/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/loops-crafted-1/mono-crafted_7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:03:31,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:03:31,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:03:31,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:03:31,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:03:31,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:03:31,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:03:31,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:03:31,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:03:31,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:03:31,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:03:31,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:03:31,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:03:31,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:03:31,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:03:31,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:03:31,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:03:31,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:03:31,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:03:31,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:03:31,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:03:31,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:03:31,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:03:31,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:03:31,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:03:31,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:03:31,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:03:31,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:03:31,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:03:31,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:03:31,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:03:31,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:03:31,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:03:31,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:03:31,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:03:31,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:03:31,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:03:31,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:03:31,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:03:31,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:03:31,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:03:31,657 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 [2020-10-15 00:03:31,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:03:31,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:03:31,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:03:31,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:03:31,704 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:03:31,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:03:31,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:03:31,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:03:31,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:03:31,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:03:31,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:03:31,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:03:31,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:03:31,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:03:31,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:03:31,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:03:31,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:03:31,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:03:31,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:03:31,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:03:31,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:03:31,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:03:31,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:03:31,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:03:31,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:03:31,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:03:31,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:03:31,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:03:31,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:03:31,710 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:03:32,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:03:32,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:03:32,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:03:32,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:03:32,042 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:03:32,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c [2020-10-15 00:03:32,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/352558b6a/bca3f7f46b154802aae808ea31f62ce2/FLAGb76fccba9 [2020-10-15 00:03:32,572 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:03:32,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c [2020-10-15 00:03:32,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/352558b6a/bca3f7f46b154802aae808ea31f62ce2/FLAGb76fccba9 [2020-10-15 00:03:32,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/352558b6a/bca3f7f46b154802aae808ea31f62ce2 [2020-10-15 00:03:32,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:03:32,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:03:32,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:03:32,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:03:32,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:03:33,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:32" (1/1) ... [2020-10-15 00:03:33,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77431c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33, skipping insertion in model container [2020-10-15 00:03:33,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:32" (1/1) ... [2020-10-15 00:03:33,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:03:33,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:03:33,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:03:33,214 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:03:33,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:03:33,240 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:03:33,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33 WrapperNode [2020-10-15 00:03:33,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:03:33,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:03:33,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:03:33,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:03:33,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33" (1/1) ... [2020-10-15 00:03:33,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33" (1/1) ... [2020-10-15 00:03:33,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33" (1/1) ... [2020-10-15 00:03:33,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33" (1/1) ... [2020-10-15 00:03:33,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33" (1/1) ... [2020-10-15 00:03:33,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33" (1/1) ... [2020-10-15 00:03:33,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33" (1/1) ... [2020-10-15 00:03:33,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:03:33,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:03:33,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:03:33,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:03:33,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33" (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 [2020-10-15 00:03:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:03:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:03:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:03:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:03:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:03:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:03:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:03:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:03:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:03:33,585 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:03:33,586 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-15 00:03:33,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:33 BoogieIcfgContainer [2020-10-15 00:03:33,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:03:33,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:03:33,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:03:33,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:03:33,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:03:32" (1/3) ... [2020-10-15 00:03:33,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a76a32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:33, skipping insertion in model container [2020-10-15 00:03:33,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33" (2/3) ... [2020-10-15 00:03:33,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a76a32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:33, skipping insertion in model container [2020-10-15 00:03:33,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:33" (3/3) ... [2020-10-15 00:03:33,598 INFO L109 eAbstractionObserver]: Analyzing ICFG mono-crafted_7.c [2020-10-15 00:03:33,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:03:33,616 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:03:33,631 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:03:33,670 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:03:33,670 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:03:33,671 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:03:33,671 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:03:33,671 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:03:33,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:03:33,672 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:03:33,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:03:33,697 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-15 00:03:33,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 00:03:33,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:33,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:33,706 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:33,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:33,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1762590288, now seen corresponding path program 1 times [2020-10-15 00:03:33,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:33,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896018721] [2020-10-15 00:03:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:33,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:33,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:33,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:33,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:33,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:03:33,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:03:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-15 00:03:33,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:33,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:03:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:03:33,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:03:34,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:34,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:34,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:34,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:34,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:03:34,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:34,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:34,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:34,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:34,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896018721] [2020-10-15 00:03:34,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:03:34,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:03:34,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192893007] [2020-10-15 00:03:34,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:03:34,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:34,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:03:34,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:03:34,050 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-10-15 00:03:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:34,151 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2020-10-15 00:03:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:03:34,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-15 00:03:34,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:34,163 INFO L225 Difference]: With dead ends: 44 [2020-10-15 00:03:34,164 INFO L226 Difference]: Without dead ends: 16 [2020-10-15 00:03:34,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:03:34,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-15 00:03:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-15 00:03:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-15 00:03:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2020-10-15 00:03:34,202 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2020-10-15 00:03:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:34,202 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-10-15 00:03:34,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:03:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2020-10-15 00:03:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 00:03:34,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:34,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:34,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:03:34,204 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:34,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:34,205 INFO L82 PathProgramCache]: Analyzing trace with hash 830194858, now seen corresponding path program 1 times [2020-10-15 00:03:34,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:34,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667762118] [2020-10-15 00:03:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:34,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:34,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:03:34,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-15 00:03:34,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:34,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:03:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 00:03:34,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:34,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:34,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:34,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:03:34,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:34,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:34,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667762118] [2020-10-15 00:03:34,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:34,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 00:03:34,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878669413] [2020-10-15 00:03:34,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:03:34,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:34,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:03:34,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:03:34,397 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 4 states. [2020-10-15 00:03:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:34,417 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-10-15 00:03:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 00:03:34,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 00:03:34,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:34,419 INFO L225 Difference]: With dead ends: 22 [2020-10-15 00:03:34,419 INFO L226 Difference]: Without dead ends: 17 [2020-10-15 00:03:34,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:03:34,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-15 00:03:34,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-10-15 00:03:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-15 00:03:34,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-10-15 00:03:34,426 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2020-10-15 00:03:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:34,426 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-10-15 00:03:34,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:03:34,427 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-10-15 00:03:34,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 00:03:34,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:34,428 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:34,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:03:34,428 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:34,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:34,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1774582, now seen corresponding path program 2 times [2020-10-15 00:03:34,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:34,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135817956] [2020-10-15 00:03:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:34,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:34,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:03:34,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:34,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 00:03:34,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:34,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:03:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:03:34,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:34,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:34,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:34,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:34,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:34,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:34,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:34,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:34,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:34,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:34,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135817956] [2020-10-15 00:03:34,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:34,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:03:34,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297203776] [2020-10-15 00:03:34,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:03:34,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:34,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:03:34,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:03:34,528 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2020-10-15 00:03:34,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:34,553 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-10-15 00:03:34,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:03:34,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 00:03:34,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:34,555 INFO L225 Difference]: With dead ends: 21 [2020-10-15 00:03:34,555 INFO L226 Difference]: Without dead ends: 16 [2020-10-15 00:03:34,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:03:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-15 00:03:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-15 00:03:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-15 00:03:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-15 00:03:34,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2020-10-15 00:03:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:34,561 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-15 00:03:34,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:03:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-10-15 00:03:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 00:03:34,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:34,562 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:34,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:03:34,563 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:34,563 INFO L82 PathProgramCache]: Analyzing trace with hash 90549802, now seen corresponding path program 3 times [2020-10-15 00:03:34,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:34,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225846231] [2020-10-15 00:03:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:34,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:34,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:03:34,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:34,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-15 00:03:34,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:34,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:03:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:03:34,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:34,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:34,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:34,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:34,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:34,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:34,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-15 00:03:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:34,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225846231] [2020-10-15 00:03:34,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:34,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:03:34,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333906534] [2020-10-15 00:03:34,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:03:34,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:34,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:03:34,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:03:34,716 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-10-15 00:03:34,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:34,741 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-10-15 00:03:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:03:34,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-15 00:03:34,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:34,743 INFO L225 Difference]: With dead ends: 22 [2020-10-15 00:03:34,743 INFO L226 Difference]: Without dead ends: 17 [2020-10-15 00:03:34,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:03:34,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-15 00:03:34,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-15 00:03:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-15 00:03:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-15 00:03:34,748 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2020-10-15 00:03:34,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:34,748 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-15 00:03:34,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:03:34,748 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-15 00:03:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 00:03:34,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:34,749 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:34,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:03:34,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:34,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:34,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1452385674, now seen corresponding path program 4 times [2020-10-15 00:03:34,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:34,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761848330] [2020-10-15 00:03:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:34,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:34,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:03:34,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:34,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-15 00:03:34,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:34,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:03:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:03:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:34,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:34,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:34,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:34,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:34,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:34,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:34,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761848330] [2020-10-15 00:03:34,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:34,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:03:34,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119284461] [2020-10-15 00:03:34,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:03:34,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:34,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:03:34,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:03:34,941 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 7 states. [2020-10-15 00:03:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:34,968 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-10-15 00:03:34,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:03:34,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 00:03:34,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:34,971 INFO L225 Difference]: With dead ends: 23 [2020-10-15 00:03:34,971 INFO L226 Difference]: Without dead ends: 18 [2020-10-15 00:03:34,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:03:34,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-15 00:03:34,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-15 00:03:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-15 00:03:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-15 00:03:34,975 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2020-10-15 00:03:34,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:34,976 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-15 00:03:34,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:03:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-15 00:03:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 00:03:34,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:34,977 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:34,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:03:34,977 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2038745174, now seen corresponding path program 5 times [2020-10-15 00:03:34,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:34,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428717781] [2020-10-15 00:03:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:34,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:03:35,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:35,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 00:03:35,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:03:35,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:35,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:03:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:35,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:35,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:35,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:35,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:35,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428717781] [2020-10-15 00:03:35,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:35,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:03:35,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959754009] [2020-10-15 00:03:35,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:03:35,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:35,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:03:35,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:03:35,111 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 8 states. [2020-10-15 00:03:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:35,131 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-10-15 00:03:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:03:35,132 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-15 00:03:35,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:35,133 INFO L225 Difference]: With dead ends: 24 [2020-10-15 00:03:35,133 INFO L226 Difference]: Without dead ends: 19 [2020-10-15 00:03:35,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:03:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-15 00:03:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-15 00:03:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-15 00:03:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-15 00:03:35,138 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2020-10-15 00:03:35,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:35,138 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-15 00:03:35,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:03:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-15 00:03:35,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 00:03:35,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:35,140 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:35,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:03:35,140 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:35,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:35,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1258946806, now seen corresponding path program 6 times [2020-10-15 00:03:35,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:35,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659360307] [2020-10-15 00:03:35,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:35,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:03:35,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-15 00:03:35,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:03:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:03:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:35,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:35,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:35,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:35,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:35,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:35,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:35,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659360307] [2020-10-15 00:03:35,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:35,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:03:35,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285151187] [2020-10-15 00:03:35,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:03:35,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:35,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:03:35,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:03:35,293 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 9 states. [2020-10-15 00:03:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:35,316 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-10-15 00:03:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:03:35,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-15 00:03:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:35,317 INFO L225 Difference]: With dead ends: 25 [2020-10-15 00:03:35,317 INFO L226 Difference]: Without dead ends: 20 [2020-10-15 00:03:35,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:03:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-15 00:03:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-15 00:03:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-15 00:03:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-15 00:03:35,322 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2020-10-15 00:03:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:35,323 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-15 00:03:35,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:03:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-15 00:03:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 00:03:35,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:35,324 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:35,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:03:35,324 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:35,325 INFO L82 PathProgramCache]: Analyzing trace with hash 408183082, now seen corresponding path program 7 times [2020-10-15 00:03:35,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:35,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529035569] [2020-10-15 00:03:35,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:35,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:03:35,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:35,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-15 00:03:35,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:03:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:03:35,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:35,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:35,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:35,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:35,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:35,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:35,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529035569] [2020-10-15 00:03:35,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:35,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:03:35,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623865694] [2020-10-15 00:03:35,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:03:35,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:35,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:03:35,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:03:35,518 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2020-10-15 00:03:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:35,544 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-10-15 00:03:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:03:35,545 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-15 00:03:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:35,546 INFO L225 Difference]: With dead ends: 26 [2020-10-15 00:03:35,546 INFO L226 Difference]: Without dead ends: 21 [2020-10-15 00:03:35,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:03:35,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-15 00:03:35,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-15 00:03:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-15 00:03:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-15 00:03:35,550 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2020-10-15 00:03:35,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:35,551 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-15 00:03:35,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:03:35,551 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-15 00:03:35,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 00:03:35,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:35,552 INFO L422 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:35,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:03:35,552 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:35,553 INFO L82 PathProgramCache]: Analyzing trace with hash -195688586, now seen corresponding path program 8 times [2020-10-15 00:03:35,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:35,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795402272] [2020-10-15 00:03:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:03:35,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:35,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-15 00:03:35,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:03:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:03:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:35,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:35,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:35,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:35,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:35,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:35,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:35,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795402272] [2020-10-15 00:03:35,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:35,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:03:35,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966358303] [2020-10-15 00:03:35,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:03:35,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:35,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:03:35,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:03:35,770 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 11 states. [2020-10-15 00:03:35,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:35,799 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-10-15 00:03:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:03:35,800 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-10-15 00:03:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:35,801 INFO L225 Difference]: With dead ends: 27 [2020-10-15 00:03:35,801 INFO L226 Difference]: Without dead ends: 22 [2020-10-15 00:03:35,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:03:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-15 00:03:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-15 00:03:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-15 00:03:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-15 00:03:35,806 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-10-15 00:03:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:35,806 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-15 00:03:35,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:03:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-15 00:03:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:03:35,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:35,808 INFO L422 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:35,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:03:35,808 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:35,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:35,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1735841110, now seen corresponding path program 9 times [2020-10-15 00:03:35,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:35,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206244178] [2020-10-15 00:03:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:03:35,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:35,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-15 00:03:35,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:03:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:03:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:36,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:36,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:36,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:36,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:36,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:36,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:36,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:36,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:36,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:36,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:36,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206244178] [2020-10-15 00:03:36,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:36,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:03:36,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412793278] [2020-10-15 00:03:36,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:03:36,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:36,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:03:36,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:03:36,121 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 12 states. [2020-10-15 00:03:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:36,158 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-10-15 00:03:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:03:36,158 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-10-15 00:03:36,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:36,159 INFO L225 Difference]: With dead ends: 28 [2020-10-15 00:03:36,160 INFO L226 Difference]: Without dead ends: 23 [2020-10-15 00:03:36,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:03:36,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-15 00:03:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-15 00:03:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-15 00:03:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-15 00:03:36,164 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2020-10-15 00:03:36,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:36,165 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-15 00:03:36,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:03:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-15 00:03:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 00:03:36,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:36,166 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:36,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:03:36,167 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:36,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:36,167 INFO L82 PathProgramCache]: Analyzing trace with hash 2059038198, now seen corresponding path program 10 times [2020-10-15 00:03:36,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:36,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889164667] [2020-10-15 00:03:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:36,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:36,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:36,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-15 00:03:36,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:36,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-15 00:03:36,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:36,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:03:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:03:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:36,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:36,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:36,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:36,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:36,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:36,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:36,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889164667] [2020-10-15 00:03:36,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:36,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:03:36,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712591728] [2020-10-15 00:03:36,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:03:36,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:36,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:03:36,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:03:36,492 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 13 states. [2020-10-15 00:03:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:36,521 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-10-15 00:03:36,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:03:36,522 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-10-15 00:03:36,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:36,523 INFO L225 Difference]: With dead ends: 29 [2020-10-15 00:03:36,523 INFO L226 Difference]: Without dead ends: 24 [2020-10-15 00:03:36,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:03:36,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-15 00:03:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-15 00:03:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-15 00:03:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-15 00:03:36,527 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2020-10-15 00:03:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:36,527 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-15 00:03:36,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:03:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-15 00:03:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 00:03:36,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:36,528 INFO L422 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:36,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:03:36,529 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash -558787542, now seen corresponding path program 11 times [2020-10-15 00:03:36,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:36,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951230413] [2020-10-15 00:03:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:36,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:36,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:36,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:36,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:03:36,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-15 00:03:36,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:36,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:03:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:03:36,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:36,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:36,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:36,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:36,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:36,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:36,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:36,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:36,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951230413] [2020-10-15 00:03:36,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:36,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:03:36,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455972346] [2020-10-15 00:03:36,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:03:36,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:36,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:03:36,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:03:36,819 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 14 states. [2020-10-15 00:03:36,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:36,850 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-10-15 00:03:36,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:03:36,851 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-10-15 00:03:36,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:36,852 INFO L225 Difference]: With dead ends: 30 [2020-10-15 00:03:36,852 INFO L226 Difference]: Without dead ends: 25 [2020-10-15 00:03:36,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:03:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-15 00:03:36,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-15 00:03:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-15 00:03:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-15 00:03:36,856 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-10-15 00:03:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:36,857 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-15 00:03:36,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:03:36,857 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-15 00:03:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 00:03:36,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:36,858 INFO L422 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:36,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:03:36,858 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:36,859 INFO L82 PathProgramCache]: Analyzing trace with hash -107006858, now seen corresponding path program 12 times [2020-10-15 00:03:36,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:36,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128300136] [2020-10-15 00:03:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:36,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:37,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:37,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:03:37,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-15 00:03:37,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:37,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:03:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:03:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:37,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:37,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:37,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:37,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:37,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:37,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:37,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:37,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:37,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128300136] [2020-10-15 00:03:37,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:37,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:03:37,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208111429] [2020-10-15 00:03:37,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:03:37,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:37,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:03:37,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:03:37,188 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 15 states. [2020-10-15 00:03:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:37,217 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-10-15 00:03:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:03:37,218 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2020-10-15 00:03:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:37,218 INFO L225 Difference]: With dead ends: 31 [2020-10-15 00:03:37,218 INFO L226 Difference]: Without dead ends: 26 [2020-10-15 00:03:37,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:03:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-15 00:03:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-15 00:03:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-15 00:03:37,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-15 00:03:37,222 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 23 [2020-10-15 00:03:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:37,223 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-15 00:03:37,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:03:37,223 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-15 00:03:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 00:03:37,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:37,224 INFO L422 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:37,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:03:37,224 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:37,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:37,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1013292458, now seen corresponding path program 13 times [2020-10-15 00:03:37,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:37,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600922086] [2020-10-15 00:03:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:37,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:37,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:37,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:03:37,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:37,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-15 00:03:37,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:37,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:03:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:03:37,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:37,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:37,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:37,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:37,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:37,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:37,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600922086] [2020-10-15 00:03:37,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:37,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:03:37,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969284391] [2020-10-15 00:03:37,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:03:37,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:37,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:03:37,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:03:37,566 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 16 states. [2020-10-15 00:03:37,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:37,598 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-10-15 00:03:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:03:37,599 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 24 [2020-10-15 00:03:37,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:37,599 INFO L225 Difference]: With dead ends: 32 [2020-10-15 00:03:37,599 INFO L226 Difference]: Without dead ends: 27 [2020-10-15 00:03:37,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:03:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-15 00:03:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-15 00:03:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-15 00:03:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-15 00:03:37,603 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2020-10-15 00:03:37,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:37,604 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-15 00:03:37,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:03:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-15 00:03:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 00:03:37,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:37,605 INFO L422 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:37,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:03:37,606 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:37,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1382832886, now seen corresponding path program 14 times [2020-10-15 00:03:37,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:37,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329610480] [2020-10-15 00:03:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:37,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:37,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:37,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:37,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 00:03:37,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:37,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-15 00:03:37,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:37,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:03:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:03:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:38,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:38,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:38,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:38,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:38,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:38,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:38,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:38,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:38,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:38,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329610480] [2020-10-15 00:03:38,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:38,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:03:38,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697345921] [2020-10-15 00:03:38,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:03:38,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:38,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:03:38,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:03:38,068 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 17 states. [2020-10-15 00:03:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:38,113 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-10-15 00:03:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:03:38,114 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-15 00:03:38,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:38,115 INFO L225 Difference]: With dead ends: 33 [2020-10-15 00:03:38,115 INFO L226 Difference]: Without dead ends: 28 [2020-10-15 00:03:38,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:03:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-15 00:03:38,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-15 00:03:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-15 00:03:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-15 00:03:38,122 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 25 [2020-10-15 00:03:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:38,125 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-15 00:03:38,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:03:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-15 00:03:38,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-15 00:03:38,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:38,126 INFO L422 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:38,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:03:38,127 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:38,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:38,127 INFO L82 PathProgramCache]: Analyzing trace with hash -46315734, now seen corresponding path program 15 times [2020-10-15 00:03:38,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:38,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763696110] [2020-10-15 00:03:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:38,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:38,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:03:38,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:38,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-15 00:03:38,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:38,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:03:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:03:38,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:38,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:38,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:38,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:38,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:38,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:38,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:38,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:38,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763696110] [2020-10-15 00:03:38,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:38,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:03:38,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405926625] [2020-10-15 00:03:38,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:03:38,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:38,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:03:38,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:03:38,623 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 18 states. [2020-10-15 00:03:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:38,662 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-15 00:03:38,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:03:38,663 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-10-15 00:03:38,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:38,663 INFO L225 Difference]: With dead ends: 34 [2020-10-15 00:03:38,663 INFO L226 Difference]: Without dead ends: 29 [2020-10-15 00:03:38,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:03:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-15 00:03:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-15 00:03:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-15 00:03:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-15 00:03:38,667 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2020-10-15 00:03:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:38,668 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-15 00:03:38,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:03:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-15 00:03:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 00:03:38,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:38,669 INFO L422 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:38,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:03:38,669 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:38,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1400249994, now seen corresponding path program 16 times [2020-10-15 00:03:38,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:38,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753424671] [2020-10-15 00:03:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:38,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:38,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:38,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:38,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:03:38,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:38,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-15 00:03:38,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:38,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:03:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:03:38,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:39,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:39,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:39,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:39,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:39,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:39,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:39,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:39,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753424671] [2020-10-15 00:03:39,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:39,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 00:03:39,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349067989] [2020-10-15 00:03:39,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:03:39,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:39,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:03:39,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:03:39,155 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 19 states. [2020-10-15 00:03:39,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:39,205 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-10-15 00:03:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:03:39,206 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 27 [2020-10-15 00:03:39,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:39,207 INFO L225 Difference]: With dead ends: 35 [2020-10-15 00:03:39,207 INFO L226 Difference]: Without dead ends: 30 [2020-10-15 00:03:39,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:03:39,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-15 00:03:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-15 00:03:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-15 00:03:39,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-15 00:03:39,211 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 27 [2020-10-15 00:03:39,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:39,212 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-15 00:03:39,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:03:39,212 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-15 00:03:39,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 00:03:39,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:39,213 INFO L422 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:39,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:03:39,213 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:39,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:39,213 INFO L82 PathProgramCache]: Analyzing trace with hash -422539094, now seen corresponding path program 17 times [2020-10-15 00:03:39,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:39,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528887143] [2020-10-15 00:03:39,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:39,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:39,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:39,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:03:39,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-15 00:03:39,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:39,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:03:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:03:39,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:39,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:39,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:39,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:39,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:39,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:39,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:39,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528887143] [2020-10-15 00:03:39,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:39,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:03:39,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712077416] [2020-10-15 00:03:39,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:03:39,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:39,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:03:39,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:03:39,853 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 20 states. [2020-10-15 00:03:39,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:39,889 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-15 00:03:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:03:39,890 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 28 [2020-10-15 00:03:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:39,891 INFO L225 Difference]: With dead ends: 36 [2020-10-15 00:03:39,891 INFO L226 Difference]: Without dead ends: 31 [2020-10-15 00:03:39,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:03:39,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-15 00:03:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-15 00:03:39,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 00:03:39,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-15 00:03:39,895 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2020-10-15 00:03:39,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:39,895 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-15 00:03:39,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:03:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-15 00:03:39,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 00:03:39,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:39,896 INFO L422 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:39,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:03:39,896 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:39,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:39,897 INFO L82 PathProgramCache]: Analyzing trace with hash -178272266, now seen corresponding path program 18 times [2020-10-15 00:03:39,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:39,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561536573] [2020-10-15 00:03:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:40,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:40,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:03:40,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:40,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-15 00:03:40,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:40,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:40,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:03:40,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:40,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:03:40,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:40,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:40,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:40,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:40,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:40,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:40,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561536573] [2020-10-15 00:03:40,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:40,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 00:03:40,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71505357] [2020-10-15 00:03:40,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 00:03:40,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:40,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 00:03:40,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:03:40,538 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 21 states. [2020-10-15 00:03:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:40,573 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-10-15 00:03:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:03:40,574 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 29 [2020-10-15 00:03:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:40,574 INFO L225 Difference]: With dead ends: 37 [2020-10-15 00:03:40,574 INFO L226 Difference]: Without dead ends: 32 [2020-10-15 00:03:40,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:03:40,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-15 00:03:40,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-15 00:03:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-15 00:03:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-15 00:03:40,578 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 29 [2020-10-15 00:03:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:40,579 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-15 00:03:40,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 00:03:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-15 00:03:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 00:03:40,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:40,580 INFO L422 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:40,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:03:40,580 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:40,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1195935190, now seen corresponding path program 19 times [2020-10-15 00:03:40,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:40,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865651150] [2020-10-15 00:03:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:40,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:40,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:03:40,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-15 00:03:40,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:40,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:03:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:03:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:41,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:41,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:41,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:41,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:41,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:41,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:41,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:41,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:41,195 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:41,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865651150] [2020-10-15 00:03:41,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:41,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:03:41,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245032873] [2020-10-15 00:03:41,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:03:41,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:41,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:03:41,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:03:41,198 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 22 states. [2020-10-15 00:03:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:41,253 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-15 00:03:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 00:03:41,254 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 30 [2020-10-15 00:03:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:41,255 INFO L225 Difference]: With dead ends: 38 [2020-10-15 00:03:41,255 INFO L226 Difference]: Without dead ends: 33 [2020-10-15 00:03:41,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:03:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-15 00:03:41,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-15 00:03:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 00:03:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-15 00:03:41,262 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2020-10-15 00:03:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:41,263 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-15 00:03:41,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:03:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-15 00:03:41,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 00:03:41,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:41,265 INFO L422 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:41,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:03:41,265 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:41,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1616252534, now seen corresponding path program 20 times [2020-10-15 00:03:41,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:41,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743836930] [2020-10-15 00:03:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:41,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:41,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:03:41,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:41,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-15 00:03:41,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:41,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:41,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:03:41,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:41,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:03:41,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:41,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:41,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:41,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:41,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:41,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:41,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:41,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:41,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743836930] [2020-10-15 00:03:41,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:41,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 00:03:41,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330416494] [2020-10-15 00:03:41,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 00:03:41,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:41,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 00:03:41,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:03:41,949 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 23 states. [2020-10-15 00:03:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:41,983 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-15 00:03:41,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:03:41,984 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 31 [2020-10-15 00:03:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:41,984 INFO L225 Difference]: With dead ends: 39 [2020-10-15 00:03:41,984 INFO L226 Difference]: Without dead ends: 34 [2020-10-15 00:03:41,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:03:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-15 00:03:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-15 00:03:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-15 00:03:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-15 00:03:41,990 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 31 [2020-10-15 00:03:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:41,990 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-15 00:03:41,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:03:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-15 00:03:41,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 00:03:41,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:41,991 INFO L422 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:41,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:03:41,992 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:41,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1400241238, now seen corresponding path program 21 times [2020-10-15 00:03:41,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:41,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534248906] [2020-10-15 00:03:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:42,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:42,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:42,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:03:42,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-15 00:03:42,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:42,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:03:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:03:42,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:42,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:42,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:42,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:03:42,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:42,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:42,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534248906] [2020-10-15 00:03:42,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:42,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:03:42,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147983672] [2020-10-15 00:03:42,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:03:42,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:42,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:03:42,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:03:42,679 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 24 states. [2020-10-15 00:03:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:42,724 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-15 00:03:42,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:03:42,726 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 32 [2020-10-15 00:03:42,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:42,727 INFO L225 Difference]: With dead ends: 40 [2020-10-15 00:03:42,727 INFO L226 Difference]: Without dead ends: 35 [2020-10-15 00:03:42,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:03:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-15 00:03:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-15 00:03:42,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-15 00:03:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-15 00:03:42,737 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2020-10-15 00:03:42,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:42,739 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-15 00:03:42,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:03:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-15 00:03:42,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-15 00:03:42,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:42,740 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:42,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:03:42,740 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:42,741 INFO L82 PathProgramCache]: Analyzing trace with hash -422267658, now seen corresponding path program 22 times [2020-10-15 00:03:42,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:42,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759003110] [2020-10-15 00:03:42,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:43,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:43,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 00:03:43,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-15 00:03:43,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:43,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:03:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:03:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:43,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:43,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:43,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:43,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:43,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:43,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:43,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759003110] [2020-10-15 00:03:43,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:43,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 00:03:43,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531210521] [2020-10-15 00:03:43,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 00:03:43,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:43,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 00:03:43,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:03:43,455 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 25 states. [2020-10-15 00:03:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:43,500 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-10-15 00:03:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:03:43,501 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 33 [2020-10-15 00:03:43,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:43,502 INFO L225 Difference]: With dead ends: 41 [2020-10-15 00:03:43,502 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 00:03:43,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:03:43,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 00:03:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-15 00:03:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-15 00:03:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-15 00:03:43,507 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 33 [2020-10-15 00:03:43,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:43,508 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-15 00:03:43,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 00:03:43,508 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-15 00:03:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 00:03:43,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:43,509 INFO L422 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:43,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:03:43,510 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:43,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:43,510 INFO L82 PathProgramCache]: Analyzing trace with hash -169857750, now seen corresponding path program 23 times [2020-10-15 00:03:43,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:43,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246597162] [2020-10-15 00:03:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:43,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:43,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:43,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:03:43,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:43,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-15 00:03:43,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:43,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:03:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:03:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:44,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:44,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:44,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:44,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:44,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:44,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:44,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:44,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246597162] [2020-10-15 00:03:44,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:44,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:03:44,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195997194] [2020-10-15 00:03:44,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:03:44,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:44,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:03:44,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:03:44,367 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 26 states. [2020-10-15 00:03:44,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:44,403 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-15 00:03:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 00:03:44,404 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 34 [2020-10-15 00:03:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:44,404 INFO L225 Difference]: With dead ends: 42 [2020-10-15 00:03:44,404 INFO L226 Difference]: Without dead ends: 37 [2020-10-15 00:03:44,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:03:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-15 00:03:44,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-15 00:03:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 00:03:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-15 00:03:44,407 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2020-10-15 00:03:44,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:44,408 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-15 00:03:44,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:03:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-15 00:03:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-15 00:03:44,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:44,409 INFO L422 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:44,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:03:44,411 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:44,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:44,411 INFO L82 PathProgramCache]: Analyzing trace with hash -935085194, now seen corresponding path program 24 times [2020-10-15 00:03:44,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:44,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934479649] [2020-10-15 00:03:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:44,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:44,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:44,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 00:03:44,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:44,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-15 00:03:44,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:44,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:03:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:03:44,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:45,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:45,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:45,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:45,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:45,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:45,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:45,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:45,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934479649] [2020-10-15 00:03:45,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:45,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 00:03:45,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865751167] [2020-10-15 00:03:45,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 00:03:45,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:45,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 00:03:45,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:03:45,210 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 27 states. [2020-10-15 00:03:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:45,263 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-10-15 00:03:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:03:45,264 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 35 [2020-10-15 00:03:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:45,264 INFO L225 Difference]: With dead ends: 43 [2020-10-15 00:03:45,264 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 00:03:45,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:03:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 00:03:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-15 00:03:45,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 00:03:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-15 00:03:45,268 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 35 [2020-10-15 00:03:45,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:45,268 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-15 00:03:45,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 00:03:45,268 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-15 00:03:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 00:03:45,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:45,269 INFO L422 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:45,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:03:45,269 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:45,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1112667818, now seen corresponding path program 25 times [2020-10-15 00:03:45,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:45,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30618947] [2020-10-15 00:03:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:45,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:45,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:45,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:45,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:03:45,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-15 00:03:45,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:45,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:03:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:03:45,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:46,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:46,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:46,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:46,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:46,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:46,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:46,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:46,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30618947] [2020-10-15 00:03:46,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:46,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:03:46,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606753444] [2020-10-15 00:03:46,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:03:46,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:46,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:03:46,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:03:46,094 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 28 states. [2020-10-15 00:03:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:46,144 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-10-15 00:03:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 00:03:46,145 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 36 [2020-10-15 00:03:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:46,146 INFO L225 Difference]: With dead ends: 44 [2020-10-15 00:03:46,146 INFO L226 Difference]: Without dead ends: 39 [2020-10-15 00:03:46,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:03:46,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-15 00:03:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-15 00:03:46,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-15 00:03:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-15 00:03:46,149 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2020-10-15 00:03:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:46,150 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-15 00:03:46,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:03:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-15 00:03:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 00:03:46,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:46,150 INFO L422 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:46,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:03:46,151 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:46,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:46,151 INFO L82 PathProgramCache]: Analyzing trace with hash 168501750, now seen corresponding path program 26 times [2020-10-15 00:03:46,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:46,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800801962] [2020-10-15 00:03:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:46,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:46,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-15 00:03:46,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-15 00:03:46,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:46,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:03:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:03:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:46,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:46,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:46,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:46,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:46,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:46,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:46,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:46,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:46,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:46,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:46,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800801962] [2020-10-15 00:03:46,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:46,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 00:03:46,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612889663] [2020-10-15 00:03:46,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 00:03:46,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:46,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 00:03:46,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:03:46,981 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 29 states. [2020-10-15 00:03:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:47,037 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-10-15 00:03:47,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:03:47,038 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 37 [2020-10-15 00:03:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:47,039 INFO L225 Difference]: With dead ends: 45 [2020-10-15 00:03:47,039 INFO L226 Difference]: Without dead ends: 40 [2020-10-15 00:03:47,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:03:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-15 00:03:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-15 00:03:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 00:03:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-10-15 00:03:47,045 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 37 [2020-10-15 00:03:47,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:47,045 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-10-15 00:03:47,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 00:03:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-10-15 00:03:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 00:03:47,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:47,046 INFO L422 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:47,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:03:47,046 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:47,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:47,046 INFO L82 PathProgramCache]: Analyzing trace with hash 964124714, now seen corresponding path program 27 times [2020-10-15 00:03:47,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:47,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103681446] [2020-10-15 00:03:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:47,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:47,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:03:47,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-15 00:03:47,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:47,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:03:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:03:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:47,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:47,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:47,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:47,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:47,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:47,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:47,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:47,979 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:47,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103681446] [2020-10-15 00:03:47,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:47,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:03:47,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214296569] [2020-10-15 00:03:47,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:03:47,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:47,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:03:47,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:03:47,982 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 30 states. [2020-10-15 00:03:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:48,045 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-10-15 00:03:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:03:48,046 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 38 [2020-10-15 00:03:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:48,047 INFO L225 Difference]: With dead ends: 46 [2020-10-15 00:03:48,047 INFO L226 Difference]: Without dead ends: 41 [2020-10-15 00:03:48,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:03:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-15 00:03:48,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-15 00:03:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-15 00:03:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-15 00:03:48,050 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2020-10-15 00:03:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:48,050 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-15 00:03:48,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:03:48,050 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-15 00:03:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:03:48,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:48,051 INFO L422 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:48,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:03:48,051 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:48,052 INFO L82 PathProgramCache]: Analyzing trace with hash -141367178, now seen corresponding path program 28 times [2020-10-15 00:03:48,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:48,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986258270] [2020-10-15 00:03:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:48,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:48,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:48,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:03:48,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-15 00:03:48,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:48,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:03:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:03:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:49,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:49,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:49,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:49,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:49,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:49,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:49,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:49,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:49,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986258270] [2020-10-15 00:03:49,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:49,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 00:03:49,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627253165] [2020-10-15 00:03:49,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 00:03:49,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:49,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 00:03:49,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:03:49,053 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 31 states. [2020-10-15 00:03:49,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:49,108 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-10-15 00:03:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:03:49,108 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 39 [2020-10-15 00:03:49,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:49,109 INFO L225 Difference]: With dead ends: 47 [2020-10-15 00:03:49,109 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 00:03:49,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:03:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 00:03:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-15 00:03:49,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-15 00:03:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-10-15 00:03:49,112 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 39 [2020-10-15 00:03:49,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:49,113 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-10-15 00:03:49,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 00:03:49,113 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-10-15 00:03:49,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-15 00:03:49,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:49,114 INFO L422 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:49,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:03:49,114 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:49,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash -51877462, now seen corresponding path program 29 times [2020-10-15 00:03:49,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:49,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832061661] [2020-10-15 00:03:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:49,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:49,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:49,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:03:49,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-15 00:03:49,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:49,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:03:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:03:49,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:50,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:50,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:50,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:50,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:50,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:50,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:50,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832061661] [2020-10-15 00:03:50,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:50,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:03:50,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092286135] [2020-10-15 00:03:50,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:03:50,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:50,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:03:50,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:03:50,101 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 32 states. [2020-10-15 00:03:50,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:50,148 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-10-15 00:03:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 00:03:50,148 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 40 [2020-10-15 00:03:50,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:50,149 INFO L225 Difference]: With dead ends: 48 [2020-10-15 00:03:50,149 INFO L226 Difference]: Without dead ends: 43 [2020-10-15 00:03:50,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:03:50,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-15 00:03:50,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-15 00:03:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-15 00:03:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-15 00:03:50,152 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2020-10-15 00:03:50,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:50,153 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-15 00:03:50,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:03:50,153 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-15 00:03:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:03:50,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:50,154 INFO L422 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:50,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:03:50,155 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:50,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:50,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1572663562, now seen corresponding path program 30 times [2020-10-15 00:03:50,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:50,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147869930] [2020-10-15 00:03:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:50,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:50,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:50,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:03:50,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-15 00:03:50,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:50,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 00:03:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:03:50,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:51,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:51,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:51,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:51,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:51,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:51,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:51,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:51,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147869930] [2020-10-15 00:03:51,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:51,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-15 00:03:51,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637102501] [2020-10-15 00:03:51,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 00:03:51,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:51,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 00:03:51,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:03:51,206 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 33 states. [2020-10-15 00:03:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:51,248 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-10-15 00:03:51,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:03:51,248 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 41 [2020-10-15 00:03:51,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:51,249 INFO L225 Difference]: With dead ends: 49 [2020-10-15 00:03:51,249 INFO L226 Difference]: Without dead ends: 44 [2020-10-15 00:03:51,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:03:51,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-15 00:03:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-15 00:03:51,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-15 00:03:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-10-15 00:03:51,253 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 41 [2020-10-15 00:03:51,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:51,253 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-10-15 00:03:51,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-15 00:03:51,253 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-10-15 00:03:51,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:03:51,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:51,254 INFO L422 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:51,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:03:51,254 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:51,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1472392406, now seen corresponding path program 31 times [2020-10-15 00:03:51,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:51,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382795080] [2020-10-15 00:03:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:51,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:51,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:51,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:03:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-15 00:03:51,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:51,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 00:03:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:03:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:52,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:52,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:52,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:52,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:52,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:52,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:52,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:52,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:52,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382795080] [2020-10-15 00:03:52,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:52,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:03:52,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257291552] [2020-10-15 00:03:52,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:03:52,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:52,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:03:52,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:03:52,300 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 34 states. [2020-10-15 00:03:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:52,372 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-10-15 00:03:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 00:03:52,372 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 42 [2020-10-15 00:03:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:52,373 INFO L225 Difference]: With dead ends: 50 [2020-10-15 00:03:52,373 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 00:03:52,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:03:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 00:03:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-15 00:03:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 00:03:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-15 00:03:52,380 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2020-10-15 00:03:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:52,381 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-15 00:03:52,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:03:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-15 00:03:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 00:03:52,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:52,381 INFO L422 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:52,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:03:52,382 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:52,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:52,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1636013430, now seen corresponding path program 32 times [2020-10-15 00:03:52,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:52,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045002084] [2020-10-15 00:03:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:52,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:52,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-15 00:03:52,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:52,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-15 00:03:52,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:52,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:52,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 00:03:52,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:52,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:03:52,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:53,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:53,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:53,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:53,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:53,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:53,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:53,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:53,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045002084] [2020-10-15 00:03:53,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:53,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-15 00:03:53,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710747808] [2020-10-15 00:03:53,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-15 00:03:53,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:53,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-15 00:03:53,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 00:03:53,452 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 35 states. [2020-10-15 00:03:53,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:53,518 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-10-15 00:03:53,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:03:53,518 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 43 [2020-10-15 00:03:53,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:53,519 INFO L225 Difference]: With dead ends: 51 [2020-10-15 00:03:53,519 INFO L226 Difference]: Without dead ends: 46 [2020-10-15 00:03:53,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 00:03:53,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-15 00:03:53,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-15 00:03:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-15 00:03:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-15 00:03:53,522 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 43 [2020-10-15 00:03:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:53,523 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-15 00:03:53,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-15 00:03:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-15 00:03:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 00:03:53,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:53,524 INFO L422 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:53,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:03:53,524 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:53,525 INFO L82 PathProgramCache]: Analyzing trace with hash -787653462, now seen corresponding path program 33 times [2020-10-15 00:03:53,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:53,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210340244] [2020-10-15 00:03:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:53,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:53,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:53,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:03:53,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-15 00:03:53,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:53,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 00:03:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:03:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:54,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:54,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:54,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:54,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:54,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:54,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:54,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210340244] [2020-10-15 00:03:54,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:54,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:03:54,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417920353] [2020-10-15 00:03:54,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:03:54,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:54,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:03:54,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:03:54,715 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 36 states. [2020-10-15 00:03:54,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:54,758 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-10-15 00:03:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 00:03:54,758 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 44 [2020-10-15 00:03:54,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:54,759 INFO L225 Difference]: With dead ends: 52 [2020-10-15 00:03:54,759 INFO L226 Difference]: Without dead ends: 47 [2020-10-15 00:03:54,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:03:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-15 00:03:54,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-15 00:03:54,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-15 00:03:54,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-15 00:03:54,762 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2020-10-15 00:03:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:54,762 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-15 00:03:54,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:03:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-15 00:03:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:03:54,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:54,763 INFO L422 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:54,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:03:54,764 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:54,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1388084214, now seen corresponding path program 34 times [2020-10-15 00:03:54,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:54,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187550880] [2020-10-15 00:03:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:54,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:55,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:55,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 00:03:55,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-15 00:03:55,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:55,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 00:03:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:03:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:55,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:55,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:55,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:55,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:55,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:55,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:55,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:55,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:55,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:55,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:55,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:55,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187550880] [2020-10-15 00:03:55,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:55,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-15 00:03:55,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100686765] [2020-10-15 00:03:55,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-15 00:03:55,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:55,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-15 00:03:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 00:03:55,829 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 37 states. [2020-10-15 00:03:55,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:55,905 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-10-15 00:03:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:03:55,905 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 45 [2020-10-15 00:03:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:55,906 INFO L225 Difference]: With dead ends: 53 [2020-10-15 00:03:55,906 INFO L226 Difference]: Without dead ends: 48 [2020-10-15 00:03:55,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 00:03:55,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-15 00:03:55,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-15 00:03:55,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-15 00:03:55,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-15 00:03:55,909 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 45 [2020-10-15 00:03:55,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:55,910 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-15 00:03:55,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-15 00:03:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-15 00:03:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:03:55,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:55,910 INFO L422 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:55,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:03:55,911 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:55,911 INFO L82 PathProgramCache]: Analyzing trace with hash 116475434, now seen corresponding path program 35 times [2020-10-15 00:03:55,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:55,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309696801] [2020-10-15 00:03:55,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:56,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:56,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:03:56,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-15 00:03:56,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:56,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 00:03:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:03:56,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:57,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:57,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:57,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:57,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:57,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:57,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:57,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:57,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309696801] [2020-10-15 00:03:57,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:57,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:03:57,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110015177] [2020-10-15 00:03:57,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:03:57,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:57,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:03:57,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:03:57,035 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 38 states. [2020-10-15 00:03:57,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:57,100 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-15 00:03:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 00:03:57,102 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 46 [2020-10-15 00:03:57,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:57,102 INFO L225 Difference]: With dead ends: 54 [2020-10-15 00:03:57,102 INFO L226 Difference]: Without dead ends: 49 [2020-10-15 00:03:57,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:03:57,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-15 00:03:57,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-15 00:03:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-15 00:03:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-10-15 00:03:57,106 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2020-10-15 00:03:57,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:57,106 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-10-15 00:03:57,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:03:57,106 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-10-15 00:03:57,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:03:57,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:57,107 INFO L422 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:57,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:03:57,107 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:57,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:57,108 INFO L82 PathProgramCache]: Analyzing trace with hash -648691082, now seen corresponding path program 36 times [2020-10-15 00:03:57,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:57,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011880864] [2020-10-15 00:03:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:57,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:57,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:03:57,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-15 00:03:57,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:57,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-15 00:03:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:03:57,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:58,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:58,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:58,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:58,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:58,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:58,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:58,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:58,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011880864] [2020-10-15 00:03:58,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:58,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-15 00:03:58,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517643160] [2020-10-15 00:03:58,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-15 00:03:58,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:58,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-15 00:03:58,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 00:03:58,316 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 39 states. [2020-10-15 00:03:58,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:58,386 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-10-15 00:03:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 00:03:58,386 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 47 [2020-10-15 00:03:58,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:58,387 INFO L225 Difference]: With dead ends: 55 [2020-10-15 00:03:58,387 INFO L226 Difference]: Without dead ends: 50 [2020-10-15 00:03:58,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 00:03:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-15 00:03:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-15 00:03:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-15 00:03:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-10-15 00:03:58,391 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 47 [2020-10-15 00:03:58,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:58,391 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-10-15 00:03:58,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-15 00:03:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-10-15 00:03:58,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 00:03:58,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:58,392 INFO L422 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:58,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:03:58,392 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:58,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:58,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1400950698, now seen corresponding path program 37 times [2020-10-15 00:03:58,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:58,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966202347] [2020-10-15 00:03:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:58,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:58,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:58,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:58,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 00:03:58,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:58,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-15 00:03:58,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:58,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-15 00:03:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:03:58,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:59,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:59,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:59,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:59,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:59,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:59,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:59,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:59,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:59,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:59,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966202347] [2020-10-15 00:03:59,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:59,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-15 00:03:59,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206761058] [2020-10-15 00:03:59,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-15 00:03:59,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:59,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-15 00:03:59,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:03:59,668 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 40 states. [2020-10-15 00:03:59,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:59,715 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-10-15 00:03:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-15 00:03:59,716 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 48 [2020-10-15 00:03:59,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:59,717 INFO L225 Difference]: With dead ends: 56 [2020-10-15 00:03:59,717 INFO L226 Difference]: Without dead ends: 51 [2020-10-15 00:03:59,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:03:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-15 00:03:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-15 00:03:59,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-15 00:03:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-15 00:03:59,720 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2020-10-15 00:03:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:59,720 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-15 00:03:59,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-15 00:03:59,721 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-15 00:03:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:03:59,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:59,721 INFO L422 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:59,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:03:59,721 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:59,722 INFO L82 PathProgramCache]: Analyzing trace with hash 515336438, now seen corresponding path program 38 times [2020-10-15 00:03:59,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:59,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894610535] [2020-10-15 00:03:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:59,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:59,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:00,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:00,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:04:00,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-15 00:04:00,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:00,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-15 00:04:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:04:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:00,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:00,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:00,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:00,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:01,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:01,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:01,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:01,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:01,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:01,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:01,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:01,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894610535] [2020-10-15 00:04:01,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:01,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-15 00:04:01,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836516902] [2020-10-15 00:04:01,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-15 00:04:01,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:01,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-15 00:04:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 00:04:01,004 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 41 states. [2020-10-15 00:04:01,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:01,068 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-10-15 00:04:01,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-15 00:04:01,072 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 49 [2020-10-15 00:04:01,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:01,073 INFO L225 Difference]: With dead ends: 57 [2020-10-15 00:04:01,073 INFO L226 Difference]: Without dead ends: 52 [2020-10-15 00:04:01,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 00:04:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-15 00:04:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-15 00:04:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 00:04:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-15 00:04:01,079 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 49 [2020-10-15 00:04:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:01,079 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-15 00:04:01,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-15 00:04:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-15 00:04:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:04:01,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:01,080 INFO L422 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:01,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 00:04:01,081 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:01,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:01,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1168901846, now seen corresponding path program 39 times [2020-10-15 00:04:01,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:01,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968793572] [2020-10-15 00:04:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:01,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:01,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:04:01,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-15 00:04:01,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:01,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-15 00:04:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:04:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:02,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:02,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:02,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:02,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:02,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:02,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:02,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:02,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:02,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968793572] [2020-10-15 00:04:02,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:02,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-15 00:04:02,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245338398] [2020-10-15 00:04:02,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-15 00:04:02,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:02,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-15 00:04:02,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:04:02,497 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 42 states. [2020-10-15 00:04:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:02,558 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-10-15 00:04:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-15 00:04:02,559 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 50 [2020-10-15 00:04:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:02,560 INFO L225 Difference]: With dead ends: 58 [2020-10-15 00:04:02,560 INFO L226 Difference]: Without dead ends: 53 [2020-10-15 00:04:02,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:04:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-15 00:04:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-15 00:04:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-15 00:04:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-15 00:04:02,563 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2020-10-15 00:04:02,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:02,564 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-15 00:04:02,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-15 00:04:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-15 00:04:02,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:04:02,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:02,564 INFO L422 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:02,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-15 00:04:02,565 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:02,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:02,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1840681098, now seen corresponding path program 40 times [2020-10-15 00:04:02,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:02,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258924456] [2020-10-15 00:04:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:02,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:02,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:03,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:03,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:04:03,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-15 00:04:03,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:03,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-15 00:04:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:04:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:04,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:04,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:04,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:04,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:04,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:04,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:04,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258924456] [2020-10-15 00:04:04,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:04,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-15 00:04:04,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888454825] [2020-10-15 00:04:04,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-15 00:04:04,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:04,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-15 00:04:04,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 00:04:04,029 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 43 states. [2020-10-15 00:04:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:04,099 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-10-15 00:04:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-15 00:04:04,101 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 51 [2020-10-15 00:04:04,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:04,102 INFO L225 Difference]: With dead ends: 59 [2020-10-15 00:04:04,102 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 00:04:04,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 00:04:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 00:04:04,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-15 00:04:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-15 00:04:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-15 00:04:04,105 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 51 [2020-10-15 00:04:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:04,106 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-15 00:04:04,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-15 00:04:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-15 00:04:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:04:04,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:04,106 INFO L422 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:04,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 00:04:04,107 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:04,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1191001430, now seen corresponding path program 41 times [2020-10-15 00:04:04,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:04,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539641621] [2020-10-15 00:04:04,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:04,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:04,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:04,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:04,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 00:04:04,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:04,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-15 00:04:04,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:04,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:04,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-15 00:04:04,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:04,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:04:04,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:05,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:05,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:05,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:05,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:05,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:05,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:05,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:05,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:05,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539641621] [2020-10-15 00:04:05,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:05,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-15 00:04:05,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948197630] [2020-10-15 00:04:05,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-15 00:04:05,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:05,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-15 00:04:05,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:04:05,694 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 44 states. [2020-10-15 00:04:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:05,769 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-15 00:04:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-15 00:04:05,769 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 52 [2020-10-15 00:04:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:05,770 INFO L225 Difference]: With dead ends: 60 [2020-10-15 00:04:05,770 INFO L226 Difference]: Without dead ends: 55 [2020-10-15 00:04:05,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:04:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-15 00:04:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-15 00:04:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 00:04:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-15 00:04:05,773 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 52 [2020-10-15 00:04:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:05,774 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-15 00:04:05,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-15 00:04:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-15 00:04:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:04:05,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:05,775 INFO L422 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:05,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 00:04:05,775 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:05,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:05,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1769199094, now seen corresponding path program 42 times [2020-10-15 00:04:05,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:05,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218938441] [2020-10-15 00:04:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:05,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:06,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:06,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:04:06,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:06,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-15 00:04:06,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:06,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-15 00:04:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:04:06,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:07,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:07,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:07,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:07,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:07,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:07,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:07,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:07,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218938441] [2020-10-15 00:04:07,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:07,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-15 00:04:07,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414308190] [2020-10-15 00:04:07,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-15 00:04:07,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:07,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-15 00:04:07,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 00:04:07,367 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 45 states. [2020-10-15 00:04:07,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:07,434 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-10-15 00:04:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-15 00:04:07,435 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 53 [2020-10-15 00:04:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:07,436 INFO L225 Difference]: With dead ends: 61 [2020-10-15 00:04:07,436 INFO L226 Difference]: Without dead ends: 56 [2020-10-15 00:04:07,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 00:04:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-15 00:04:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-15 00:04:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-15 00:04:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-15 00:04:07,440 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 53 [2020-10-15 00:04:07,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:07,440 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-15 00:04:07,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-15 00:04:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-15 00:04:07,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:04:07,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:07,441 INFO L422 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:07,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-15 00:04:07,441 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:07,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:07,442 INFO L82 PathProgramCache]: Analyzing trace with hash -953865174, now seen corresponding path program 43 times [2020-10-15 00:04:07,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:07,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159312164] [2020-10-15 00:04:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:07,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:08,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:08,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:04:08,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-15 00:04:08,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:08,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-15 00:04:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:04:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:09,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:09,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:09,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:09,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:09,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:09,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:09,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:09,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159312164] [2020-10-15 00:04:09,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:09,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-15 00:04:09,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885939500] [2020-10-15 00:04:09,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-15 00:04:09,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:09,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-15 00:04:09,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:04:09,131 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 46 states. [2020-10-15 00:04:09,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:09,199 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-10-15 00:04:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-15 00:04:09,199 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 54 [2020-10-15 00:04:09,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:09,200 INFO L225 Difference]: With dead ends: 62 [2020-10-15 00:04:09,200 INFO L226 Difference]: Without dead ends: 57 [2020-10-15 00:04:09,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:04:09,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-15 00:04:09,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-15 00:04:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-15 00:04:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-10-15 00:04:09,204 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 54 [2020-10-15 00:04:09,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:09,205 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-10-15 00:04:09,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-15 00:04:09,205 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-10-15 00:04:09,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:04:09,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:09,206 INFO L422 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:09,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-15 00:04:09,206 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:09,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:09,206 INFO L82 PathProgramCache]: Analyzing trace with hash 530488438, now seen corresponding path program 44 times [2020-10-15 00:04:09,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:09,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122343667] [2020-10-15 00:04:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:09,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 00:04:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-15 00:04:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:09,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-15 00:04:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:04:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:11,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:11,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:11,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:11,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:11,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:11,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:11,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:11,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:11,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122343667] [2020-10-15 00:04:11,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:11,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-15 00:04:11,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027351195] [2020-10-15 00:04:11,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-15 00:04:11,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-15 00:04:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 00:04:11,024 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 47 states. [2020-10-15 00:04:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:11,091 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-10-15 00:04:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-15 00:04:11,092 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 55 [2020-10-15 00:04:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:11,092 INFO L225 Difference]: With dead ends: 63 [2020-10-15 00:04:11,092 INFO L226 Difference]: Without dead ends: 58 [2020-10-15 00:04:11,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 00:04:11,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-15 00:04:11,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-15 00:04:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-15 00:04:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-15 00:04:11,095 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 55 [2020-10-15 00:04:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:11,096 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-15 00:04:11,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-15 00:04:11,096 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-15 00:04:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:04:11,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:11,096 INFO L422 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:11,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-15 00:04:11,096 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:11,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:11,097 INFO L82 PathProgramCache]: Analyzing trace with hash -699189846, now seen corresponding path program 45 times [2020-10-15 00:04:11,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:11,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244324953] [2020-10-15 00:04:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:11,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:11,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:11,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:04:11,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-15 00:04:11,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:11,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-15 00:04:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:04:11,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:12,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:12,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:12,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:12,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:12,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:12,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244324953] [2020-10-15 00:04:12,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:12,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-15 00:04:12,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611219143] [2020-10-15 00:04:12,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-15 00:04:12,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:12,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-15 00:04:12,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:04:12,996 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 48 states. [2020-10-15 00:04:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:13,056 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-10-15 00:04:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-15 00:04:13,057 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 56 [2020-10-15 00:04:13,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:13,057 INFO L225 Difference]: With dead ends: 64 [2020-10-15 00:04:13,057 INFO L226 Difference]: Without dead ends: 59 [2020-10-15 00:04:13,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:04:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-15 00:04:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-15 00:04:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-15 00:04:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-10-15 00:04:13,061 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2020-10-15 00:04:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:13,061 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-10-15 00:04:13,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-15 00:04:13,061 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-10-15 00:04:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:04:13,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:13,062 INFO L422 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:13,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-15 00:04:13,062 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:13,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:13,062 INFO L82 PathProgramCache]: Analyzing trace with hash -164510986, now seen corresponding path program 46 times [2020-10-15 00:04:13,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:13,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101812268] [2020-10-15 00:04:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:13,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:13,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 00:04:13,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:13,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-15 00:04:13,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:13,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:13,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-15 00:04:13,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:13,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 00:04:13,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:15,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:15,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:15,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:15,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:15,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101812268] [2020-10-15 00:04:15,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:15,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-15 00:04:15,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122472680] [2020-10-15 00:04:15,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-15 00:04:15,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:15,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-15 00:04:15,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 00:04:15,025 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 49 states. [2020-10-15 00:04:15,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:15,085 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-10-15 00:04:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-15 00:04:15,086 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 57 [2020-10-15 00:04:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:15,086 INFO L225 Difference]: With dead ends: 65 [2020-10-15 00:04:15,086 INFO L226 Difference]: Without dead ends: 60 [2020-10-15 00:04:15,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 00:04:15,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-15 00:04:15,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-15 00:04:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-15 00:04:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-10-15 00:04:15,090 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 57 [2020-10-15 00:04:15,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:15,090 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-10-15 00:04:15,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-15 00:04:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-10-15 00:04:15,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:04:15,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:15,091 INFO L422 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:15,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 00:04:15,091 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:15,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:15,091 INFO L82 PathProgramCache]: Analyzing trace with hash -769335510, now seen corresponding path program 47 times [2020-10-15 00:04:15,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:15,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978670115] [2020-10-15 00:04:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:15,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:15,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:04:15,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-10-15 00:04:15,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:15,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-15 00:04:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:04:15,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:17,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:17,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:17,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:17,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:17,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:17,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:17,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:17,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:17,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:17,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978670115] [2020-10-15 00:04:17,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:17,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-15 00:04:17,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681369215] [2020-10-15 00:04:17,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-15 00:04:17,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:17,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-15 00:04:17,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:04:17,106 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 50 states. [2020-10-15 00:04:17,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:17,178 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-10-15 00:04:17,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-15 00:04:17,178 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 58 [2020-10-15 00:04:17,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:17,179 INFO L225 Difference]: With dead ends: 66 [2020-10-15 00:04:17,179 INFO L226 Difference]: Without dead ends: 61 [2020-10-15 00:04:17,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:04:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-15 00:04:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-15 00:04:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 00:04:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-15 00:04:17,182 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 58 [2020-10-15 00:04:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:17,182 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-15 00:04:17,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-15 00:04:17,182 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-15 00:04:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:04:17,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:17,183 INFO L422 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:17,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 00:04:17,183 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:17,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1955940726, now seen corresponding path program 48 times [2020-10-15 00:04:17,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:17,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171337553] [2020-10-15 00:04:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:18,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:18,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:04:18,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:18,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-10-15 00:04:18,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:18,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-15 00:04:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 00:04:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:19,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:19,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:19,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:19,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:19,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:19,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:19,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:19,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:19,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171337553] [2020-10-15 00:04:19,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:19,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-15 00:04:19,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96554534] [2020-10-15 00:04:19,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-15 00:04:19,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:19,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-15 00:04:19,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 00:04:19,365 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 51 states. [2020-10-15 00:04:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:19,453 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-10-15 00:04:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-15 00:04:19,454 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 59 [2020-10-15 00:04:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:19,455 INFO L225 Difference]: With dead ends: 67 [2020-10-15 00:04:19,455 INFO L226 Difference]: Without dead ends: 62 [2020-10-15 00:04:19,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 00:04:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-15 00:04:19,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-15 00:04:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-15 00:04:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-10-15 00:04:19,459 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 59 [2020-10-15 00:04:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:19,459 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-10-15 00:04:19,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-15 00:04:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-10-15 00:04:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:04:19,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:19,460 INFO L422 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:19,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 00:04:19,460 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:19,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:19,461 INFO L82 PathProgramCache]: Analyzing trace with hash 540158122, now seen corresponding path program 49 times [2020-10-15 00:04:19,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:19,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125273243] [2020-10-15 00:04:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:20,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:20,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:04:20,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:20,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-15 00:04:20,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:20,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-15 00:04:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 00:04:20,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:21,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:21,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:21,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:21,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:21,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125273243] [2020-10-15 00:04:21,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:21,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-15 00:04:21,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033041127] [2020-10-15 00:04:21,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-15 00:04:21,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:21,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-15 00:04:21,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:04:21,708 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 52 states. [2020-10-15 00:04:21,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:21,783 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-10-15 00:04:21,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-15 00:04:21,784 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 60 [2020-10-15 00:04:21,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:21,785 INFO L225 Difference]: With dead ends: 68 [2020-10-15 00:04:21,785 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 00:04:21,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:04:21,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 00:04:21,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-15 00:04:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-15 00:04:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-15 00:04:21,788 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2020-10-15 00:04:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:21,792 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-15 00:04:21,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-15 00:04:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-15 00:04:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:04:21,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:21,793 INFO L422 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:21,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-15 00:04:21,793 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:21,794 INFO L82 PathProgramCache]: Analyzing trace with hash -399429642, now seen corresponding path program 50 times [2020-10-15 00:04:21,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:21,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599329253] [2020-10-15 00:04:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:21,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:22,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:22,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:04:22,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-15 00:04:22,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:22,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-15 00:04:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 00:04:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:24,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:24,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:24,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:24,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:24,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:24,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:24,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:24,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:24,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599329253] [2020-10-15 00:04:24,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:24,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-15 00:04:24,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682057008] [2020-10-15 00:04:24,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-15 00:04:24,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:24,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-15 00:04:24,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 00:04:24,041 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 53 states. [2020-10-15 00:04:24,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:24,130 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-10-15 00:04:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-15 00:04:24,130 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 61 [2020-10-15 00:04:24,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:24,132 INFO L225 Difference]: With dead ends: 69 [2020-10-15 00:04:24,132 INFO L226 Difference]: Without dead ends: 64 [2020-10-15 00:04:24,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 00:04:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-15 00:04:24,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-15 00:04:24,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-15 00:04:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-10-15 00:04:24,137 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 61 [2020-10-15 00:04:24,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:24,138 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-10-15 00:04:24,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-15 00:04:24,138 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-10-15 00:04:24,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 00:04:24,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:24,139 INFO L422 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:24,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-15 00:04:24,141 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:24,142 INFO L82 PathProgramCache]: Analyzing trace with hash 538120746, now seen corresponding path program 51 times [2020-10-15 00:04:24,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:24,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068644151] [2020-10-15 00:04:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:24,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:24,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:24,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:04:24,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:24,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-15 00:04:24,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:24,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:24,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-15 00:04:24,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 00:04:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:26,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:26,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:26,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:26,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:26,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:26,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:26,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068644151] [2020-10-15 00:04:26,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:26,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-15 00:04:26,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937249383] [2020-10-15 00:04:26,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-15 00:04:26,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:26,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-15 00:04:26,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-15 00:04:26,385 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 54 states. [2020-10-15 00:04:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:26,469 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-10-15 00:04:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-15 00:04:26,470 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 62 [2020-10-15 00:04:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:26,471 INFO L225 Difference]: With dead ends: 70 [2020-10-15 00:04:26,471 INFO L226 Difference]: Without dead ends: 65 [2020-10-15 00:04:26,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-15 00:04:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-15 00:04:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-15 00:04:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-15 00:04:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-15 00:04:26,474 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2020-10-15 00:04:26,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:26,475 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-15 00:04:26,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-15 00:04:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-15 00:04:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 00:04:26,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:26,476 INFO L422 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:26,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-15 00:04:26,476 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:26,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:26,476 INFO L82 PathProgramCache]: Analyzing trace with hash -462588298, now seen corresponding path program 52 times [2020-10-15 00:04:26,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:26,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003664443] [2020-10-15 00:04:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:26,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:26,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:27,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:27,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:04:27,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-15 00:04:27,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:27,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-15 00:04:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 00:04:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:28,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:28,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:28,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:28,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:28,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:28,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:28,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:28,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:28,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:28,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003664443] [2020-10-15 00:04:28,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:28,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-15 00:04:28,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042236441] [2020-10-15 00:04:28,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-15 00:04:28,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:28,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-15 00:04:28,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-10-15 00:04:28,897 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 55 states. [2020-10-15 00:04:29,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:29,002 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2020-10-15 00:04:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-15 00:04:29,003 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 63 [2020-10-15 00:04:29,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:29,003 INFO L225 Difference]: With dead ends: 71 [2020-10-15 00:04:29,003 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 00:04:29,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-10-15 00:04:29,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 00:04:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-15 00:04:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-15 00:04:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-15 00:04:29,008 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 63 [2020-10-15 00:04:29,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:29,008 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-15 00:04:29,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-15 00:04:29,009 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-15 00:04:29,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 00:04:29,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:29,009 INFO L422 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:29,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 00:04:29,010 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:29,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:29,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1419797590, now seen corresponding path program 53 times [2020-10-15 00:04:29,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:29,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179292358] [2020-10-15 00:04:29,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:29,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:29,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:29,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:04:29,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:29,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-15 00:04:29,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:29,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-15 00:04:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:04:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:31,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:31,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:31,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:31,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:31,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:31,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:31,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179292358] [2020-10-15 00:04:31,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:31,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-15 00:04:31,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338228978] [2020-10-15 00:04:31,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-15 00:04:31,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:31,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-15 00:04:31,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2020-10-15 00:04:31,488 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 56 states. [2020-10-15 00:04:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:31,588 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-10-15 00:04:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-15 00:04:31,592 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 64 [2020-10-15 00:04:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:31,592 INFO L225 Difference]: With dead ends: 72 [2020-10-15 00:04:31,592 INFO L226 Difference]: Without dead ends: 67 [2020-10-15 00:04:31,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2020-10-15 00:04:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-15 00:04:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-15 00:04:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-15 00:04:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-10-15 00:04:31,596 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 64 [2020-10-15 00:04:31,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:31,596 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-10-15 00:04:31,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-15 00:04:31,596 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-10-15 00:04:31,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 00:04:31,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:31,597 INFO L422 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:31,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 00:04:31,598 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:31,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:31,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1028514570, now seen corresponding path program 54 times [2020-10-15 00:04:31,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:31,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826328088] [2020-10-15 00:04:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:32,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:32,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 00:04:32,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:32,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-10-15 00:04:32,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:32,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-15 00:04:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 00:04:32,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:34,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:34,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:34,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:34,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:34,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:34,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:34,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:34,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:34,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:34,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:34,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:34,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826328088] [2020-10-15 00:04:34,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:34,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-15 00:04:34,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968477399] [2020-10-15 00:04:34,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-15 00:04:34,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:34,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-15 00:04:34,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 00:04:34,079 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 57 states. [2020-10-15 00:04:34,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:34,178 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2020-10-15 00:04:34,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-15 00:04:34,179 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 65 [2020-10-15 00:04:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:34,180 INFO L225 Difference]: With dead ends: 73 [2020-10-15 00:04:34,180 INFO L226 Difference]: Without dead ends: 68 [2020-10-15 00:04:34,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 00:04:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-15 00:04:34,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-15 00:04:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-15 00:04:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-10-15 00:04:34,189 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 65 [2020-10-15 00:04:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:34,189 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-10-15 00:04:34,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-15 00:04:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-10-15 00:04:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 00:04:34,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:34,190 INFO L422 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:34,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 00:04:34,191 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:34,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1783642838, now seen corresponding path program 55 times [2020-10-15 00:04:34,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:34,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671491754] [2020-10-15 00:04:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:34,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:35,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:35,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 00:04:35,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-15 00:04:35,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:35,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-15 00:04:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 00:04:35,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:36,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:36,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:36,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:36,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:36,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:36,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:36,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:36,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671491754] [2020-10-15 00:04:36,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:36,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-15 00:04:36,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311571360] [2020-10-15 00:04:36,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-15 00:04:36,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:36,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-15 00:04:36,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2020-10-15 00:04:36,778 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 58 states. [2020-10-15 00:04:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:36,883 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2020-10-15 00:04:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-15 00:04:36,888 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 66 [2020-10-15 00:04:36,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:36,889 INFO L225 Difference]: With dead ends: 74 [2020-10-15 00:04:36,889 INFO L226 Difference]: Without dead ends: 69 [2020-10-15 00:04:36,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2020-10-15 00:04:36,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-15 00:04:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-15 00:04:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-15 00:04:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-10-15 00:04:36,893 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 66 [2020-10-15 00:04:36,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:36,894 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-10-15 00:04:36,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-15 00:04:36,894 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-10-15 00:04:36,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 00:04:36,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:36,896 INFO L422 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:36,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-15 00:04:36,896 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:36,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:36,896 INFO L82 PathProgramCache]: Analyzing trace with hash 577184630, now seen corresponding path program 56 times [2020-10-15 00:04:36,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:36,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132190544] [2020-10-15 00:04:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:36,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:37,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:37,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 00:04:37,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-10-15 00:04:37,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:37,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-15 00:04:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 00:04:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:39,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:39,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:39,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:39,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:39,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:39,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:39,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:39,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:39,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132190544] [2020-10-15 00:04:39,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:39,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-15 00:04:39,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672190580] [2020-10-15 00:04:39,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-15 00:04:39,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:39,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-15 00:04:39,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2020-10-15 00:04:39,758 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 59 states. [2020-10-15 00:04:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:39,866 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-10-15 00:04:39,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-15 00:04:39,868 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 67 [2020-10-15 00:04:39,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:39,868 INFO L225 Difference]: With dead ends: 75 [2020-10-15 00:04:39,869 INFO L226 Difference]: Without dead ends: 70 [2020-10-15 00:04:39,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2020-10-15 00:04:39,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-15 00:04:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-15 00:04:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-15 00:04:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-10-15 00:04:39,871 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 67 [2020-10-15 00:04:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:39,872 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-10-15 00:04:39,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-15 00:04:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-10-15 00:04:39,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:04:39,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:39,872 INFO L422 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:39,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-15 00:04:39,873 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:39,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:39,873 INFO L82 PathProgramCache]: Analyzing trace with hash 748392106, now seen corresponding path program 57 times [2020-10-15 00:04:39,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:39,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406482634] [2020-10-15 00:04:39,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:40,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:40,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 00:04:40,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-10-15 00:04:40,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:40,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-15 00:04:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 00:04:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:42,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:42,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:42,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:42,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:42,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:42,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:42,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:42,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:42,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:42,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406482634] [2020-10-15 00:04:42,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:42,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-15 00:04:42,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404892779] [2020-10-15 00:04:42,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-15 00:04:42,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:42,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-15 00:04:42,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2020-10-15 00:04:42,621 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 60 states. [2020-10-15 00:04:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:42,724 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-10-15 00:04:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-15 00:04:42,725 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 68 [2020-10-15 00:04:42,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:42,726 INFO L225 Difference]: With dead ends: 76 [2020-10-15 00:04:42,726 INFO L226 Difference]: Without dead ends: 71 [2020-10-15 00:04:42,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2020-10-15 00:04:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-15 00:04:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-15 00:04:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-15 00:04:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-15 00:04:42,729 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 68 [2020-10-15 00:04:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:42,729 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-15 00:04:42,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-15 00:04:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-15 00:04:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 00:04:42,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:42,730 INFO L422 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:42,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-15 00:04:42,730 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:42,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1760856566, now seen corresponding path program 58 times [2020-10-15 00:04:42,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:42,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689130533] [2020-10-15 00:04:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:42,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:43,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:43,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:04:43,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:43,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-10-15 00:04:43,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:43,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-15 00:04:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 00:04:43,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:45,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:45,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:45,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:45,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:45,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:45,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:45,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:45,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:45,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689130533] [2020-10-15 00:04:45,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:45,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-15 00:04:45,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489491001] [2020-10-15 00:04:45,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-15 00:04:45,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:45,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-15 00:04:45,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 00:04:45,662 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 61 states. [2020-10-15 00:04:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:45,748 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2020-10-15 00:04:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-15 00:04:45,751 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 69 [2020-10-15 00:04:45,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:45,752 INFO L225 Difference]: With dead ends: 77 [2020-10-15 00:04:45,752 INFO L226 Difference]: Without dead ends: 72 [2020-10-15 00:04:45,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 00:04:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-15 00:04:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-15 00:04:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-15 00:04:45,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-15 00:04:45,758 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 69 [2020-10-15 00:04:45,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:45,758 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-15 00:04:45,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-15 00:04:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-15 00:04:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 00:04:45,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:45,760 INFO L422 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:45,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-15 00:04:45,760 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:45,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:45,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1212483542, now seen corresponding path program 59 times [2020-10-15 00:04:45,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:45,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289055868] [2020-10-15 00:04:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:46,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:04:46,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-15 00:04:46,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:46,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-15 00:04:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 00:04:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:48,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:48,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:48,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:48,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:48,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:48,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:48,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289055868] [2020-10-15 00:04:48,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:48,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-15 00:04:48,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882064299] [2020-10-15 00:04:48,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-15 00:04:48,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:48,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-15 00:04:48,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2020-10-15 00:04:48,757 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 62 states. [2020-10-15 00:04:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:48,877 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-10-15 00:04:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-15 00:04:48,878 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 70 [2020-10-15 00:04:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:48,878 INFO L225 Difference]: With dead ends: 78 [2020-10-15 00:04:48,878 INFO L226 Difference]: Without dead ends: 73 [2020-10-15 00:04:48,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2020-10-15 00:04:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-15 00:04:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-15 00:04:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-15 00:04:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-15 00:04:48,881 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2020-10-15 00:04:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:48,881 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-15 00:04:48,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-15 00:04:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-15 00:04:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 00:04:48,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:48,882 INFO L422 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:48,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-15 00:04:48,882 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:48,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:48,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1103253622, now seen corresponding path program 60 times [2020-10-15 00:04:48,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:48,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945991915] [2020-10-15 00:04:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:48,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:49,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:49,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:04:49,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-15 00:04:49,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:49,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-15 00:04:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 00:04:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:52,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:52,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:52,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:52,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:52,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:52,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:52,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:52,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:52,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:52,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945991915] [2020-10-15 00:04:52,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:52,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-15 00:04:52,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961533723] [2020-10-15 00:04:52,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-15 00:04:52,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:52,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-15 00:04:52,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 00:04:52,078 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 63 states. [2020-10-15 00:04:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:52,214 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-10-15 00:04:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-15 00:04:52,215 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 71 [2020-10-15 00:04:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:52,216 INFO L225 Difference]: With dead ends: 79 [2020-10-15 00:04:52,216 INFO L226 Difference]: Without dead ends: 74 [2020-10-15 00:04:52,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 00:04:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-15 00:04:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-15 00:04:52,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-15 00:04:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2020-10-15 00:04:52,219 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 71 [2020-10-15 00:04:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:52,221 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2020-10-15 00:04:52,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-15 00:04:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2020-10-15 00:04:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 00:04:52,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:52,222 INFO L422 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:52,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-15 00:04:52,222 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:52,224 INFO L82 PathProgramCache]: Analyzing trace with hash -123338326, now seen corresponding path program 61 times [2020-10-15 00:04:52,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:52,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376877751] [2020-10-15 00:04:52,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:53,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:53,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 00:04:53,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:53,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-10-15 00:04:53,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:53,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-15 00:04:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 00:04:53,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:55,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:55,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:55,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:55,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:55,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:55,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:55,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:55,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376877751] [2020-10-15 00:04:55,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:55,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-15 00:04:55,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092931842] [2020-10-15 00:04:55,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-15 00:04:55,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:55,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-15 00:04:55,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2020-10-15 00:04:55,585 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 64 states. [2020-10-15 00:04:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:55,702 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2020-10-15 00:04:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-15 00:04:55,702 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 72 [2020-10-15 00:04:55,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:55,703 INFO L225 Difference]: With dead ends: 80 [2020-10-15 00:04:55,703 INFO L226 Difference]: Without dead ends: 75 [2020-10-15 00:04:55,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2020-10-15 00:04:55,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-15 00:04:55,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-15 00:04:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-15 00:04:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-10-15 00:04:55,705 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 72 [2020-10-15 00:04:55,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:55,705 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-10-15 00:04:55,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-15 00:04:55,705 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-10-15 00:04:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 00:04:55,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:55,706 INFO L422 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:55,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-15 00:04:55,706 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:55,707 INFO L82 PathProgramCache]: Analyzing trace with hash 507016950, now seen corresponding path program 62 times [2020-10-15 00:04:55,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:55,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330069200] [2020-10-15 00:04:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:56,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:56,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 00:04:56,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-10-15 00:04:56,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:56,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-15 00:04:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 00:04:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:58,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:58,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:58,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:58,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:58,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:58,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:58,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:58,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:58,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:58,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:58,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:58,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:58,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330069200] [2020-10-15 00:04:58,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:58,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-15 00:04:58,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063831645] [2020-10-15 00:04:58,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-15 00:04:58,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:58,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-15 00:04:58,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 00:04:58,990 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 65 states. [2020-10-15 00:04:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:59,111 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2020-10-15 00:04:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 00:04:59,112 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 73 [2020-10-15 00:04:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:59,113 INFO L225 Difference]: With dead ends: 81 [2020-10-15 00:04:59,113 INFO L226 Difference]: Without dead ends: 76 [2020-10-15 00:04:59,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 00:04:59,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-15 00:04:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-15 00:04:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-15 00:04:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-10-15 00:04:59,115 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 73 [2020-10-15 00:04:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:59,115 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-10-15 00:04:59,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-15 00:04:59,115 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-10-15 00:04:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 00:04:59,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:59,116 INFO L422 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:59,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-15 00:04:59,116 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:59,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1426805974, now seen corresponding path program 63 times [2020-10-15 00:04:59,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:59,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118452205] [2020-10-15 00:04:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:00,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:00,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:05:00,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-10-15 00:05:00,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:00,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 65 [2020-10-15 00:05:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 00:05:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:02,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:02,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:02,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:02,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:02,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:02,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:02,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:02,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118452205] [2020-10-15 00:05:02,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:02,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-15 00:05:02,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98401918] [2020-10-15 00:05:02,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-15 00:05:02,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:02,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-15 00:05:02,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2020-10-15 00:05:02,770 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 66 states. [2020-10-15 00:05:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:02,894 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-10-15 00:05:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-15 00:05:02,896 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 74 [2020-10-15 00:05:02,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:02,897 INFO L225 Difference]: With dead ends: 82 [2020-10-15 00:05:02,898 INFO L226 Difference]: Without dead ends: 77 [2020-10-15 00:05:02,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2020-10-15 00:05:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-15 00:05:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-15 00:05:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-15 00:05:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-10-15 00:05:02,902 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2020-10-15 00:05:02,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:02,902 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-10-15 00:05:02,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-15 00:05:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-10-15 00:05:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 00:05:02,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:02,903 INFO L422 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:02,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-15 00:05:02,903 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:02,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:02,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1245774474, now seen corresponding path program 64 times [2020-10-15 00:05:02,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:02,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983049729] [2020-10-15 00:05:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:04,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:04,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 00:05:04,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1307 [2020-10-15 00:05:04,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:04,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-15 00:05:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 00:05:04,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:06,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:06,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:06,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:06,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:06,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:06,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:06,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:06,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983049729] [2020-10-15 00:05:06,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:06,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-10-15 00:05:06,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803748662] [2020-10-15 00:05:06,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-15 00:05:06,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:06,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-15 00:05:06,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-10-15 00:05:06,603 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 67 states. [2020-10-15 00:05:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:06,713 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-10-15 00:05:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-15 00:05:06,714 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 75 [2020-10-15 00:05:06,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:06,715 INFO L225 Difference]: With dead ends: 83 [2020-10-15 00:05:06,715 INFO L226 Difference]: Without dead ends: 78 [2020-10-15 00:05:06,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-10-15 00:05:06,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-15 00:05:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-15 00:05:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-15 00:05:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-15 00:05:06,718 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 75 [2020-10-15 00:05:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:06,718 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-15 00:05:06,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-15 00:05:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-15 00:05:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 00:05:06,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:06,719 INFO L422 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:06,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-15 00:05:06,720 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:06,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:06,720 INFO L82 PathProgramCache]: Analyzing trace with hash 71234730, now seen corresponding path program 65 times [2020-10-15 00:05:06,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:06,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360525689] [2020-10-15 00:05:06,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:07,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 00:05:07,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1179 [2020-10-15 00:05:07,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:07,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-15 00:05:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 00:05:07,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:10,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:10,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:10,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:10,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:10,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:10,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:10,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360525689] [2020-10-15 00:05:10,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:10,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-15 00:05:10,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998483054] [2020-10-15 00:05:10,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-15 00:05:10,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:10,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-15 00:05:10,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2020-10-15 00:05:10,402 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 68 states. [2020-10-15 00:05:10,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:10,503 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2020-10-15 00:05:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-15 00:05:10,504 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 76 [2020-10-15 00:05:10,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:10,505 INFO L225 Difference]: With dead ends: 84 [2020-10-15 00:05:10,505 INFO L226 Difference]: Without dead ends: 79 [2020-10-15 00:05:10,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2020-10-15 00:05:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-15 00:05:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-15 00:05:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 00:05:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-10-15 00:05:10,508 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 76 [2020-10-15 00:05:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:10,508 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-10-15 00:05:10,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-15 00:05:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-10-15 00:05:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 00:05:10,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:10,509 INFO L422 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:10,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-15 00:05:10,509 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:10,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2051152906, now seen corresponding path program 66 times [2020-10-15 00:05:10,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:10,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122436151] [2020-10-15 00:05:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:10,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:11,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:11,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 00:05:11,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:11,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1428 [2020-10-15 00:05:11,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:11,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-15 00:05:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 00:05:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:14,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:14,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:14,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:14,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:14,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:14,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:14,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:14,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:14,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:14,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:14,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:14,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122436151] [2020-10-15 00:05:14,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:14,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-15 00:05:14,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401908873] [2020-10-15 00:05:14,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-15 00:05:14,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:14,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-15 00:05:14,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 00:05:14,579 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 69 states. [2020-10-15 00:05:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:14,677 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-10-15 00:05:14,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-15 00:05:14,678 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 77 [2020-10-15 00:05:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:14,679 INFO L225 Difference]: With dead ends: 85 [2020-10-15 00:05:14,679 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 00:05:14,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 00:05:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 00:05:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-15 00:05:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-15 00:05:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2020-10-15 00:05:14,681 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 77 [2020-10-15 00:05:14,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:14,682 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2020-10-15 00:05:14,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-15 00:05:14,682 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2020-10-15 00:05:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 00:05:14,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:14,683 INFO L422 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:14,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-15 00:05:14,683 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:14,683 INFO L82 PathProgramCache]: Analyzing trace with hash 874307114, now seen corresponding path program 67 times [2020-10-15 00:05:14,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:14,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597824723] [2020-10-15 00:05:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:16,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:16,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 00:05:16,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-10-15 00:05:16,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:16,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 69 [2020-10-15 00:05:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 00:05:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:18,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:18,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:18,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:18,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:18,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:18,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597824723] [2020-10-15 00:05:18,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:18,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-15 00:05:18,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108670853] [2020-10-15 00:05:18,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-15 00:05:18,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:18,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-15 00:05:18,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-10-15 00:05:18,687 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 70 states. [2020-10-15 00:05:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:18,797 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-10-15 00:05:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-15 00:05:18,800 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 78 [2020-10-15 00:05:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:18,801 INFO L225 Difference]: With dead ends: 86 [2020-10-15 00:05:18,801 INFO L226 Difference]: Without dead ends: 81 [2020-10-15 00:05:18,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-10-15 00:05:18,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-15 00:05:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-15 00:05:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-15 00:05:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-10-15 00:05:18,804 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 78 [2020-10-15 00:05:18,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:18,805 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-10-15 00:05:18,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-15 00:05:18,805 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-10-15 00:05:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 00:05:18,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:18,806 INFO L422 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:18,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-15 00:05:18,806 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:18,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:18,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1369254518, now seen corresponding path program 68 times [2020-10-15 00:05:18,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:18,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252180106] [2020-10-15 00:05:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:18,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:20,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:20,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 00:05:20,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:20,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1388 [2020-10-15 00:05:20,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:20,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 70 [2020-10-15 00:05:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 00:05:20,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:22,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:22,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:22,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:22,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:22,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:22,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:22,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:22,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252180106] [2020-10-15 00:05:22,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:22,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-10-15 00:05:22,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837489284] [2020-10-15 00:05:22,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-10-15 00:05:22,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:22,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-10-15 00:05:22,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2020-10-15 00:05:22,961 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 71 states. [2020-10-15 00:05:23,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:23,066 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2020-10-15 00:05:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-15 00:05:23,066 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 79 [2020-10-15 00:05:23,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:23,067 INFO L225 Difference]: With dead ends: 87 [2020-10-15 00:05:23,067 INFO L226 Difference]: Without dead ends: 82 [2020-10-15 00:05:23,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2020-10-15 00:05:23,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-15 00:05:23,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-15 00:05:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-15 00:05:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-10-15 00:05:23,070 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 79 [2020-10-15 00:05:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:23,070 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-10-15 00:05:23,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-10-15 00:05:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-10-15 00:05:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 00:05:23,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:23,071 INFO L422 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:23,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-15 00:05:23,071 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:23,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:23,071 INFO L82 PathProgramCache]: Analyzing trace with hash -467245142, now seen corresponding path program 69 times [2020-10-15 00:05:23,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:23,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773598230] [2020-10-15 00:05:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:25,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:25,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 00:05:25,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:25,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1995 [2020-10-15 00:05:25,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:25,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:25,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 71 [2020-10-15 00:05:25,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:25,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 00:05:25,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:27,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:27,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:27,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:27,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:27,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:27,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:27,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:27,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773598230] [2020-10-15 00:05:27,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:27,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-15 00:05:27,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513261218] [2020-10-15 00:05:27,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-15 00:05:27,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:27,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-15 00:05:27,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-10-15 00:05:27,947 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 72 states. [2020-10-15 00:05:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:28,050 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2020-10-15 00:05:28,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-15 00:05:28,051 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 80 [2020-10-15 00:05:28,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:28,052 INFO L225 Difference]: With dead ends: 88 [2020-10-15 00:05:28,052 INFO L226 Difference]: Without dead ends: 83 [2020-10-15 00:05:28,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-10-15 00:05:28,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-15 00:05:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-15 00:05:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-15 00:05:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-15 00:05:28,055 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2020-10-15 00:05:28,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:28,056 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-15 00:05:28,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-15 00:05:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-15 00:05:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 00:05:28,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:28,057 INFO L422 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:28,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-15 00:05:28,057 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:28,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:28,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1564159754, now seen corresponding path program 70 times [2020-10-15 00:05:28,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:28,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862904627] [2020-10-15 00:05:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:28,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:29,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:29,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 00:05:29,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:29,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1577 [2020-10-15 00:05:29,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:29,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 72 [2020-10-15 00:05:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 00:05:29,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:32,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:32,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:32,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:32,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:32,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862904627] [2020-10-15 00:05:32,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:32,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-10-15 00:05:32,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34209640] [2020-10-15 00:05:32,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-15 00:05:32,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:32,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-15 00:05:32,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 00:05:32,546 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 73 states. [2020-10-15 00:05:32,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:32,658 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2020-10-15 00:05:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-15 00:05:32,659 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 81 [2020-10-15 00:05:32,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:32,660 INFO L225 Difference]: With dead ends: 89 [2020-10-15 00:05:32,660 INFO L226 Difference]: Without dead ends: 84 [2020-10-15 00:05:32,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 00:05:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-15 00:05:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-15 00:05:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-15 00:05:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-10-15 00:05:32,664 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 81 [2020-10-15 00:05:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:32,664 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-10-15 00:05:32,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-10-15 00:05:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-10-15 00:05:32,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 00:05:32,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:32,665 INFO L422 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:32,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-15 00:05:32,665 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:32,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:32,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1208774358, now seen corresponding path program 71 times [2020-10-15 00:05:32,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:32,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443890691] [2020-10-15 00:05:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:34,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:34,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 00:05:34,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:34,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1594 [2020-10-15 00:05:34,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:34,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-15 00:05:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 00:05:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:37,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:37,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:37,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:37,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:37,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:37,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:37,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443890691] [2020-10-15 00:05:37,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:37,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-15 00:05:37,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140111848] [2020-10-15 00:05:37,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-15 00:05:37,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:37,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-15 00:05:37,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-10-15 00:05:37,318 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 74 states. [2020-10-15 00:05:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:37,457 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-10-15 00:05:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-15 00:05:37,458 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 82 [2020-10-15 00:05:37,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:37,459 INFO L225 Difference]: With dead ends: 90 [2020-10-15 00:05:37,459 INFO L226 Difference]: Without dead ends: 85 [2020-10-15 00:05:37,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-10-15 00:05:37,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-15 00:05:37,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-15 00:05:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 00:05:37,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2020-10-15 00:05:37,463 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 82 [2020-10-15 00:05:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:37,463 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2020-10-15 00:05:37,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-15 00:05:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2020-10-15 00:05:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 00:05:37,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:37,464 INFO L422 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:37,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-15 00:05:37,465 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:37,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:37,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1218238326, now seen corresponding path program 72 times [2020-10-15 00:05:37,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:37,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907892084] [2020-10-15 00:05:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:39,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:39,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 00:05:39,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1782 [2020-10-15 00:05:39,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:39,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-15 00:05:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 00:05:39,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:42,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:42,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:42,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:42,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:42,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:42,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:42,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:42,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:42,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907892084] [2020-10-15 00:05:42,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:42,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-10-15 00:05:42,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113102474] [2020-10-15 00:05:42,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-10-15 00:05:42,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:42,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-10-15 00:05:42,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-10-15 00:05:42,447 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 75 states. [2020-10-15 00:05:42,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:42,578 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2020-10-15 00:05:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-15 00:05:42,578 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 83 [2020-10-15 00:05:42,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:42,579 INFO L225 Difference]: With dead ends: 91 [2020-10-15 00:05:42,579 INFO L226 Difference]: Without dead ends: 86 [2020-10-15 00:05:42,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-10-15 00:05:42,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-15 00:05:42,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-15 00:05:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-15 00:05:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-10-15 00:05:42,583 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 83 [2020-10-15 00:05:42,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:42,583 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-10-15 00:05:42,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-10-15 00:05:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-10-15 00:05:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 00:05:42,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:42,584 INFO L422 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:42,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-15 00:05:42,585 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:42,585 INFO L82 PathProgramCache]: Analyzing trace with hash -853779798, now seen corresponding path program 73 times [2020-10-15 00:05:42,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:42,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071088161] [2020-10-15 00:05:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:42,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:42,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:44,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:44,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 00:05:44,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:44,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1838 [2020-10-15 00:05:44,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:44,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 75 [2020-10-15 00:05:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-15 00:05:44,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:47,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:47,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:47,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:47,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:47,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:47,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:47,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:47,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071088161] [2020-10-15 00:05:47,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:47,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-15 00:05:47,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759818207] [2020-10-15 00:05:47,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-15 00:05:47,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:47,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-15 00:05:47,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-10-15 00:05:47,684 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 76 states. [2020-10-15 00:05:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:47,823 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-10-15 00:05:47,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-15 00:05:47,824 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 84 [2020-10-15 00:05:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:47,824 INFO L225 Difference]: With dead ends: 92 [2020-10-15 00:05:47,824 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 00:05:47,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-10-15 00:05:47,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 00:05:47,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-15 00:05:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-15 00:05:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-10-15 00:05:47,828 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 84 [2020-10-15 00:05:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:47,829 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-10-15 00:05:47,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-15 00:05:47,829 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-10-15 00:05:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 00:05:47,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:47,830 INFO L422 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:47,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-15 00:05:47,830 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:47,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:47,830 INFO L82 PathProgramCache]: Analyzing trace with hash -661832202, now seen corresponding path program 74 times [2020-10-15 00:05:47,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:47,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399729838] [2020-10-15 00:05:47,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:47,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:49,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 00:05:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:49,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1703 [2020-10-15 00:05:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:49,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 76 [2020-10-15 00:05:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 00:05:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:52,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:52,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:52,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:52,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:52,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:52,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:52,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:52,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:52,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:52,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399729838] [2020-10-15 00:05:52,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:52,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-10-15 00:05:52,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545856242] [2020-10-15 00:05:52,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-10-15 00:05:52,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:52,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-10-15 00:05:52,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-10-15 00:05:52,920 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 77 states. [2020-10-15 00:05:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:53,089 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2020-10-15 00:05:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-15 00:05:53,090 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 85 [2020-10-15 00:05:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:53,091 INFO L225 Difference]: With dead ends: 93 [2020-10-15 00:05:53,091 INFO L226 Difference]: Without dead ends: 88 [2020-10-15 00:05:53,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-10-15 00:05:53,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-15 00:05:53,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-15 00:05:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-15 00:05:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-10-15 00:05:53,095 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 85 [2020-10-15 00:05:53,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:53,095 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-10-15 00:05:53,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-10-15 00:05:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-10-15 00:05:53,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 00:05:53,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:53,096 INFO L422 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:53,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-15 00:05:53,097 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:53,097 INFO L82 PathProgramCache]: Analyzing trace with hash 993575978, now seen corresponding path program 75 times [2020-10-15 00:05:53,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:53,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059001412] [2020-10-15 00:05:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:53,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:54,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:54,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 00:05:54,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:54,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1823 [2020-10-15 00:05:54,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:54,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:54,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 77 [2020-10-15 00:05:54,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:54,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 00:05:54,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:58,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:58,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:58,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:58,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:58,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:58,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:58,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059001412] [2020-10-15 00:05:58,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:58,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-10-15 00:05:58,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944268655] [2020-10-15 00:05:58,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-15 00:05:58,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:58,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-15 00:05:58,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 00:05:58,458 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 78 states. [2020-10-15 00:05:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:58,635 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-10-15 00:05:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-15 00:05:58,639 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 86 [2020-10-15 00:05:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:58,640 INFO L225 Difference]: With dead ends: 94 [2020-10-15 00:05:58,640 INFO L226 Difference]: Without dead ends: 89 [2020-10-15 00:05:58,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 00:05:58,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-15 00:05:58,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-15 00:05:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-15 00:05:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-15 00:05:58,644 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 86 [2020-10-15 00:05:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:58,644 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-15 00:05:58,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-15 00:05:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-15 00:05:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 00:05:58,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:58,645 INFO L422 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:58,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-15 00:05:58,645 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:58,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:58,646 INFO L82 PathProgramCache]: Analyzing trace with hash 771622006, now seen corresponding path program 76 times [2020-10-15 00:05:58,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:58,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122058638] [2020-10-15 00:05:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:58,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:00,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 00:06:00,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:00,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2030 [2020-10-15 00:06:00,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:00,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 78 [2020-10-15 00:06:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 00:06:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:04,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:04,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:04,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:04,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:04,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:04,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122058638] [2020-10-15 00:06:04,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:04,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-10-15 00:06:04,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852349181] [2020-10-15 00:06:04,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-10-15 00:06:04,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:04,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-10-15 00:06:04,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-10-15 00:06:04,279 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 79 states. [2020-10-15 00:06:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:04,453 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2020-10-15 00:06:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-15 00:06:04,454 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 87 [2020-10-15 00:06:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:04,455 INFO L225 Difference]: With dead ends: 95 [2020-10-15 00:06:04,455 INFO L226 Difference]: Without dead ends: 90 [2020-10-15 00:06:04,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-10-15 00:06:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-15 00:06:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-15 00:06:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-15 00:06:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-10-15 00:06:04,458 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 87 [2020-10-15 00:06:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:04,458 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-10-15 00:06:04,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-10-15 00:06:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-10-15 00:06:04,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 00:06:04,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:04,459 INFO L422 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:04,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-15 00:06:04,460 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:04,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:04,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1813983830, now seen corresponding path program 77 times [2020-10-15 00:06:04,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:04,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295191062] [2020-10-15 00:06:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:04,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:06,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:06,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 00:06:06,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:06,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1967 [2020-10-15 00:06:06,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:06,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:06,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 79 [2020-10-15 00:06:06,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:06,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 00:06:06,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:10,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:10,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:10,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:10,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:10,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:10,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:10,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:10,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295191062] [2020-10-15 00:06:10,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:10,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-10-15 00:06:10,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442718165] [2020-10-15 00:06:10,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-10-15 00:06:10,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:10,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-10-15 00:06:10,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-10-15 00:06:10,143 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 80 states. [2020-10-15 00:06:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:10,310 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2020-10-15 00:06:10,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-15 00:06:10,311 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 88 [2020-10-15 00:06:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:10,312 INFO L225 Difference]: With dead ends: 96 [2020-10-15 00:06:10,312 INFO L226 Difference]: Without dead ends: 91 [2020-10-15 00:06:10,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-10-15 00:06:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-15 00:06:10,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-15 00:06:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 00:06:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-15 00:06:10,316 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 88 [2020-10-15 00:06:10,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:10,316 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-15 00:06:10,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-10-15 00:06:10,317 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-15 00:06:10,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 00:06:10,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:10,318 INFO L422 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:10,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-15 00:06:10,318 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:10,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:10,318 INFO L82 PathProgramCache]: Analyzing trace with hash -363386122, now seen corresponding path program 78 times [2020-10-15 00:06:10,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:10,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458119317] [2020-10-15 00:06:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:10,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:12,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 00:06:12,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2107 [2020-10-15 00:06:12,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:12,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 80 [2020-10-15 00:06:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 00:06:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:16,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:16,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:16,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:16,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:16,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:16,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:16,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:16,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458119317] [2020-10-15 00:06:16,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:16,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-10-15 00:06:16,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857112198] [2020-10-15 00:06:16,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-10-15 00:06:16,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:16,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-10-15 00:06:16,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-10-15 00:06:16,273 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 81 states. [2020-10-15 00:06:16,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:16,441 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2020-10-15 00:06:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-15 00:06:16,442 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 89 [2020-10-15 00:06:16,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:16,443 INFO L225 Difference]: With dead ends: 97 [2020-10-15 00:06:16,443 INFO L226 Difference]: Without dead ends: 92 [2020-10-15 00:06:16,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-10-15 00:06:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-15 00:06:16,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-15 00:06:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-15 00:06:16,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-10-15 00:06:16,447 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 89 [2020-10-15 00:06:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:16,447 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-10-15 00:06:16,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-10-15 00:06:16,447 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-10-15 00:06:16,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 00:06:16,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:16,448 INFO L422 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:16,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-15 00:06:16,449 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:16,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:16,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1655469866, now seen corresponding path program 79 times [2020-10-15 00:06:16,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:16,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349240733] [2020-10-15 00:06:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:18,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:18,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 00:06:18,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2234 [2020-10-15 00:06:18,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:18,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 81 [2020-10-15 00:06:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 00:06:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:22,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:22,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:22,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:22,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:22,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:22,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:22,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:22,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349240733] [2020-10-15 00:06:22,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:22,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-10-15 00:06:22,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474774702] [2020-10-15 00:06:22,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-10-15 00:06:22,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:22,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-10-15 00:06:22,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-10-15 00:06:22,667 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 82 states. [2020-10-15 00:06:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:22,841 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2020-10-15 00:06:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-15 00:06:22,841 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 90 [2020-10-15 00:06:22,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:22,842 INFO L225 Difference]: With dead ends: 98 [2020-10-15 00:06:22,842 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 00:06:22,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-10-15 00:06:22,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 00:06:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-15 00:06:22,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-15 00:06:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2020-10-15 00:06:22,845 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 90 [2020-10-15 00:06:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:22,845 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2020-10-15 00:06:22,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-10-15 00:06:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2020-10-15 00:06:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 00:06:22,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:22,846 INFO L422 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:22,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-15 00:06:22,846 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:22,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:22,846 INFO L82 PathProgramCache]: Analyzing trace with hash -184503946, now seen corresponding path program 80 times [2020-10-15 00:06:22,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:22,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136382746] [2020-10-15 00:06:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 00:06:24,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:24,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2105 [2020-10-15 00:06:24,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 82 [2020-10-15 00:06:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 00:06:24,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:29,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:29,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:29,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:29,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:29,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:29,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:29,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:29,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136382746] [2020-10-15 00:06:29,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:29,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-10-15 00:06:29,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539025401] [2020-10-15 00:06:29,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-10-15 00:06:29,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:29,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-10-15 00:06:29,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-10-15 00:06:29,066 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 83 states. [2020-10-15 00:06:29,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:29,263 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2020-10-15 00:06:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-10-15 00:06:29,263 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 91 [2020-10-15 00:06:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:29,264 INFO L225 Difference]: With dead ends: 99 [2020-10-15 00:06:29,264 INFO L226 Difference]: Without dead ends: 94 [2020-10-15 00:06:29,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-10-15 00:06:29,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-15 00:06:29,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-10-15 00:06:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-15 00:06:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2020-10-15 00:06:29,267 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 91 [2020-10-15 00:06:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:29,267 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2020-10-15 00:06:29,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-10-15 00:06:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2020-10-15 00:06:29,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 00:06:29,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:29,267 INFO L422 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:29,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-15 00:06:29,268 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:29,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:29,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1389117270, now seen corresponding path program 81 times [2020-10-15 00:06:29,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:29,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12437250] [2020-10-15 00:06:29,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:29,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:31,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:31,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 00:06:31,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2204 [2020-10-15 00:06:31,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:31,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 83 [2020-10-15 00:06:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 00:06:31,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:35,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:35,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:35,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:35,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:35,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:35,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:35,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:35,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:35,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12437250] [2020-10-15 00:06:35,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:35,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-10-15 00:06:35,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455128790] [2020-10-15 00:06:35,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-10-15 00:06:35,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:35,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-10-15 00:06:35,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-10-15 00:06:35,708 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 84 states. [2020-10-15 00:06:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:35,899 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2020-10-15 00:06:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-15 00:06:35,900 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 92 [2020-10-15 00:06:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:35,901 INFO L225 Difference]: With dead ends: 100 [2020-10-15 00:06:35,901 INFO L226 Difference]: Without dead ends: 95 [2020-10-15 00:06:35,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-10-15 00:06:35,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-15 00:06:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-15 00:06:35,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-15 00:06:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-15 00:06:35,907 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2020-10-15 00:06:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:35,908 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-15 00:06:35,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-10-15 00:06:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-15 00:06:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 00:06:35,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:35,909 INFO L422 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:35,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-15 00:06:35,909 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:35,910 INFO L82 PathProgramCache]: Analyzing trace with hash -77424650, now seen corresponding path program 82 times [2020-10-15 00:06:35,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:35,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195627017] [2020-10-15 00:06:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:38,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:38,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 00:06:38,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2503 [2020-10-15 00:06:38,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:38,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 84 [2020-10-15 00:06:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 00:06:38,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:42,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:42,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:42,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:42,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:42,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:42,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:42,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:42,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195627017] [2020-10-15 00:06:42,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:42,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-10-15 00:06:42,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548542065] [2020-10-15 00:06:42,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-10-15 00:06:42,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:42,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-10-15 00:06:42,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-10-15 00:06:42,781 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 85 states. [2020-10-15 00:06:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:42,977 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2020-10-15 00:06:42,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-15 00:06:42,978 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 93 [2020-10-15 00:06:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:42,978 INFO L225 Difference]: With dead ends: 101 [2020-10-15 00:06:42,978 INFO L226 Difference]: Without dead ends: 96 [2020-10-15 00:06:42,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-10-15 00:06:42,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-15 00:06:42,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-15 00:06:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-15 00:06:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2020-10-15 00:06:42,982 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 93 [2020-10-15 00:06:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:42,982 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2020-10-15 00:06:42,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-10-15 00:06:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2020-10-15 00:06:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 00:06:42,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:42,983 INFO L422 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:42,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-15 00:06:42,984 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:42,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:42,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1930340906, now seen corresponding path program 83 times [2020-10-15 00:06:42,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:42,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651850389] [2020-10-15 00:06:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:43,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:45,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:45,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 00:06:45,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2355 [2020-10-15 00:06:45,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:45,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 85 [2020-10-15 00:06:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 00:06:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:49,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:49,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:49,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:49,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:49,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:49,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:49,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651850389] [2020-10-15 00:06:49,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:49,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-10-15 00:06:49,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738333411] [2020-10-15 00:06:49,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-10-15 00:06:49,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:49,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-10-15 00:06:49,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-10-15 00:06:49,911 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 86 states. [2020-10-15 00:06:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:50,150 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-10-15 00:06:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-15 00:06:50,150 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 94 [2020-10-15 00:06:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:50,151 INFO L225 Difference]: With dead ends: 102 [2020-10-15 00:06:50,151 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 00:06:50,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-10-15 00:06:50,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 00:06:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-15 00:06:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 00:06:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2020-10-15 00:06:50,155 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 94 [2020-10-15 00:06:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:50,155 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2020-10-15 00:06:50,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-10-15 00:06:50,156 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2020-10-15 00:06:50,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 00:06:50,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:50,157 INFO L422 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:50,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-15 00:06:50,157 INFO L427 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:50,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:50,157 INFO L82 PathProgramCache]: Analyzing trace with hash -253436298, now seen corresponding path program 84 times [2020-10-15 00:06:50,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:50,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990230178] [2020-10-15 00:06:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:50,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:52,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 00:06:52,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2356 [2020-10-15 00:06:52,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:52,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 86 [2020-10-15 00:06:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 00:06:52,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:57,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:57,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:57,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990230178] [2020-10-15 00:06:57,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:57,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-10-15 00:06:57,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570236593] [2020-10-15 00:06:57,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-10-15 00:06:57,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:57,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-10-15 00:06:57,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-10-15 00:06:57,133 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 87 states. [2020-10-15 00:06:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:57,297 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2020-10-15 00:06:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-10-15 00:06:57,299 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 95 [2020-10-15 00:06:57,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:57,299 INFO L225 Difference]: With dead ends: 103 [2020-10-15 00:06:57,299 INFO L226 Difference]: Without dead ends: 98 [2020-10-15 00:06:57,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-10-15 00:06:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-15 00:06:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-15 00:06:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-15 00:06:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-10-15 00:06:57,303 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 95 [2020-10-15 00:06:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:57,303 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-10-15 00:06:57,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-10-15 00:06:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-10-15 00:06:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 00:06:57,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:57,304 INFO L422 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:57,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-15 00:06:57,304 INFO L427 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:57,305 INFO L82 PathProgramCache]: Analyzing trace with hash 768947114, now seen corresponding path program 85 times [2020-10-15 00:06:57,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:57,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169884762] [2020-10-15 00:06:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:59,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:59,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 00:06:59,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:59,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2555 [2020-10-15 00:06:59,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:59,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 87 [2020-10-15 00:06:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 00:06:59,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:04,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:04,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:04,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:04,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:04,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:04,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:04,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:04,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:04,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169884762] [2020-10-15 00:07:04,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:04,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-15 00:07:04,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717859002] [2020-10-15 00:07:04,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-15 00:07:04,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:04,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-15 00:07:04,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-10-15 00:07:04,710 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 88 states. [2020-10-15 00:07:04,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:04,943 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-10-15 00:07:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-15 00:07:04,943 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 96 [2020-10-15 00:07:04,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:04,944 INFO L225 Difference]: With dead ends: 104 [2020-10-15 00:07:04,944 INFO L226 Difference]: Without dead ends: 99 [2020-10-15 00:07:04,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-10-15 00:07:04,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-15 00:07:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-15 00:07:04,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-15 00:07:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-15 00:07:04,947 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 96 [2020-10-15 00:07:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:04,948 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-15 00:07:04,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-15 00:07:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-15 00:07:04,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 00:07:04,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:04,949 INFO L422 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:04,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-10-15 00:07:04,949 INFO L427 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:04,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:04,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1896905482, now seen corresponding path program 86 times [2020-10-15 00:07:04,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:04,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877315867] [2020-10-15 00:07:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:07,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 00:07:07,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:07,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2518 [2020-10-15 00:07:07,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:07,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:07,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 88 [2020-10-15 00:07:07,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:07:07,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 00:07:07,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:12,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:12,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:12,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:12,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:12,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:12,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:12,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:12,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877315867] [2020-10-15 00:07:12,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:12,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-10-15 00:07:12,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694382628] [2020-10-15 00:07:12,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-10-15 00:07:12,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:12,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-10-15 00:07:12,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-10-15 00:07:12,307 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 89 states. [2020-10-15 00:07:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:12,457 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2020-10-15 00:07:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-10-15 00:07:12,458 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 97 [2020-10-15 00:07:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:12,459 INFO L225 Difference]: With dead ends: 105 [2020-10-15 00:07:12,459 INFO L226 Difference]: Without dead ends: 100 [2020-10-15 00:07:12,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-10-15 00:07:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-15 00:07:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-15 00:07:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-15 00:07:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2020-10-15 00:07:12,462 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 97 [2020-10-15 00:07:12,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:12,463 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2020-10-15 00:07:12,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-10-15 00:07:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2020-10-15 00:07:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 00:07:12,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:12,464 INFO L422 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:12,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2020-10-15 00:07:12,464 INFO L427 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:12,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:12,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1361009962, now seen corresponding path program 87 times [2020-10-15 00:07:12,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:12,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648713233] [2020-10-15 00:07:12,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:12,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:15,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 00:07:15,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2680 [2020-10-15 00:07:15,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:15,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 89 [2020-10-15 00:07:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:07:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 00:07:15,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:20,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:20,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:20,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:20,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:20,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:20,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:20,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648713233] [2020-10-15 00:07:20,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:20,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-10-15 00:07:20,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859744804] [2020-10-15 00:07:20,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-10-15 00:07:20,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:20,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-10-15 00:07:20,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-10-15 00:07:20,100 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 90 states. [2020-10-15 00:07:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:20,318 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-10-15 00:07:20,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-10-15 00:07:20,319 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 98 [2020-10-15 00:07:20,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:20,319 INFO L225 Difference]: With dead ends: 106 [2020-10-15 00:07:20,320 INFO L226 Difference]: Without dead ends: 101 [2020-10-15 00:07:20,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-10-15 00:07:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-15 00:07:20,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-15 00:07:20,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-15 00:07:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-15 00:07:20,322 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2020-10-15 00:07:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:20,322 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-15 00:07:20,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-10-15 00:07:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-15 00:07:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 00:07:20,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:20,323 INFO L422 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:20,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-15 00:07:20,323 INFO L427 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:20,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:20,323 INFO L82 PathProgramCache]: Analyzing trace with hash -722826378, now seen corresponding path program 88 times [2020-10-15 00:07:20,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:20,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425567312] [2020-10-15 00:07:20,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:22,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 00:07:22,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2587 [2020-10-15 00:07:22,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:22,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 90 [2020-10-15 00:07:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:07:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 00:07:22,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:27,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:27,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:27,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425567312] [2020-10-15 00:07:27,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:27,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2020-10-15 00:07:27,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474952980] [2020-10-15 00:07:27,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-10-15 00:07:27,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:27,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-10-15 00:07:27,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-10-15 00:07:27,983 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 91 states. [2020-10-15 00:07:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:28,177 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2020-10-15 00:07:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-15 00:07:28,178 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 99 [2020-10-15 00:07:28,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:28,179 INFO L225 Difference]: With dead ends: 107 [2020-10-15 00:07:28,179 INFO L226 Difference]: Without dead ends: 102 [2020-10-15 00:07:28,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-10-15 00:07:28,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-15 00:07:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-15 00:07:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-15 00:07:28,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2020-10-15 00:07:28,184 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 99 [2020-10-15 00:07:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:28,184 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2020-10-15 00:07:28,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-10-15 00:07:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2020-10-15 00:07:28,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 00:07:28,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:28,186 INFO L422 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:28,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-15 00:07:28,186 INFO L427 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:28,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:28,187 INFO L82 PathProgramCache]: Analyzing trace with hash -897243478, now seen corresponding path program 89 times [2020-10-15 00:07:28,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:28,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775222523] [2020-10-15 00:07:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:31,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:31,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 00:07:31,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3643 [2020-10-15 00:07:31,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:31,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 91 [2020-10-15 00:07:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:07:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 00:07:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0