/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/array-crafted/xor2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:18:37,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:18:37,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:18:37,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:18:37,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:18:37,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:18:37,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:18:37,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:18:37,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:18:37,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:18:37,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:18:37,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:18:37,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:18:37,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:18:37,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:18:37,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:18:37,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:18:37,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:18:37,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:18:37,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:18:37,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:18:37,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:18:37,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:18:37,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:18:37,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:18:37,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:18:37,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:18:37,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:18:37,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:18:37,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:18:37,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:18:37,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:18:37,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:18:37,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:18:37,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:18:37,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:18:37,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:18:37,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:18:37,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:18:37,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:18:37,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:18:37,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:18:37,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:18:37,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:18:37,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:18:37,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:18:37,649 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:18:37,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:18:37,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:18:37,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:18:37,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:18:37,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:18:37,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:18:37,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:18:37,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:18:37,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:18:37,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:18:37,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:18:37,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:18:37,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:18:37,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:18:37,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:18:37,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:18:37,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:18:37,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:18:37,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:18:37,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:18:37,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:18:37,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:18:37,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:18:37,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:18:37,654 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; [2020-10-13 23:18:37,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:18:37,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:18:37,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:18:37,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:18:37,985 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:18:37,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor2.i [2020-10-13 23:18:38,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3291a325/4b0f5aeb394142b481d48bb63e6cac99/FLAGc523a2700 [2020-10-13 23:18:38,529 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:18:38,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/xor2.i [2020-10-13 23:18:38,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3291a325/4b0f5aeb394142b481d48bb63e6cac99/FLAGc523a2700 [2020-10-13 23:18:38,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3291a325/4b0f5aeb394142b481d48bb63e6cac99 [2020-10-13 23:18:38,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:18:38,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:18:38,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:18:38,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:18:38,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:18:38,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:38" (1/1) ... [2020-10-13 23:18:38,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3d6b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:38, skipping insertion in model container [2020-10-13 23:18:38,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:38" (1/1) ... [2020-10-13 23:18:38,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:18:38,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:18:39,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:18:39,240 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:18:39,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:18:39,279 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:18:39,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:39 WrapperNode [2020-10-13 23:18:39,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:18:39,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:18:39,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:18:39,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:18:39,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:39" (1/1) ... [2020-10-13 23:18:39,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:39" (1/1) ... [2020-10-13 23:18:39,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:39" (1/1) ... [2020-10-13 23:18:39,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:39" (1/1) ... [2020-10-13 23:18:39,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:39" (1/1) ... [2020-10-13 23:18:39,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:39" (1/1) ... [2020-10-13 23:18:39,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:39" (1/1) ... [2020-10-13 23:18:39,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:18:39,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:18:39,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:18:39,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:18:39,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:18:39,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:18:39,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:18:39,490 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2020-10-13 23:18:39,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:18:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:18:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:18:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2020-10-13 23:18:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:18:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:18:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:18:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:18:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:18:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:18:39,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:18:39,752 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:18:39,753 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:18:39,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:39 BoogieIcfgContainer [2020-10-13 23:18:39,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:18:39,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:18:39,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:18:39,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:18:39,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:18:38" (1/3) ... [2020-10-13 23:18:39,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a65544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:39, skipping insertion in model container [2020-10-13 23:18:39,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:39" (2/3) ... [2020-10-13 23:18:39,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a65544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:39, skipping insertion in model container [2020-10-13 23:18:39,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:39" (3/3) ... [2020-10-13 23:18:39,769 INFO L109 eAbstractionObserver]: Analyzing ICFG xor2.i [2020-10-13 23:18:39,783 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:18:39,792 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:18:39,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:18:39,841 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:18:39,841 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:18:39,841 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:18:39,842 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:18:39,842 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:18:39,842 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:18:39,842 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:18:39,842 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:18:39,863 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 23:18:39,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:18:39,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:39,871 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] [2020-10-13 23:18:39,874 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:39,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:39,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-13 23:18:39,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:39,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754972269] [2020-10-13 23:18:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:40,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:40,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:40,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:18:40,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-13 23:18:40,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:40,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:18:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 23:18:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:40,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:40,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:18:40,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:40,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:18:40,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:18:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:40,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:40,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:18:40,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:40,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 23:18:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:18:40,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:18:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:40,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:40,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:40,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:18:40,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:40,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:18:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:40,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:18:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:40,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:40,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:40,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:40,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:18:40,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:40,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 23:18:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 23:18:40,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754972269] [2020-10-13 23:18:40,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:40,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-13 23:18:40,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832551475] [2020-10-13 23:18:40,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:18:40,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:40,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:18:40,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:18:40,626 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 23:18:40,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:40,725 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 23:18:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:18:40,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 23:18:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:40,738 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:18:40,738 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 23:18:40,743 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 [2020-10-13 23:18:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 23:18:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 23:18:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 23:18:40,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 23:18:40,788 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 23:18:40,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:40,789 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 23:18:40,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:18:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 23:18:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:18:40,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:40,792 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] [2020-10-13 23:18:40,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:18:40,793 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:40,793 INFO L82 PathProgramCache]: Analyzing trace with hash -595992629, now seen corresponding path program 1 times [2020-10-13 23:18:40,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:40,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878922592] [2020-10-13 23:18:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:41,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:41,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:18:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-13 23:18:41,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:41,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:18:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:18:41,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:41,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:41,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:41,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:41,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:18:41,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:41,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:18:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:41,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:41,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:41,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:41,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:18:41,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:41,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:41,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:41,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:18:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:41,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:18:41,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:41,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:18:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 23:18:41,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:18:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:41,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:41,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:41,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:18:41,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:41,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:18:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 23:18:41,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878922592] [2020-10-13 23:18:41,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:41,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 23:18:41,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201064132] [2020-10-13 23:18:41,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:18:41,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:41,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:18:41,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:18:41,869 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 23:18:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:41,949 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 23:18:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:18:41,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 23:18:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:41,951 INFO L225 Difference]: With dead ends: 45 [2020-10-13 23:18:41,951 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 23:18:41,953 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 [2020-10-13 23:18:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 23:18:41,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 23:18:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:18:41,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 23:18:41,961 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 23:18:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:41,961 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 23:18:41,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:18:41,962 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 23:18:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 23:18:41,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:41,963 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:18:41,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:18:41,964 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:41,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1309759401, now seen corresponding path program 1 times [2020-10-13 23:18:41,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:41,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526865246] [2020-10-13 23:18:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:42,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 23:18:44,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:18:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2236 [2020-10-13 23:18:44,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:44,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:18:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:44,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:44,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:44,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:44,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:18:44,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:44,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:44,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:44,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:44,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:18:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:44,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:44,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:44,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:44,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:18:44,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:44,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:18:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 23:18:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:44,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:44,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:44,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:44,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:18:44,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:44,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:18:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:44,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:44,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:44,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:18:44,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:44,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:18:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 23:18:44,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526865246] [2020-10-13 23:18:44,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:18:44,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:18:44,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547388571] [2020-10-13 23:18:44,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:18:44,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:44,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:18:44,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:18:44,325 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 23:18:44,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:44,391 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-13 23:18:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:18:44,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 23:18:44,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:44,393 INFO L225 Difference]: With dead ends: 48 [2020-10-13 23:18:44,393 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 23:18:44,394 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 [2020-10-13 23:18:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 23:18:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 23:18:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:18:44,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 23:18:44,401 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 23:18:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:44,401 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 23:18:44,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:18:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 23:18:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 23:18:44,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:44,403 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:18:44,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:18:44,403 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:44,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1462689141, now seen corresponding path program 1 times [2020-10-13 23:18:44,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:44,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437324338] [2020-10-13 23:18:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:44,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:47,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 23:18:47,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:18:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3034 [2020-10-13 23:18:47,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:47,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:18:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:18:47,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:47,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:47,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:47,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:47,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:18:47,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:47,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:47,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:47,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:18:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:47,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:47,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:18:47,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:47,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:18:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:47,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:47,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:47,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:47,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:18:47,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:47,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:47,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:47,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:47,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:18:47,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:47,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:18:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:47,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:18:47,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437324338] [2020-10-13 23:18:47,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:18:47,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:18:47,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265304070] [2020-10-13 23:18:47,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:18:47,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:47,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:18:47,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:18:47,577 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 23:18:47,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:47,666 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-13 23:18:47,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:18:47,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 23:18:47,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:47,668 INFO L225 Difference]: With dead ends: 43 [2020-10-13 23:18:47,668 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:18:47,669 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 [2020-10-13 23:18:47,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:18:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 23:18:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 23:18:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 23:18:47,676 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 23:18:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:47,679 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 23:18:47,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:18:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 23:18:47,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 23:18:47,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:47,681 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:18:47,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:18:47,681 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:47,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:47,682 INFO L82 PathProgramCache]: Analyzing trace with hash -233991671, now seen corresponding path program 1 times [2020-10-13 23:18:47,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:47,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639811164] [2020-10-13 23:18:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:48,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:52,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 23:18:52,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:18:52,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4695 [2020-10-13 23:18:52,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:52,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:18:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:18:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:18:52,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:18:52,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:52,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:52,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:52,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:52,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:52,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:18:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:52,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:52,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:52,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:18:52,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:52,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:52,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:18:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:52,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:52,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:52,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:52,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:18:52,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:52,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:52,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:52,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:52,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:52,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:52,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 23:18:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:52,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:52,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:18:52,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:52,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:18:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:18:52,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639811164] [2020-10-13 23:18:52,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:52,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:18:52,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106158605] [2020-10-13 23:18:52,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:18:52,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:52,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:18:52,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:18:52,495 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 23:18:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:52,579 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-13 23:18:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:18:52,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 23:18:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:52,581 INFO L225 Difference]: With dead ends: 45 [2020-10-13 23:18:52,581 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:18:52,582 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 [2020-10-13 23:18:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:18:52,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 23:18:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:18:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 23:18:52,588 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 23:18:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:52,589 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 23:18:52,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:18:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 23:18:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 23:18:52,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:52,590 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-13 23:18:52,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:18:52,590 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:52,591 INFO L82 PathProgramCache]: Analyzing trace with hash -571729401, now seen corresponding path program 2 times [2020-10-13 23:18:52,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:52,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732839611] [2020-10-13 23:18:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:57,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 23:18:57,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:18:57,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:18:57,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:57,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:18:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:18:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:18:57,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:57,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:57,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:57,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:57,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:18:57,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:57,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:57,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:57,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:18:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:57,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:57,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:57,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:18:57,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:57,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:57,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:57,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:18:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:57,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:57,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:57,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:57,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:18:57,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:57,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:57,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:57,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:57,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:57,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:57,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 23:18:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:57,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:57,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:57,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:57,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:18:57,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:57,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:57,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:18:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:57,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:18:57,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732839611] [2020-10-13 23:18:57,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:57,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:18:57,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521965311] [2020-10-13 23:18:57,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:18:57,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:57,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:18:57,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:18:57,721 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-13 23:18:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:57,816 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-13 23:18:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:18:57,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-13 23:18:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:57,817 INFO L225 Difference]: With dead ends: 47 [2020-10-13 23:18:57,817 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:18:57,819 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 [2020-10-13 23:18:57,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:18:57,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 23:18:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 23:18:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 23:18:57,831 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 44 [2020-10-13 23:18:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:57,831 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 23:18:57,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:18:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 23:18:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 23:18:57,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:57,833 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-13 23:18:57,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:18:57,834 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:57,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:57,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1279826565, now seen corresponding path program 3 times [2020-10-13 23:18:57,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:57,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692541371] [2020-10-13 23:18:57,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:02,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:02,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 23:19:02,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:19:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:19:02,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:02,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:19:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 23:19:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:19:02,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:02,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:02,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:02,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:02,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:02,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:02,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:02,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:19:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:19:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 23:19:02,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:02,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:02,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:19:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:02,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:02,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:02,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:19:02,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 23:19:02,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:02,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:02,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 23:19:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:02,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:02,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:02,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:19:02,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:19:02,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:02,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:19:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:19:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:19:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 23:19:02,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692541371] [2020-10-13 23:19:02,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:02,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:19:02,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458440727] [2020-10-13 23:19:02,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:19:02,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:02,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:19:02,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:19:02,948 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 23:19:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:03,100 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-13 23:19:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:19:03,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-13 23:19:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:03,103 INFO L225 Difference]: With dead ends: 59 [2020-10-13 23:19:03,103 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 23:19:03,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:19:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 23:19:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 23:19:03,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:19:03,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 23:19:03,115 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 46 [2020-10-13 23:19:03,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:03,115 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 23:19:03,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:19:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 23:19:03,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 23:19:03,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:03,117 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-13 23:19:03,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:19:03,117 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:03,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1687813091, now seen corresponding path program 4 times [2020-10-13 23:19:03,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:03,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309822278] [2020-10-13 23:19:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:03,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:03,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:03,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:08,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 23:19:08,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:19:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:19:08,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:08,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:19:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:19:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:19:08,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:08,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:08,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:08,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:08,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:08,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:08,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:08,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:19:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:08,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:08,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:08,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:19:08,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:08,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:08,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:19:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:08,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:08,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 23:19:08,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:08,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:19:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:19:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:19:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 23:19:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:08,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:08,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:08,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:08,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:19:08,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:08,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:19:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 23:19:08,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309822278] [2020-10-13 23:19:08,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:08,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:19:08,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143511499] [2020-10-13 23:19:08,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:19:08,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:08,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:19:08,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:19:08,258 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 23:19:08,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:08,377 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-13 23:19:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:19:08,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 23:19:08,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:08,378 INFO L225 Difference]: With dead ends: 63 [2020-10-13 23:19:08,379 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 23:19:08,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:19:08,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 23:19:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 23:19:08,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 23:19:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 23:19:08,391 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 23:19:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:08,392 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 23:19:08,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:19:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 23:19:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 23:19:08,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:08,397 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:19:08,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:19:08,397 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:08,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1931091649, now seen corresponding path program 5 times [2020-10-13 23:19:08,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:08,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591966186] [2020-10-13 23:19:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:10,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:13,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:19:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:19:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:19:13,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:13,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:19:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:19:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:19:13,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:13,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:13,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:13,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:13,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:19:13,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:13,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:13,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:13,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:19:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:13,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:13,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:19:13,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:19:13,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:13,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:19:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:13,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:13,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 23:19:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:13,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:19:13,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:13,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:19:13,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:13,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:13,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:13,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:19:13,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:13,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:19:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:13,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:19:13,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:13,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:19:13,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:13,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:19:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:13,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 23:19:13,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591966186] [2020-10-13 23:19:13,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:13,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:19:13,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832902404] [2020-10-13 23:19:13,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:19:13,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:13,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:19:13,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:19:13,581 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-13 23:19:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:13,689 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-13 23:19:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:19:13,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 23:19:13,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:13,691 INFO L225 Difference]: With dead ends: 68 [2020-10-13 23:19:13,692 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 23:19:13,695 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 [2020-10-13 23:19:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 23:19:13,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 23:19:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 23:19:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 23:19:13,708 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-13 23:19:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:13,711 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 23:19:13,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:19:13,712 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 23:19:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:19:13,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:13,716 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:19:13,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:19:13,716 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:13,717 INFO L82 PathProgramCache]: Analyzing trace with hash -921066333, now seen corresponding path program 6 times [2020-10-13 23:19:13,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:13,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045968905] [2020-10-13 23:19:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:13,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:18,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:18,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 23:19:18,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:19:18,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:18,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:19:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:19:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:19:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:18,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:18,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:18,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:18,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:18,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:18,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:18,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:18,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:19:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:18,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:18,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:18,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:18,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:19:18,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:19:18,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:18,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:18,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:18,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:18,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:18,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 23:19:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:18,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:18,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:18,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:19:18,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:18,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:19:18,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:18,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:18,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:19:18,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:19:18,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:19:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:18,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 23:19:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:18,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:18,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:19:18,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:18,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:19:18,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:18,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:19:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-13 23:19:18,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045968905] [2020-10-13 23:19:18,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:18,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:19:18,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508539746] [2020-10-13 23:19:18,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:19:18,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:18,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:19:18,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:19:18,890 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-13 23:19:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:19,025 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-13 23:19:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:19:19,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-13 23:19:19,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:19,026 INFO L225 Difference]: With dead ends: 69 [2020-10-13 23:19:19,027 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:19:19,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:19:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:19:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 23:19:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 23:19:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 23:19:19,037 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 23:19:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:19,037 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 23:19:19,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:19:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 23:19:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:19:19,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:19,040 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:19:19,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:19:19,041 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:19,045 INFO L82 PathProgramCache]: Analyzing trace with hash -493258879, now seen corresponding path program 7 times [2020-10-13 23:19:19,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:19,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039927782] [2020-10-13 23:19:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:19,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:24,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:19:24,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:19:24,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:24,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:19:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 23:19:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:19:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:24,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:24,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:24,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:24,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:24,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:24,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:19:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:24,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:19:24,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:24,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:19:24,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:24,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:24,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:19:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:24,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:19:24,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:24,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:19:24,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:24,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:24,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:24,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:24,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:19:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:24,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:19:24,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:24,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:19:24,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:24,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:19:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-13 23:19:24,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039927782] [2020-10-13 23:19:24,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:24,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:19:24,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873791481] [2020-10-13 23:19:24,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:19:24,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:24,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:19:24,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:19:24,189 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 23:19:24,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:24,283 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-13 23:19:24,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:19:24,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-13 23:19:24,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:24,284 INFO L225 Difference]: With dead ends: 63 [2020-10-13 23:19:24,285 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 23:19:24,285 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 [2020-10-13 23:19:24,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 23:19:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 23:19:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 23:19:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 23:19:24,291 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 66 [2020-10-13 23:19:24,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:24,291 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 23:19:24,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:19:24,291 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 23:19:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 23:19:24,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:24,292 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:19:24,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:19:24,293 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:24,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:24,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1284970879, now seen corresponding path program 8 times [2020-10-13 23:19:24,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:24,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860768381] [2020-10-13 23:19:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:24,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:29,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 23:19:29,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:19:29,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:29,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:19:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:19:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:19:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:29,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:29,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:29,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:29,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:29,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:29,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:29,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:29,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:19:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:29,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:29,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:19:29,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:19:29,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:29,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:19:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:29,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:29,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:19:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:29,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:29,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:19:29,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:19:29,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:29,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:19:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:29,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:19:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:29,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:19:29,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:19:29,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:29,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:29,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:29,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:19:29,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:29,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 23:19:29,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860768381] [2020-10-13 23:19:29,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:29,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:19:29,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391044354] [2020-10-13 23:19:29,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:19:29,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:29,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:19:29,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:19:29,433 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-10-13 23:19:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:29,512 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-10-13 23:19:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:19:29,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 23:19:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:29,513 INFO L225 Difference]: With dead ends: 78 [2020-10-13 23:19:29,513 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:19:29,514 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 [2020-10-13 23:19:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:19:29,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 23:19:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 23:19:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 23:19:29,519 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-13 23:19:29,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:29,519 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 23:19:29,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:19:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 23:19:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 23:19:29,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:29,520 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:19:29,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:19:29,521 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:29,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1298518815, now seen corresponding path program 9 times [2020-10-13 23:19:29,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:29,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976851848] [2020-10-13 23:19:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:34,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:34,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 23:19:34,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:19:34,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:34,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:19:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:19:34,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:19:34,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:34,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:34,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:34,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:34,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:34,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:34,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:34,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:34,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:34,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:34,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:34,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:34,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:19:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:34,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:34,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:19:34,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:19:34,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:34,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:34,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 23:19:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:34,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:34,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:19:34,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:19:34,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:34,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:19:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:19:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:19:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:34,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:19:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:34,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:34,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:34,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:34,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:19:34,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:19:34,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:34,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:19:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-13 23:19:34,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976851848] [2020-10-13 23:19:34,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:34,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:19:34,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016866577] [2020-10-13 23:19:34,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:19:34,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:34,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:19:34,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:19:34,688 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-13 23:19:34,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:34,847 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-10-13 23:19:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:19:34,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-13 23:19:34,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:34,849 INFO L225 Difference]: With dead ends: 79 [2020-10-13 23:19:34,851 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 23:19:34,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:19:34,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 23:19:34,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 23:19:34,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:19:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 23:19:34,861 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 23:19:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:34,864 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 23:19:34,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:19:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 23:19:34,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 23:19:34,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:34,865 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:19:34,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:19:34,865 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:34,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:34,866 INFO L82 PathProgramCache]: Analyzing trace with hash 152107071, now seen corresponding path program 10 times [2020-10-13 23:19:34,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:34,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371316408] [2020-10-13 23:19:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:34,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:39,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 23:19:39,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:39,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:19:39,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:39,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:19:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 23:19:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:19:39,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:39,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:39,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:39,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:39,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:39,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:39,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:39,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:19:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:39,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:39,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:19:39,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:39,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:19:39,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:39,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:39,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:19:39,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:19:39,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:19:39,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:39,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:19:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:39,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:39,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:19:39,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:19:39,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:39,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:19:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:39,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 23:19:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:39,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:39,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:19:39,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:19:39,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:39,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:19:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-13 23:19:40,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371316408] [2020-10-13 23:19:40,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:40,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:19:40,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599269125] [2020-10-13 23:19:40,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:19:40,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:19:40,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:19:40,003 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 9 states. [2020-10-13 23:19:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:40,201 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-10-13 23:19:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:19:40,202 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-13 23:19:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:40,203 INFO L225 Difference]: With dead ends: 83 [2020-10-13 23:19:40,203 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 23:19:40,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:19:40,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 23:19:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 23:19:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 23:19:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 23:19:40,210 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-13 23:19:40,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:40,210 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 23:19:40,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:19:40,210 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 23:19:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 23:19:40,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:40,211 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:19:40,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:19:40,212 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:40,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:40,212 INFO L82 PathProgramCache]: Analyzing trace with hash -355367651, now seen corresponding path program 11 times [2020-10-13 23:19:40,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:40,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772656775] [2020-10-13 23:19:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:40,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:40,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:45,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 23:19:45,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:45,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:19:45,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:45,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:45,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:19:45,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 23:19:45,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:19:45,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:45,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:45,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:45,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:45,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:45,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:19:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:45,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:19:45,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:19:45,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:45,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:45,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:45,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:19:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:45,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:19:45,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:45,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:19:45,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:45,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:45,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:45,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:19:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:45,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:19:45,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:19:45,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:45,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:19:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-13 23:19:45,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772656775] [2020-10-13 23:19:45,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:45,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:19:45,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583795204] [2020-10-13 23:19:45,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:19:45,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:45,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:19:45,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:19:45,342 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 23:19:45,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:45,435 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-13 23:19:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:19:45,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-13 23:19:45,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:45,437 INFO L225 Difference]: With dead ends: 75 [2020-10-13 23:19:45,437 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 23:19:45,438 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 [2020-10-13 23:19:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 23:19:45,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 23:19:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 23:19:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 23:19:45,444 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 82 [2020-10-13 23:19:45,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:45,444 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 23:19:45,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:19:45,445 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 23:19:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 23:19:45,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:45,445 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:19:45,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:19:45,446 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:45,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:45,446 INFO L82 PathProgramCache]: Analyzing trace with hash 344932379, now seen corresponding path program 12 times [2020-10-13 23:19:45,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:45,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296109304] [2020-10-13 23:19:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:45,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:50,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 23:19:50,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:19:50,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:50,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:50,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:19:50,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 23:19:50,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:19:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:50,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:50,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:50,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:50,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:50,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:50,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:50,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:19:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:50,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:50,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:19:50,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 23:19:50,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:50,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:50,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:50,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:19:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:50,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:19:50,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:19:50,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:50,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:19:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:50,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:50,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:19:50,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:50,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 23:19:50,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:50,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:50,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:19:50,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:50,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-13 23:19:50,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296109304] [2020-10-13 23:19:50,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:50,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:19:50,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970746117] [2020-10-13 23:19:50,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:19:50,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:50,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:19:50,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:19:50,696 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-13 23:19:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:50,855 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-13 23:19:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:19:50,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 23:19:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:50,857 INFO L225 Difference]: With dead ends: 77 [2020-10-13 23:19:50,857 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:19:50,858 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 [2020-10-13 23:19:50,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:19:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 23:19:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 23:19:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 23:19:50,877 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 84 [2020-10-13 23:19:50,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:50,878 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 23:19:50,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:19:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 23:19:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 23:19:50,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:50,880 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:19:50,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:19:50,881 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:50,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:50,882 INFO L82 PathProgramCache]: Analyzing trace with hash -976604263, now seen corresponding path program 13 times [2020-10-13 23:19:50,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:50,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693913228] [2020-10-13 23:19:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:55,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:55,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 23:19:55,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:19:55,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:55,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:19:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:19:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:19:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:55,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:55,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:55,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:55,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:55,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:55,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:55,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:55,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:55,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:19:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:55,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:55,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:19:55,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:55,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:19:55,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:55,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:19:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:55,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:55,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:19:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:56,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:56,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:19:56,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:56,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:19:56,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:56,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:56,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:19:56,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:56,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:56,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:19:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:56,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:56,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:19:56,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:19:56,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:56,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:19:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 23:19:56,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693913228] [2020-10-13 23:19:56,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:56,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:19:56,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555224713] [2020-10-13 23:19:56,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:19:56,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:56,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:19:56,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:19:56,060 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-13 23:19:56,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:56,169 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-13 23:19:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:19:56,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-13 23:19:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:56,171 INFO L225 Difference]: With dead ends: 96 [2020-10-13 23:19:56,171 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 23:19:56,171 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 [2020-10-13 23:19:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 23:19:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 23:19:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 23:19:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 23:19:56,183 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-13 23:19:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:56,188 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 23:19:56,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:19:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 23:19:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 23:19:56,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:56,189 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:19:56,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:19:56,190 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:56,190 INFO L82 PathProgramCache]: Analyzing trace with hash 830993019, now seen corresponding path program 14 times [2020-10-13 23:19:56,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:56,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636616697] [2020-10-13 23:19:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:56,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:01,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 23:20:01,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:20:01,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:01,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:20:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 23:20:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:20:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:01,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:01,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:01,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:01,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:01,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:01,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:01,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:01,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:20:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:01,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:01,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:20:01,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:01,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:20:01,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:01,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:01,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:01,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 23:20:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:01,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:01,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:20:01,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:20:01,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:01,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:20:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:20:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:20:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 23:20:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:20:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:01,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:20:01,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:20:01,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:01,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:20:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:01,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:20:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-13 23:20:01,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636616697] [2020-10-13 23:20:01,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:01,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:20:01,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487929110] [2020-10-13 23:20:01,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:20:01,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:01,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:20:01,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:20:01,435 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-13 23:20:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:01,657 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-10-13 23:20:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:20:01,657 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-13 23:20:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:01,658 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:20:01,658 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 23:20:01,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:20:01,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 23:20:01,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 23:20:01,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 23:20:01,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 23:20:01,669 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 23:20:01,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:01,669 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 23:20:01,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:20:01,669 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 23:20:01,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 23:20:01,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:01,670 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:01,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:20:01,671 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:01,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:01,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1665195943, now seen corresponding path program 15 times [2020-10-13 23:20:01,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:01,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192318222] [2020-10-13 23:20:01,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:01,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:01,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:06,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:06,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 23:20:06,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:06,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:20:06,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:06,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:20:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 23:20:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:20:06,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:06,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:06,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:06,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:06,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:06,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:06,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:06,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:06,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:06,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:06,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:20:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:06,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:06,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:06,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:06,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:20:06,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:06,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:20:06,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:06,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:06,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:06,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 23:20:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:06,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:06,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:06,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:20:06,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:06,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:20:06,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:06,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:06,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:20:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:06,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:06,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:20:06,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:20:06,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:06,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:20:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2020-10-13 23:20:06,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192318222] [2020-10-13 23:20:06,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:06,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:20:06,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025680174] [2020-10-13 23:20:06,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:20:06,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:06,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:20:06,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:20:06,846 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-13 23:20:06,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:06,995 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 23:20:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:20:06,996 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 23:20:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:06,997 INFO L225 Difference]: With dead ends: 85 [2020-10-13 23:20:06,997 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 23:20:06,997 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 [2020-10-13 23:20:06,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 23:20:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 23:20:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 23:20:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 23:20:07,006 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-13 23:20:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:07,008 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 23:20:07,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:20:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 23:20:07,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:20:07,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:07,010 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:07,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:20:07,010 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:07,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1893301161, now seen corresponding path program 16 times [2020-10-13 23:20:07,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:07,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602789615] [2020-10-13 23:20:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:07,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:07,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:07,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:12,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:20:12,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:12,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:20:12,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:12,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:20:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:20:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:20:12,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:12,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:12,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:12,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:12,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:12,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:12,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:20:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:12,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:20:12,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:12,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:20:12,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:12,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:12,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:12,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:20:12,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:12,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 23:20:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:12,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:12,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:20:12,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:20:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:12,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:20:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:20:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:12,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:12,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:20:12,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:20:12,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:12,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:20:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 23:20:12,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602789615] [2020-10-13 23:20:12,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:12,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:20:12,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426330241] [2020-10-13 23:20:12,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:20:12,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:12,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:20:12,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:20:12,155 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-10-13 23:20:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:12,245 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2020-10-13 23:20:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:20:12,245 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-13 23:20:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:12,246 INFO L225 Difference]: With dead ends: 106 [2020-10-13 23:20:12,246 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 23:20:12,247 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 [2020-10-13 23:20:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 23:20:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 23:20:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 23:20:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 23:20:12,252 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-13 23:20:12,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:12,252 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 23:20:12,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:20:12,252 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 23:20:12,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 23:20:12,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:12,254 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:12,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:20:12,254 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:12,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1630834873, now seen corresponding path program 17 times [2020-10-13 23:20:12,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:12,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569600223] [2020-10-13 23:20:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:12,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:17,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:17,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:20:17,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:20:17,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:17,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:20:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 23:20:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:20:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:17,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:17,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:17,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:17,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:17,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:17,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:20:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:17,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:17,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:20:17,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:20:17,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:17,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:20:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:20:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:20:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:17,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 23:20:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:17,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:17,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:17,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:17,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:20:17,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:17,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:20:17,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:17,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:20:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:20:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:17,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:17,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:20:17,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:17,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:20:17,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:17,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:20:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-13 23:20:17,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569600223] [2020-10-13 23:20:17,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:17,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:20:17,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007257286] [2020-10-13 23:20:17,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:20:17,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:17,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:20:17,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:20:17,431 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-13 23:20:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:17,662 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-13 23:20:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:20:17,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-13 23:20:17,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:17,664 INFO L225 Difference]: With dead ends: 107 [2020-10-13 23:20:17,664 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 23:20:17,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:20:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 23:20:17,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 23:20:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 23:20:17,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 23:20:17,670 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-13 23:20:17,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:17,670 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 23:20:17,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:20:17,670 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 23:20:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 23:20:17,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:17,671 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:17,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:20:17,672 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:17,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:17,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1815251177, now seen corresponding path program 18 times [2020-10-13 23:20:17,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:17,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576740861] [2020-10-13 23:20:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:17,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:22,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:22,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 23:20:22,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:20:22,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:22,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:20:22,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 23:20:22,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:20:22,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:22,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:22,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:22,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:22,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:22,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:22,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:22,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:20:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:22,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:22,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:22,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:22,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:20:22,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:20:22,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:22,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:20:22,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:20:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:22,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:22,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:22,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:20:22,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:22,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:20:22,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:22,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:20:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:22,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:22,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:20:22,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:20:22,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:22,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:20:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:22,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-13 23:20:22,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576740861] [2020-10-13 23:20:22,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:22,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:20:22,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955306614] [2020-10-13 23:20:22,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:20:22,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:22,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:20:22,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:20:22,862 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-13 23:20:22,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:22,986 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-13 23:20:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:20:22,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 23:20:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:22,990 INFO L225 Difference]: With dead ends: 93 [2020-10-13 23:20:22,990 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 23:20:22,991 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 [2020-10-13 23:20:22,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 23:20:22,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 23:20:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 23:20:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 23:20:22,995 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-13 23:20:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:22,996 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 23:20:22,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:20:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 23:20:22,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 23:20:22,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:22,997 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:22,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:20:22,998 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:22,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:22,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1361335403, now seen corresponding path program 19 times [2020-10-13 23:20:22,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:22,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213400289] [2020-10-13 23:20:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:23,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:23,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:28,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:20:28,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:28,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:20:28,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:28,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:28,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:20:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:20:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:20:28,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:28,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:28,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:28,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:28,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:28,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:28,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:28,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:20:28,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:20:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:28,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:28,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:20:28,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:28,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 23:20:28,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:28,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:20:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:28,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:28,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:20:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:28,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:20:28,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:20:28,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:28,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:20:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:28,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:28,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:20:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:28,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:28,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:20:28,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:28,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:20:28,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:28,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:20:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 23:20:28,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213400289] [2020-10-13 23:20:28,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:28,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:20:28,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481488752] [2020-10-13 23:20:28,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:20:28,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:28,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:20:28,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:20:28,154 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-13 23:20:28,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:28,237 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 23:20:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:20:28,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-13 23:20:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:28,239 INFO L225 Difference]: With dead ends: 116 [2020-10-13 23:20:28,239 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 23:20:28,240 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 [2020-10-13 23:20:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 23:20:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 23:20:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 23:20:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 23:20:28,245 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-13 23:20:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:28,245 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 23:20:28,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:20:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 23:20:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 23:20:28,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:28,247 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:28,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:20:28,247 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:28,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:28,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2136417655, now seen corresponding path program 20 times [2020-10-13 23:20:28,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:28,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125012516] [2020-10-13 23:20:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:28,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:33,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:33,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 23:20:33,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:33,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:20:33,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:33,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:33,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:20:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:20:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:20:33,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:33,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:33,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:33,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:33,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:20:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:33,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:33,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:20:33,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:33,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:20:33,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:33,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:20:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:20:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:20:33,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:20:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:33,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:33,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:33,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:33,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:20:33,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:33,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:20:33,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:33,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:20:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:33,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:20:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:33,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:33,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:20:33,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:33,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:20:33,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:33,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:20:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-13 23:20:33,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125012516] [2020-10-13 23:20:33,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:33,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:20:33,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121454059] [2020-10-13 23:20:33,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:20:33,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:33,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:20:33,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:20:33,444 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-13 23:20:33,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:33,693 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-13 23:20:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:20:33,700 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-13 23:20:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:33,701 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:20:33,701 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 23:20:33,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:20:33,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 23:20:33,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 23:20:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 23:20:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 23:20:33,707 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 23:20:33,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:33,707 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 23:20:33,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:20:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 23:20:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 23:20:33,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:33,709 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:33,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:20:33,709 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:33,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:33,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1189436331, now seen corresponding path program 21 times [2020-10-13 23:20:33,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:33,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346154139] [2020-10-13 23:20:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:33,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:33,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:38,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:38,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 23:20:38,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:38,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:20:38,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:38,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:20:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:20:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:20:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:38,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:38,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:38,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:38,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:38,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:38,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:38,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:38,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:20:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:38,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:38,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:20:38,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:38,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:20:38,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:38,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:20:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:20:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:20:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:38,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 23:20:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:38,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:38,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:20:38,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:38,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:20:38,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:38,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:20:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:38,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:38,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:20:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:38,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:38,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:20:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 23:20:38,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:38,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:20:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2020-10-13 23:20:38,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346154139] [2020-10-13 23:20:38,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:38,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:20:38,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145480647] [2020-10-13 23:20:38,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:20:38,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:38,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:20:38,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:20:38,931 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-13 23:20:39,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:39,214 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2020-10-13 23:20:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:20:39,215 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-13 23:20:39,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:39,216 INFO L225 Difference]: With dead ends: 121 [2020-10-13 23:20:39,216 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 23:20:39,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:20:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 23:20:39,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 23:20:39,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 23:20:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 23:20:39,221 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 114 [2020-10-13 23:20:39,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:39,221 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 23:20:39,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:20:39,222 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 23:20:39,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 23:20:39,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:39,222 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:39,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:20:39,223 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:39,223 INFO L82 PathProgramCache]: Analyzing trace with hash 566314163, now seen corresponding path program 22 times [2020-10-13 23:20:39,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:39,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705854047] [2020-10-13 23:20:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:39,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:39,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:44,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 23:20:44,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:20:44,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:44,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:44,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:20:44,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 23:20:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:20:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:44,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:44,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:44,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:44,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:44,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:20:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:44,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:44,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:20:44,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:44,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:20:44,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:44,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:44,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:20:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:44,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:44,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:20:44,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:44,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:20:44,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:44,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:44,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:44,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:44,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:44,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:20:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:44,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:44,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:20:44,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:44,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 23:20:44,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:44,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:44,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:44,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:20:44,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:44,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-13 23:20:44,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705854047] [2020-10-13 23:20:44,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:44,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:20:44,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846917127] [2020-10-13 23:20:44,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:20:44,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:44,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:20:44,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:20:44,452 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 23:20:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:44,592 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-13 23:20:44,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:20:44,593 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 23:20:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:44,593 INFO L225 Difference]: With dead ends: 105 [2020-10-13 23:20:44,594 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 23:20:44,594 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 [2020-10-13 23:20:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 23:20:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 23:20:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 23:20:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 23:20:44,600 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-13 23:20:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:44,600 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 23:20:44,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:20:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 23:20:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:20:44,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:44,601 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:44,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:20:44,602 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:44,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:44,602 INFO L82 PathProgramCache]: Analyzing trace with hash -426798543, now seen corresponding path program 23 times [2020-10-13 23:20:44,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:44,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400780977] [2020-10-13 23:20:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:44,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:44,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:49,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:49,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 23:20:49,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:20:49,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:49,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:20:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 23:20:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:20:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:49,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:49,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:49,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:49,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:49,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:49,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:49,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:49,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:49,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:20:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:49,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:49,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:20:49,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:49,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 23:20:49,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:49,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:49,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:49,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:20:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:49,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:49,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:49,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:20:49,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:20:49,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:49,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 23:20:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:49,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:20:49,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:20:49,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:49,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:20:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-13 23:20:49,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400780977] [2020-10-13 23:20:49,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:49,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:20:49,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139224388] [2020-10-13 23:20:49,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:20:49,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:49,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:20:49,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:20:49,832 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-13 23:20:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:49,978 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-13 23:20:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:20:49,978 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 23:20:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:49,979 INFO L225 Difference]: With dead ends: 107 [2020-10-13 23:20:49,980 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 23:20:49,981 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 [2020-10-13 23:20:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 23:20:49,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 23:20:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 23:20:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 23:20:49,985 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-13 23:20:49,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:49,985 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 23:20:49,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:20:49,986 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 23:20:49,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 23:20:49,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:49,987 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:49,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:20:49,987 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:49,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:49,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1325369297, now seen corresponding path program 24 times [2020-10-13 23:20:49,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:49,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848987761] [2020-10-13 23:20:49,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:55,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 23:20:55,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:55,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:20:55,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:55,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:20:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:20:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:20:55,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:55,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:55,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:55,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:55,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:55,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:55,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:20:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:55,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:55,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:20:55,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:55,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 23:20:55,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:55,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:20:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:55,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:55,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:20:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:55,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:20:55,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:55,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:20:55,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:55,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:55,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:55,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:20:55,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:55,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:55,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:20:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:55,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:20:55,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:20:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:20:55,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:55,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:20:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 23:20:55,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848987761] [2020-10-13 23:20:55,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:55,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:20:55,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153261641] [2020-10-13 23:20:55,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:20:55,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:55,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:20:55,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:20:55,184 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-13 23:20:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:20:55,292 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-13 23:20:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:20:55,293 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-13 23:20:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:20:55,293 INFO L225 Difference]: With dead ends: 134 [2020-10-13 23:20:55,294 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 23:20:55,294 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 [2020-10-13 23:20:55,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 23:20:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 23:20:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:20:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 23:20:55,301 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-13 23:20:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:20:55,302 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 23:20:55,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:20:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 23:20:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 23:20:55,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:20:55,306 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:20:55,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:20:55,306 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:20:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:20:55,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1856373359, now seen corresponding path program 25 times [2020-10-13 23:20:55,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:20:55,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541027077] [2020-10-13 23:20:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:20:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:55,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:55,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 23:21:00,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:21:00,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:00,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:21:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 23:21:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:21:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:00,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:00,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:00,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:00,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:00,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:00,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:00,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:00,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:21:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:00,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:00,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:21:00,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 23:21:00,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:00,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 23:21:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:00,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:21:00,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 23:21:00,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:00,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:00,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:00,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:21:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:00,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:00,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:21:00,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:00,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 23:21:00,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:00,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:21:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2020-10-13 23:21:00,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541027077] [2020-10-13 23:21:00,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:00,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:21:00,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836491613] [2020-10-13 23:21:00,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:21:00,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:00,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:21:00,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:21:00,582 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-13 23:21:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:00,709 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-13 23:21:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:21:00,710 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-13 23:21:00,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:00,711 INFO L225 Difference]: With dead ends: 111 [2020-10-13 23:21:00,711 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 23:21:00,712 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 [2020-10-13 23:21:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 23:21:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 23:21:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 23:21:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 23:21:00,717 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-13 23:21:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:00,717 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 23:21:00,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:21:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 23:21:00,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 23:21:00,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:00,718 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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] [2020-10-13 23:21:00,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:21:00,719 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:00,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:00,719 INFO L82 PathProgramCache]: Analyzing trace with hash -757232753, now seen corresponding path program 26 times [2020-10-13 23:21:00,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:00,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089455048] [2020-10-13 23:21:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:00,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:00,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:05,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:05,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 23:21:05,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:21:05,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:05,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:21:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 23:21:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:21:05,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:05,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:05,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:05,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:21:05,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:05,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:21:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:05,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:05,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:05,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:21:05,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:21:05,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:05,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:05,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 23:21:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:05,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:05,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:05,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:21:05,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:05,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:21:05,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:05,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:05,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:21:05,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:21:05,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:21:05,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:05,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:21:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:05,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:05,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:05,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:21:05,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:05,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 23:21:05,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:05,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:21:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2020-10-13 23:21:05,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089455048] [2020-10-13 23:21:05,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:05,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:21:05,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660822425] [2020-10-13 23:21:05,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:21:05,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:05,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:21:05,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:21:05,998 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-13 23:21:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:06,287 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-13 23:21:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:21:06,287 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 128 [2020-10-13 23:21:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:06,288 INFO L225 Difference]: With dead ends: 139 [2020-10-13 23:21:06,288 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 23:21:06,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:21:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 23:21:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 23:21:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 23:21:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 23:21:06,294 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-13 23:21:06,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:06,294 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 23:21:06,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:21:06,294 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 23:21:06,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 23:21:06,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:06,295 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:21:06,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:21:06,296 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:06,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:06,296 INFO L82 PathProgramCache]: Analyzing trace with hash -404212371, now seen corresponding path program 27 times [2020-10-13 23:21:06,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:06,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230135791] [2020-10-13 23:21:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:11,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 23:21:11,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:11,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:21:11,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:11,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:21:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:21:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:21:11,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:11,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:11,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:11,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:11,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:11,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:11,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:11,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:11,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:11,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:11,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:11,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:21:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:11,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:11,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:21:11,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:21:11,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:11,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:21:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:11,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:21:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:11,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:21:11,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:11,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:21:11,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:11,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:21:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:21:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:11,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:11,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:21:11,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:21:11,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:11,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:21:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:11,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 23:21:11,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230135791] [2020-10-13 23:21:11,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:11,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:21:11,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279670337] [2020-10-13 23:21:11,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:21:11,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:11,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:21:11,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:21:11,518 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2020-10-13 23:21:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:11,652 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2020-10-13 23:21:11,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:21:11,653 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-10-13 23:21:11,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:11,653 INFO L225 Difference]: With dead ends: 144 [2020-10-13 23:21:11,654 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 23:21:11,654 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 [2020-10-13 23:21:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 23:21:11,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 23:21:11,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:21:11,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 23:21:11,661 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-13 23:21:11,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:11,661 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 23:21:11,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:21:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 23:21:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 23:21:11,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:11,663 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:21:11,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:21:11,664 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:11,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:11,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1117001649, now seen corresponding path program 28 times [2020-10-13 23:21:11,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:11,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926273140] [2020-10-13 23:21:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:11,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:11,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:16,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:16,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 23:21:16,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:21:16,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:16,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:21:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 23:21:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:21:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:16,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:16,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:16,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:16,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:16,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:21:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:16,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:16,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:16,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:21:16,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:16,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:21:16,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:16,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:16,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:16,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:16,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:16,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:16,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:21:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:16,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:16,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:16,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:21:16,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:21:16,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:16,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:21:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:21:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:21:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:16,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:21:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:16,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:16,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:21:16,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:21:16,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:16,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:21:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2020-10-13 23:21:16,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926273140] [2020-10-13 23:21:16,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:16,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:21:16,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117574045] [2020-10-13 23:21:16,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:21:16,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:16,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:21:16,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:21:16,951 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-13 23:21:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:17,274 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2020-10-13 23:21:17,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:21:17,275 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-13 23:21:17,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:17,276 INFO L225 Difference]: With dead ends: 145 [2020-10-13 23:21:17,276 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 23:21:17,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:21:17,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 23:21:17,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 23:21:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 23:21:17,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 23:21:17,282 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-13 23:21:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:17,282 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 23:21:17,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:21:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 23:21:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 23:21:17,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:17,284 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:21:17,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:21:17,284 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:17,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1715781075, now seen corresponding path program 29 times [2020-10-13 23:21:17,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:17,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608189921] [2020-10-13 23:21:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:17,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:22,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:22,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 23:21:22,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:21:22,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:22,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:21:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 23:21:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:21:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:22,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:22,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:22,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:22,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:22,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:22,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:22,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:22,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:21:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:22,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:22,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:22,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:21:22,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:22,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:21:22,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:22,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:21:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:21:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:21:22,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:22,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:21:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:22,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:22,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:21:22,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 23:21:22,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:22,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:21:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:22,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:21:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:22,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:22,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:21:22,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:22,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 23:21:22,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:22,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:22,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:22,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:21:22,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:22,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2020-10-13 23:21:22,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608189921] [2020-10-13 23:21:22,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:22,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:21:22,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286577284] [2020-10-13 23:21:22,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:21:22,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:22,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:21:22,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:21:22,609 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-13 23:21:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:22,992 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2020-10-13 23:21:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:21:22,993 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-13 23:21:22,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:22,994 INFO L225 Difference]: With dead ends: 149 [2020-10-13 23:21:22,994 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 23:21:22,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:21:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 23:21:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 23:21:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 23:21:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 23:21:22,999 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-13 23:21:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:23,000 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 23:21:23,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:21:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 23:21:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 23:21:23,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:23,001 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:21:23,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:21:23,002 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:23,002 INFO L82 PathProgramCache]: Analyzing trace with hash -470286965, now seen corresponding path program 30 times [2020-10-13 23:21:23,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:23,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607245925] [2020-10-13 23:21:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:23,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:23,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:23,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:28,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 23:21:28,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:21:28,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:28,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:21:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 23:21:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:21:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:28,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:28,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:28,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:28,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:28,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:21:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:28,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:28,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:28,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 23:21:28,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:28,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:28,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:28,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:21:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:28,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 23:21:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:28,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:28,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:21:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:28,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:28,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:28,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:21:28,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:28,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:28,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:28,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:21:28,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:28,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-13 23:21:28,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607245925] [2020-10-13 23:21:28,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:28,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:21:28,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545549062] [2020-10-13 23:21:28,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:21:28,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:28,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:21:28,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:21:28,326 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-13 23:21:28,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:28,428 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2020-10-13 23:21:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:21:28,428 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-13 23:21:28,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:28,429 INFO L225 Difference]: With dead ends: 127 [2020-10-13 23:21:28,429 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 23:21:28,430 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 [2020-10-13 23:21:28,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 23:21:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 23:21:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:21:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 23:21:28,434 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-13 23:21:28,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:28,435 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 23:21:28,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:21:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 23:21:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 23:21:28,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:28,436 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:21:28,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:21:28,436 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:28,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:28,437 INFO L82 PathProgramCache]: Analyzing trace with hash -184021751, now seen corresponding path program 31 times [2020-10-13 23:21:28,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:28,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690676436] [2020-10-13 23:21:28,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:33,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:33,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 23:21:33,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:33,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:21:33,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:33,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:21:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 23:21:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:21:33,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:33,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:33,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:33,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:33,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:33,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:33,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:33,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:33,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:33,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:33,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:21:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:33,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:33,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:33,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:33,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:33,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 23:21:33,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:33,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:21:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:33,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:33,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:33,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:33,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:33,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 23:21:33,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:33,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:33,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:33,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:33,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:33,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:33,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:21:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:33,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:33,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:33,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:33,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:33,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 23:21:33,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:33,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:21:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:33,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-13 23:21:33,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690676436] [2020-10-13 23:21:33,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:33,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:21:33,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728431808] [2020-10-13 23:21:33,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:21:33,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:33,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:21:33,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:21:33,772 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-13 23:21:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:33,928 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-10-13 23:21:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:21:33,928 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-13 23:21:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:33,930 INFO L225 Difference]: With dead ends: 129 [2020-10-13 23:21:33,930 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 23:21:33,931 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 [2020-10-13 23:21:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 23:21:33,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 23:21:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 23:21:33,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 23:21:33,937 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-13 23:21:33,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:33,937 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 23:21:33,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:21:33,938 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 23:21:33,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 23:21:33,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:33,939 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:21:33,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:21:33,939 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:33,940 INFO L82 PathProgramCache]: Analyzing trace with hash 38941959, now seen corresponding path program 32 times [2020-10-13 23:21:33,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:33,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270541924] [2020-10-13 23:21:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:34,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:38,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:38,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 23:21:38,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 23:21:38,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:38,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:21:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:21:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:21:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:39,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:39,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:39,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:39,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:39,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:39,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:39,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:39,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:39,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:21:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:39,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:39,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:39,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:39,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 23:21:39,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:39,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:21:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:21:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:39,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:39,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:39,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:39,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:39,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 23:21:39,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:39,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:21:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:39,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:21:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:39,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:39,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:39,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:39,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:39,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:39,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:21:39,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:39,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:21:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 23:21:39,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270541924] [2020-10-13 23:21:39,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:39,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:21:39,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744297979] [2020-10-13 23:21:39,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:21:39,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:39,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:21:39,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:21:39,212 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 12 states. [2020-10-13 23:21:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:39,317 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2020-10-13 23:21:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:21:39,317 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-10-13 23:21:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:39,319 INFO L225 Difference]: With dead ends: 162 [2020-10-13 23:21:39,319 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 23:21:39,320 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 [2020-10-13 23:21:39,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 23:21:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 23:21:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 23:21:39,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 23:21:39,325 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-13 23:21:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:39,326 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 23:21:39,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:21:39,326 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 23:21:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 23:21:39,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:39,327 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:21:39,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:21:39,327 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:39,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1518881943, now seen corresponding path program 33 times [2020-10-13 23:21:39,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:39,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854369885] [2020-10-13 23:21:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:39,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:39,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:39,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:44,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 23:21:44,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:44,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:21:44,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:44,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:44,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:21:44,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 23:21:44,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:21:44,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:44,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:44,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:44,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:44,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:44,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:44,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:44,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:21:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:44,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:44,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:44,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:44,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 23:21:44,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:44,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:44,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:21:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:44,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:44,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:44,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:44,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 23:21:44,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:44,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:44,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 23:21:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:44,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:44,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 23:21:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:44,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:21:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2020-10-13 23:21:44,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854369885] [2020-10-13 23:21:44,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:44,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:21:44,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527427272] [2020-10-13 23:21:44,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:21:44,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:44,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:21:44,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:21:44,688 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-13 23:21:44,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:44,875 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-13 23:21:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:21:44,876 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-13 23:21:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:44,878 INFO L225 Difference]: With dead ends: 133 [2020-10-13 23:21:44,878 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:21:44,879 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 [2020-10-13 23:21:44,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:21:44,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 23:21:44,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:21:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 23:21:44,885 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-13 23:21:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:44,885 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 23:21:44,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:21:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 23:21:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 23:21:44,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:44,887 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 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] [2020-10-13 23:21:44,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:21:44,887 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:44,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:44,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1433518951, now seen corresponding path program 34 times [2020-10-13 23:21:44,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:44,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671488342] [2020-10-13 23:21:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:44,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:49,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:49,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 23:21:49,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:21:49,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:49,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:21:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 23:21:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:21:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:49,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:49,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:49,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:49,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:49,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:49,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:21:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:49,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:49,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:49,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:49,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 23:21:49,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:49,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:21:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:21:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:21:49,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:50,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:21:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:50,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:50,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:50,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 23:21:50,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:50,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:21:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:21:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:50,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:50,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:21:50,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 23:21:50,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:50,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:21:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:50,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:21:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2020-10-13 23:21:50,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671488342] [2020-10-13 23:21:50,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:50,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:21:50,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894575979] [2020-10-13 23:21:50,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:21:50,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:50,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:21:50,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:21:50,256 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 17 states. [2020-10-13 23:21:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:50,685 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2020-10-13 23:21:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:21:50,685 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 156 [2020-10-13 23:21:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:50,686 INFO L225 Difference]: With dead ends: 167 [2020-10-13 23:21:50,686 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 23:21:50,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:21:50,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 23:21:50,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 23:21:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 23:21:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 23:21:50,700 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 156 [2020-10-13 23:21:50,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:50,700 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 23:21:50,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:21:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 23:21:50,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 23:21:50,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:50,703 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:21:50,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:21:50,703 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:50,704 INFO L82 PathProgramCache]: Analyzing trace with hash -834942907, now seen corresponding path program 35 times [2020-10-13 23:21:50,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:50,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254342472] [2020-10-13 23:21:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:50,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:55,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 23:21:55,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:55,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:21:55,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:55,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:21:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:21:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:21:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:55,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:55,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:55,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:55,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:55,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:55,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:55,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:55,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:21:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:55,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:21:55,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 23:21:55,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:55,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:21:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:55,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:21:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:21:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:55,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:56,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:56,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:21:56,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 23:21:56,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:56,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:21:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:56,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:21:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:21:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:56,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:56,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:56,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:21:56,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 23:21:56,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:56,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:21:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:56,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2140 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 23:21:56,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254342472] [2020-10-13 23:21:56,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:56,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:21:56,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484654808] [2020-10-13 23:21:56,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:21:56,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:56,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:21:56,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:21:56,166 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 13 states. [2020-10-13 23:21:56,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:56,291 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2020-10-13 23:21:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:21:56,292 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-10-13 23:21:56,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:56,293 INFO L225 Difference]: With dead ends: 172 [2020-10-13 23:21:56,293 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 23:21:56,294 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 [2020-10-13 23:21:56,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 23:21:56,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 23:21:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 23:21:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 23:21:56,300 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 162 [2020-10-13 23:21:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:56,300 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 23:21:56,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:21:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 23:21:56,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 23:21:56,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:56,302 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:21:56,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:21:56,302 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:56,302 INFO L82 PathProgramCache]: Analyzing trace with hash 380122151, now seen corresponding path program 36 times [2020-10-13 23:21:56,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:56,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161808638] [2020-10-13 23:21:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:56,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:56,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:56,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:56,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:01,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:01,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 23:22:01,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:22:01,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:22:01,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:01,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:22:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 23:22:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:22:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:01,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:01,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:01,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:01,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:01,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:22:01,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:01,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:22:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:01,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:01,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:22:01,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 23:22:01,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:01,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:01,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 23:22:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:01,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:01,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:01,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:22:01,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:01,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 23:22:01,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:01,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:01,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:22:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:22:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:22:01,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:01,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:22:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:01,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:01,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:22:01,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:01,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 23:22:01,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:01,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:01,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:01,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:22:01,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:01,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2020-10-13 23:22:01,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161808638] [2020-10-13 23:22:01,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:22:01,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:22:01,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930152666] [2020-10-13 23:22:01,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:22:01,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:01,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:22:01,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:22:01,723 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-13 23:22:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:02,202 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-10-13 23:22:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:22:02,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-13 23:22:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:02,204 INFO L225 Difference]: With dead ends: 173 [2020-10-13 23:22:02,205 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 23:22:02,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:22:02,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 23:22:02,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 23:22:02,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:22:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 23:22:02,212 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-13 23:22:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:02,212 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 23:22:02,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:22:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 23:22:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 23:22:02,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:02,214 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 23:22:02,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:22:02,215 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:02,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:02,215 INFO L82 PathProgramCache]: Analyzing trace with hash -904763131, now seen corresponding path program 37 times [2020-10-13 23:22:02,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:02,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668695002] [2020-10-13 23:22:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:02,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:07,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 23:22:07,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:22:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 23:22:07,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:07,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:22:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 23:22:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:22:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:07,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:07,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:07,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:07,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:07,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:22:07,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:07,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:07,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:07,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:07,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:22:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:07,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:07,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:07,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:07,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 23:22:07,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:07,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:22:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:07,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:07,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:07,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 23:22:07,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:07,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:07,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:07,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:07,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:22:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:07,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:07,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:07,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:07,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 23:22:07,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:07,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:07,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:07,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:22:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:07,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2020-10-13 23:22:07,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668695002] [2020-10-13 23:22:07,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:22:07,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:22:07,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784732796] [2020-10-13 23:22:07,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:22:07,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:07,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:22:07,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:22:07,697 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 18 states. [2020-10-13 23:22:07,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:07,833 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-13 23:22:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:22:07,834 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 170 [2020-10-13 23:22:07,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:07,836 INFO L225 Difference]: With dead ends: 145 [2020-10-13 23:22:07,836 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 23:22:07,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:22:07,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 23:22:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 23:22:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 23:22:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 23:22:07,842 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-13 23:22:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:07,843 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 23:22:07,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:22:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 23:22:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 23:22:07,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:07,844 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 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] [2020-10-13 23:22:07,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:22:07,844 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash -392261117, now seen corresponding path program 38 times [2020-10-13 23:22:07,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:07,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256063732] [2020-10-13 23:22:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:07,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:08,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:12,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:12,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 23:22:12,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:22:12,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:22:12,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:12,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:22:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:22:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:22:12,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:12,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:12,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:12,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:22:12,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:12,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:22:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:13,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:13,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:13,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:13,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 23:22:13,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:13,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:22:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:13,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:22:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:13,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:13,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:13,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:13,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 23:22:13,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:13,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:22:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:13,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:22:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:13,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:13,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:13,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:13,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 23:22:13,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:13,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:22:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:13,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 23:22:13,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256063732] [2020-10-13 23:22:13,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:22:13,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:22:13,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893839722] [2020-10-13 23:22:13,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:22:13,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:13,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:22:13,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:22:13,246 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 14 states. [2020-10-13 23:22:13,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:13,391 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2020-10-13 23:22:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:22:13,391 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-13 23:22:13,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:13,393 INFO L225 Difference]: With dead ends: 182 [2020-10-13 23:22:13,393 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 23:22:13,393 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 [2020-10-13 23:22:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 23:22:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 23:22:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 23:22:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 23:22:13,399 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-13 23:22:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:13,399 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 23:22:13,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:22:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 23:22:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 23:22:13,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:13,403 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:22:13,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:22:13,404 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:13,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1566110875, now seen corresponding path program 39 times [2020-10-13 23:22:13,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:13,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905824210] [2020-10-13 23:22:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:13,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:13,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:13,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:13,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:18,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:18,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 23:22:18,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:22:18,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 23:22:18,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:18,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:18,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:22:18,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 23:22:18,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:22:18,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:18,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:18,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:18,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:18,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:18,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:18,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:22:18,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:18,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:18,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:18,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:18,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:18,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:18,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:22:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:18,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:18,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:18,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 23:22:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:18,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:18,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:22:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:18,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:18,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:18,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:18,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 23:22:18,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:18,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:18,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:22:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 23:22:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:18,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:18,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:18,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:18,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 23:22:18,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:18,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:18,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:18,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:22:18,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:18,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2251 trivial. 0 not checked. [2020-10-13 23:22:18,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905824210] [2020-10-13 23:22:18,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:22:18,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:22:18,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190382272] [2020-10-13 23:22:18,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:22:18,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:18,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:22:18,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:22:18,889 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-13 23:22:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:19,115 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2020-10-13 23:22:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:22:19,115 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-13 23:22:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:19,117 INFO L225 Difference]: With dead ends: 149 [2020-10-13 23:22:19,117 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:22:19,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:22:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:22:19,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 23:22:19,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:22:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 23:22:19,125 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-13 23:22:19,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:19,127 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 23:22:19,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:22:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 23:22:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 23:22:19,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:19,129 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 16, 16, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:22:19,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:22:19,130 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:19,130 INFO L82 PathProgramCache]: Analyzing trace with hash -292283293, now seen corresponding path program 40 times [2020-10-13 23:22:19,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:19,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665575999] [2020-10-13 23:22:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:19,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:19,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:24,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 23:22:24,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:22:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:22:24,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:24,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:22:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 23:22:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:22:24,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:24,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:24,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:24,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:24,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:22:24,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:24,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:24,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:22:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:24,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:24,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:24,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 23:22:24,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:24,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:24,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:24,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:24,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:24,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:22:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:24,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:24,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:24,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 23:22:24,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:24,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:24,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:24,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 23:22:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:24,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:24,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 23:22:24,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:24,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:22:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2507 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 2251 trivial. 0 not checked. [2020-10-13 23:22:24,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665575999] [2020-10-13 23:22:24,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:22:24,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:22:24,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678585827] [2020-10-13 23:22:24,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:22:24,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:24,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:22:24,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:22:24,585 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 20 states. [2020-10-13 23:22:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:24,783 INFO L93 Difference]: Finished difference Result 151 states and 156 transitions. [2020-10-13 23:22:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:22:24,783 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-10-13 23:22:24,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:24,785 INFO L225 Difference]: With dead ends: 151 [2020-10-13 23:22:24,785 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 23:22:24,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:22:24,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 23:22:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 23:22:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 23:22:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 23:22:24,790 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 176 [2020-10-13 23:22:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:24,790 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 23:22:24,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:22:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 23:22:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 23:22:24,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:24,791 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 17, 17, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:22:24,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:22:24,792 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:24,792 INFO L82 PathProgramCache]: Analyzing trace with hash -209656351, now seen corresponding path program 41 times [2020-10-13 23:22:24,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:24,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056843239] [2020-10-13 23:22:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:24,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:29,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:29,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 23:22:29,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:22:29,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:22:29,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:29,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:29,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:22:29,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 23:22:29,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:22:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:29,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:29,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:29,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:29,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:29,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:29,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:22:29,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:29,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:29,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:29,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:29,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:29,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:29,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:22:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:29,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:29,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:29,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:29,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:29,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 23:22:29,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:29,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:29,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:22:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:29,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:29,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:29,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 23:22:29,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:29,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:22:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:22:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:22:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:22:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:30,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:30,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:30,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 23:22:30,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:30,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:22:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 484 proven. 709 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2020-10-13 23:22:30,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056843239] [2020-10-13 23:22:30,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:22:30,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:22:30,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488380204] [2020-10-13 23:22:30,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:22:30,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:30,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:22:30,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:22:30,304 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 19 states. [2020-10-13 23:22:30,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:30,827 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2020-10-13 23:22:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:22:30,828 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 178 [2020-10-13 23:22:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:30,829 INFO L225 Difference]: With dead ends: 191 [2020-10-13 23:22:30,829 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 23:22:30,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:22:30,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 23:22:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 23:22:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 23:22:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 23:22:30,837 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 178 [2020-10-13 23:22:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:30,837 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 23:22:30,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:22:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 23:22:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 23:22:30,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:30,838 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 17, 17, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:22:30,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:22:30,839 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:30,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:30,839 INFO L82 PathProgramCache]: Analyzing trace with hash -330611649, now seen corresponding path program 42 times [2020-10-13 23:22:30,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:30,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620296754] [2020-10-13 23:22:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:30,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:30,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:30,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:31,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:35,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:35,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 23:22:35,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:22:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 23:22:35,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:35,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:35,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:22:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 23:22:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:22:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:35,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:35,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:35,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:22:35,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:35,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:35,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:35,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:22:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:35,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:35,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:35,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:22:35,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 23:22:35,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:35,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:35,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:22:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:36,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:36,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:22:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 23:22:36,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:36,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:22:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:22:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:22:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:36,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 23:22:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:36,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:36,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:36,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:22:36,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:36,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 23:22:36,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:36,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:36,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:36,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:22:36,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:36,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:22:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2825 backedges. 548 proven. 804 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2020-10-13 23:22:36,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620296754] [2020-10-13 23:22:36,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:22:36,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:22:36,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336803534] [2020-10-13 23:22:36,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:22:36,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:36,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:22:36,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:22:36,509 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 20 states. [2020-10-13 23:22:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:37,060 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2020-10-13 23:22:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:22:37,061 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 184 [2020-10-13 23:22:37,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:37,062 INFO L225 Difference]: With dead ends: 195 [2020-10-13 23:22:37,062 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 23:22:37,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:22:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 23:22:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 23:22:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 23:22:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-13 23:22:37,068 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 184 [2020-10-13 23:22:37,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:37,069 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-13 23:22:37,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:22:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-13 23:22:37,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 23:22:37,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:37,071 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 17, 17, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:22:37,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 23:22:37,071 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:37,072 INFO L82 PathProgramCache]: Analyzing trace with hash -737958883, now seen corresponding path program 43 times [2020-10-13 23:22:37,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:37,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781107628] [2020-10-13 23:22:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:37,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:37,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:37,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking...