07:44:38,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:38,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:38,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:38,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:38,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:38,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 07:44:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:38,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:39,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:39,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:39,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-14 07:44:39,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:39,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:39,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:39,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:39,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2563 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2419 trivial. 0 not checked. [2020-10-14 07:44:39,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042099567] [2020-10-14 07:44:39,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:39,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:44:39,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264573899] [2020-10-14 07:44:39,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:44:39,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:39,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:44:39,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:44:39,280 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand 16 states. [2020-10-14 07:44:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:39,489 INFO L93 Difference]: Finished difference Result 155 states and 186 transitions. [2020-10-14 07:44:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:44:39,489 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 189 [2020-10-14 07:44:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:39,491 INFO L225 Difference]: With dead ends: 155 [2020-10-14 07:44:39,491 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 07:44:39,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:44:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 07:44:39,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2020-10-14 07:44:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 07:44:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2020-10-14 07:44:39,499 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 189 [2020-10-14 07:44:39,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:39,499 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2020-10-14 07:44:39,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:44:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2020-10-14 07:44:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 07:44:39,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:39,501 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:39,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 07:44:39,502 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:39,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:39,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1712346985, now seen corresponding path program 32 times [2020-10-14 07:44:39,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:39,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246717251] [2020-10-14 07:44:39,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:39,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:44,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:44,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 07:44:44,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 07:44:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:44,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:44:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:44:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:44:44,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:44,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:44,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:44,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:44,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:44,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:44,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:44,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:44,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:44,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:44:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:44,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:45,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:45,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-14 07:44:45,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:45,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 07:44:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:45,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:45,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-14 07:44:45,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:45,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 07:44:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:45,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:45,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:45,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-14 07:44:45,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2588 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2020-10-14 07:44:45,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246717251] [2020-10-14 07:44:45,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:45,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:44:45,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407606096] [2020-10-14 07:44:45,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:44:45,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:45,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:44:45,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:44:45,917 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand 12 states. [2020-10-14 07:44:46,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:46,018 INFO L93 Difference]: Finished difference Result 188 states and 222 transitions. [2020-10-14 07:44:46,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:44:46,019 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 191 [2020-10-14 07:44:46,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:46,019 INFO L225 Difference]: With dead ends: 188 [2020-10-14 07:44:46,020 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 07:44:46,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:44:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 07:44:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-10-14 07:44:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 07:44:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2020-10-14 07:44:46,026 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 191 [2020-10-14 07:44:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:46,026 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2020-10-14 07:44:46,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:44:46,026 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2020-10-14 07:44:46,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 07:44:46,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:46,027 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 13, 13, 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] [2020-10-14 07:44:46,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 07:44:46,028 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:46,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1178462087, now seen corresponding path program 33 times [2020-10-14 07:44:46,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:46,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77350603] [2020-10-14 07:44:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:46,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:46,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:46,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:47,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:51,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-14 07:44:51,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-14 07:44:51,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:51,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:44:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 07:44:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 07:44:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:51,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:51,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:51,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:51,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:44:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:51,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:51,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 07:44:51,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:51,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:44:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 07:44:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 07:44:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:51,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:52,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:52,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-14 07:44:52,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:52,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 07:44:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:52,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:52,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:52,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-14 07:44:52,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:52,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:52,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:52,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2605 backedges. 0 proven. 1321 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2020-10-14 07:44:52,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77350603] [2020-10-14 07:44:52,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:52,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:44:52,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155327455] [2020-10-14 07:44:52,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:44:52,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:52,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:44:52,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:44:52,441 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 17 states. [2020-10-14 07:44:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:52,863 INFO L93 Difference]: Finished difference Result 191 states and 229 transitions. [2020-10-14 07:44:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:44:52,863 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 193 [2020-10-14 07:44:52,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:52,864 INFO L225 Difference]: With dead ends: 191 [2020-10-14 07:44:52,864 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 07:44:52,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-14 07:44:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 07:44:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-14 07:44:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 07:44:52,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-10-14 07:44:52,873 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 193 [2020-10-14 07:44:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:52,873 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-10-14 07:44:52,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:44:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-10-14 07:44:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 07:44:52,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:52,875 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 13, 13, 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] [2020-10-14 07:44:52,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 07:44:52,876 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:52,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1040914002, now seen corresponding path program 34 times [2020-10-14 07:44:52,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:52,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007352843] [2020-10-14 07:44:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:57,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:57,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 07:44:57,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:57,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 07:44:57,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:57,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:44:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 07:44:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:44:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:58,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:58,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:58,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:58,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:58,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:58,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:58,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:44:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:58,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:58,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:44:58,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-14 07:44:58,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:58,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 07:44:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:58,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:59,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:44:59,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:59,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-14 07:44:59,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:59,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:59,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:59,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 07:44:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:59,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:59,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:44:59,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:59,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-14 07:44:59,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:59,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:59,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:44:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:59,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2974 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2020-10-14 07:44:59,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007352843] [2020-10-14 07:44:59,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:59,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:44:59,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936199610] [2020-10-14 07:44:59,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:44:59,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:59,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:44:59,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:44:59,539 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 17 states. [2020-10-14 07:44:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:59,673 INFO L93 Difference]: Finished difference Result 165 states and 198 transitions. [2020-10-14 07:44:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:44:59,674 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 202 [2020-10-14 07:44:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:59,675 INFO L225 Difference]: With dead ends: 165 [2020-10-14 07:44:59,675 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 07:44:59,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:44:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 07:44:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-14 07:44:59,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 07:44:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2020-10-14 07:44:59,682 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 202 [2020-10-14 07:44:59,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:59,682 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2020-10-14 07:44:59,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:44:59,683 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2020-10-14 07:44:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 07:44:59,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:59,684 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 14, 14, 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] [2020-10-14 07:44:59,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 07:44:59,685 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:59,685 INFO L82 PathProgramCache]: Analyzing trace with hash 455572716, now seen corresponding path program 35 times [2020-10-14 07:44:59,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:59,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030077515] [2020-10-14 07:44:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:59,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:04,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:04,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 07:45:04,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:04,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 07:45:04,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:04,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:45:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:45:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:45:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:04,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:04,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:04,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:04,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:04,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:04,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:04,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:04,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:04,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:04,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:04,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:45:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:04,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:05,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:05,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:45:05,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:05,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-14 07:45:05,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:05,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:45:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:05,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:05,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 07:45:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:05,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:05,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:45:05,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-14 07:45:05,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:05,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:45:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 07:45:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:06,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:06,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:45:06,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:06,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-14 07:45:06,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:06,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:45:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:06,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3001 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2920 trivial. 0 not checked. [2020-10-14 07:45:06,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030077515] [2020-10-14 07:45:06,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:06,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:45:06,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340024181] [2020-10-14 07:45:06,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:45:06,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:45:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:45:06,295 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand 13 states. [2020-10-14 07:45:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:06,444 INFO L93 Difference]: Finished difference Result 200 states and 236 transitions. [2020-10-14 07:45:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:45:06,445 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 204 [2020-10-14 07:45:06,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:06,446 INFO L225 Difference]: With dead ends: 200 [2020-10-14 07:45:06,446 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 07:45:06,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:45:06,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 07:45:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-14 07:45:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 07:45:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2020-10-14 07:45:06,452 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 204 [2020-10-14 07:45:06,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:06,453 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2020-10-14 07:45:06,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:45:06,453 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2020-10-14 07:45:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 07:45:06,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:06,455 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:06,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 07:45:06,455 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:06,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:06,456 INFO L82 PathProgramCache]: Analyzing trace with hash -444494450, now seen corresponding path program 36 times [2020-10-14 07:45:06,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:06,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203778945] [2020-10-14 07:45:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:06,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:11,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:11,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 07:45:11,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:11,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 07:45:11,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:11,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:45:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:45:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 07:45:11,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:11,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:11,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:11,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:11,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:11,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:11,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:11,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:11,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:11,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:45:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:11,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:11,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:45:11,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-14 07:45:11,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:11,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:45:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:45:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 07:45:11,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:12,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 07:45:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:12,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:12,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:45:12,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-14 07:45:12,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:12,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:45:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:12,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 07:45:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:13,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:45:13,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:13,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-10-14 07:45:13,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:13,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:45:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:13,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3020 backedges. 0 proven. 1527 refuted. 0 times theorem prover too weak. 1493 trivial. 0 not checked. [2020-10-14 07:45:13,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203778945] [2020-10-14 07:45:13,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:13,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:45:13,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043012583] [2020-10-14 07:45:13,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:45:13,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:13,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:45:13,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:45:13,503 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 18 states. [2020-10-14 07:45:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:14,071 INFO L93 Difference]: Finished difference Result 203 states and 243 transitions. [2020-10-14 07:45:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:45:14,072 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 206 [2020-10-14 07:45:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:14,073 INFO L225 Difference]: With dead ends: 203 [2020-10-14 07:45:14,074 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 07:45:14,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 07:45:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 07:45:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-14 07:45:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 07:45:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-10-14 07:45:14,082 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 206 [2020-10-14 07:45:14,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:14,083 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-10-14 07:45:14,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:45:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-10-14 07:45:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 07:45:14,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:14,085 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:14,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 07:45:14,085 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:14,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1244030841, now seen corresponding path program 37 times [2020-10-14 07:45:14,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:14,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757507715] [2020-10-14 07:45:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:14,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking...