/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/array-tiling/rewnif.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:30:00,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:30:00,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:30:00,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:30:00,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:30:00,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:30:00,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:30:00,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:30:00,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:30:00,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:30:00,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:30:00,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:30:00,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:30:00,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:30:00,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:30:00,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:30:00,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:30:00,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:30:00,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:30:00,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:30:00,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:30:00,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:30:00,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:30:00,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:30:00,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:30:00,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:30:00,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:30:00,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:30:00,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:30:00,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:30:00,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:30:00,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:30:00,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:30:00,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:30:00,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:30:00,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:30:00,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:30:00,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:30:00,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:30:00,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:30:00,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:30:00,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 18:30:00,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:30:00,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:30:00,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:30:00,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:30:00,623 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:30:00,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:30:00,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:30:00,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:30:00,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:30:00,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:30:00,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:30:00,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:30:00,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:30:00,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:30:00,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:30:00,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:30:00,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:30:00,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:30:00,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:30:00,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:30:00,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:30:00,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:30:00,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:30:00,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:30:00,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:30:00,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:30:00,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:30:00,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:30:00,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:30:00,630 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; [2020-10-14 18:30:00,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:30:00,942 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:30:00,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:30:00,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:30:00,948 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:30:00,949 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnif.c [2020-10-14 18:30:01,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507a05267/716aa2ebe69c415d965782ce78d8a316/FLAGf42f80f04 [2020-10-14 18:30:01,496 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:30:01,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rewnif.c [2020-10-14 18:30:01,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507a05267/716aa2ebe69c415d965782ce78d8a316/FLAGf42f80f04 [2020-10-14 18:30:01,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507a05267/716aa2ebe69c415d965782ce78d8a316 [2020-10-14 18:30:01,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:30:01,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:30:01,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:30:01,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:30:01,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:30:01,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:30:01" (1/1) ... [2020-10-14 18:30:01,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786a7c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:01, skipping insertion in model container [2020-10-14 18:30:01,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:30:01" (1/1) ... [2020-10-14 18:30:01,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:30:01,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:30:02,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:30:02,125 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:30:02,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:30:02,161 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:30:02,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:02 WrapperNode [2020-10-14 18:30:02,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:30:02,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:30:02,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:30:02,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:30:02,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:02" (1/1) ... [2020-10-14 18:30:02,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:02" (1/1) ... [2020-10-14 18:30:02,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:02" (1/1) ... [2020-10-14 18:30:02,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:02" (1/1) ... [2020-10-14 18:30:02,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:02" (1/1) ... [2020-10-14 18:30:02,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:02" (1/1) ... [2020-10-14 18:30:02,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:02" (1/1) ... [2020-10-14 18:30:02,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:30:02,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:30:02,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:30:02,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:30:02,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:30:02,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:30:02,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:30:02,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:30:02,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:30:02,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:30:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:30:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:30:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:30:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:30:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:30:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 18:30:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:30:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 18:30:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:30:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:30:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:30:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:30:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:30:02,640 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:30:02,641 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:30:02,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:30:02 BoogieIcfgContainer [2020-10-14 18:30:02,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:30:02,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:30:02,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:30:02,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:30:02,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:30:01" (1/3) ... [2020-10-14 18:30:02,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3e36e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:30:02, skipping insertion in model container [2020-10-14 18:30:02,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:30:02" (2/3) ... [2020-10-14 18:30:02,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3e36e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:30:02, skipping insertion in model container [2020-10-14 18:30:02,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:30:02" (3/3) ... [2020-10-14 18:30:02,655 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnif.c [2020-10-14 18:30:02,666 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:30:02,674 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:30:02,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:30:02,716 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:30:02,717 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:30:02,717 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:30:02,717 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:30:02,717 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:30:02,717 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:30:02,718 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:30:02,718 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:30:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 18:30:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 18:30:02,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:02,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:02,745 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:02,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1564765221, now seen corresponding path program 1 times [2020-10-14 18:30:02,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:02,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684487510] [2020-10-14 18:30:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:03,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:03,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 18:30:03,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 18:30:03,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:03,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:30:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:30:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:03,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:03,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:03,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:03,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:30:03,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:03,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:30:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:30:03,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684487510] [2020-10-14 18:30:03,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:30:03,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:30:03,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961561155] [2020-10-14 18:30:03,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:30:03,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:03,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:30:03,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:30:03,259 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-14 18:30:03,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:03,405 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2020-10-14 18:30:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:30:03,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 18:30:03,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:03,417 INFO L225 Difference]: With dead ends: 51 [2020-10-14 18:30:03,417 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 18:30:03,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:30:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 18:30:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-14 18:30:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 18:30:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-14 18:30:03,466 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2020-10-14 18:30:03,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:03,467 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-14 18:30:03,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:30:03,467 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-14 18:30:03,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 18:30:03,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:03,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:03,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:30:03,469 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:03,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1138009376, now seen corresponding path program 1 times [2020-10-14 18:30:03,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:03,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405142680] [2020-10-14 18:30:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:04,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:04,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 18:30:04,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:30:04,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-14 18:30:04,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:04,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:04,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:30:04,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:30:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:04,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:04,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:04,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:04,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:04,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:30:04,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:04,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:04,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:30:04,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405142680] [2020-10-14 18:30:04,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:04,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:30:04,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533292693] [2020-10-14 18:30:04,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:30:04,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:04,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:30:04,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:30:04,246 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 9 states. [2020-10-14 18:30:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:04,518 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-14 18:30:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:30:04,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-14 18:30:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:04,523 INFO L225 Difference]: With dead ends: 45 [2020-10-14 18:30:04,523 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 18:30:04,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:30:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 18:30:04,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-10-14 18:30:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 18:30:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 18:30:04,540 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 18 [2020-10-14 18:30:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:04,541 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 18:30:04,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:30:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 18:30:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 18:30:04,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:04,542 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:04,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:30:04,543 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:04,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:04,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2057705317, now seen corresponding path program 2 times [2020-10-14 18:30:04,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:04,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815846533] [2020-10-14 18:30:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:04,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:04,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:04,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 18:30:04,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:04,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-14 18:30:04,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:04,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:04,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:30:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:30:04,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:05,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:05,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:05,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:05,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:05,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:05,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:05,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:05,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:30:05,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815846533] [2020-10-14 18:30:05,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:05,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:30:05,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686558401] [2020-10-14 18:30:05,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:30:05,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:05,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:30:05,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:30:05,111 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 11 states. [2020-10-14 18:30:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:05,401 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-14 18:30:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:30:05,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-14 18:30:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:05,406 INFO L225 Difference]: With dead ends: 67 [2020-10-14 18:30:05,407 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 18:30:05,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:30:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 18:30:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-10-14 18:30:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 18:30:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-14 18:30:05,419 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 22 [2020-10-14 18:30:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:05,419 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-14 18:30:05,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:30:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-14 18:30:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 18:30:05,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:05,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:05,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:30:05,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:05,422 INFO L82 PathProgramCache]: Analyzing trace with hash -512489001, now seen corresponding path program 1 times [2020-10-14 18:30:05,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:05,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586901255] [2020-10-14 18:30:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:05,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:05,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:05,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 18:30:05,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 18:30:05,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:05,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:30:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:05,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:05,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:05,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:05,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:05,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:05,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:05,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:05,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 18:30:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:05,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:05,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:05,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:05,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:05,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:05,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:05,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:05,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:30:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 18:30:05,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586901255] [2020-10-14 18:30:05,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:05,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:30:05,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946843090] [2020-10-14 18:30:05,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:30:05,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:05,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:30:05,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:30:05,589 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2020-10-14 18:30:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:05,677 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-10-14 18:30:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:30:05,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-14 18:30:05,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:05,679 INFO L225 Difference]: With dead ends: 56 [2020-10-14 18:30:05,679 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 18:30:05,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:30:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 18:30:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-14 18:30:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 18:30:05,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-14 18:30:05,687 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 26 [2020-10-14 18:30:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:05,687 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-14 18:30:05,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:30:05,687 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-14 18:30:05,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 18:30:05,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:05,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:05,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:30:05,689 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:05,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:05,690 INFO L82 PathProgramCache]: Analyzing trace with hash 860550806, now seen corresponding path program 3 times [2020-10-14 18:30:05,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:05,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553234111] [2020-10-14 18:30:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:05,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:06,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 18:30:06,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-14 18:30:06,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:06,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:30:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 18:30:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:06,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:06,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:06,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:06,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:06,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:06,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:06,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:30:06,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553234111] [2020-10-14 18:30:06,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:06,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:30:06,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322425688] [2020-10-14 18:30:06,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:30:06,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:06,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:30:06,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:30:06,385 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 12 states. [2020-10-14 18:30:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:06,667 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-14 18:30:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:30:06,668 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-14 18:30:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:06,669 INFO L225 Difference]: With dead ends: 49 [2020-10-14 18:30:06,669 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 18:30:06,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:30:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 18:30:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2020-10-14 18:30:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 18:30:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-14 18:30:06,677 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 26 [2020-10-14 18:30:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:06,677 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-14 18:30:06,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:30:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-14 18:30:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 18:30:06,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:06,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:06,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:30:06,679 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:06,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:06,679 INFO L82 PathProgramCache]: Analyzing trace with hash -202923438, now seen corresponding path program 2 times [2020-10-14 18:30:06,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:06,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110818156] [2020-10-14 18:30:06,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:06,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 18:30:06,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:06,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-14 18:30:06,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:06,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:06,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:30:06,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:06,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 18:30:06,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:07,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:07,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:07,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:07,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:07,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:07,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 18:30:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:07,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:07,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:07,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:07,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:30:07,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:07,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:07,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:07,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:07,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:30:07,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110818156] [2020-10-14 18:30:07,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:07,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:30:07,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137469809] [2020-10-14 18:30:07,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:30:07,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:07,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:30:07,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:30:07,174 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2020-10-14 18:30:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:07,758 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2020-10-14 18:30:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:30:07,760 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 18:30:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:07,761 INFO L225 Difference]: With dead ends: 65 [2020-10-14 18:30:07,761 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 18:30:07,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:30:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 18:30:07,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 49. [2020-10-14 18:30:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 18:30:07,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-14 18:30:07,773 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 30 [2020-10-14 18:30:07,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:07,774 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-14 18:30:07,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:30:07,774 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-14 18:30:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 18:30:07,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:07,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:07,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:30:07,778 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:07,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:07,779 INFO L82 PathProgramCache]: Analyzing trace with hash -107707059, now seen corresponding path program 3 times [2020-10-14 18:30:07,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:07,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261483667] [2020-10-14 18:30:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:07,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:07,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:08,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:08,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 18:30:08,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:08,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-14 18:30:08,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:08,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:30:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 18:30:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:08,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:08,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:08,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:08,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:08,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:08,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:08,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:08,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:30:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:08,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:08,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:08,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:08,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:08,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:30:08,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:08,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:30:08,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261483667] [2020-10-14 18:30:08,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:08,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:30:08,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433642256] [2020-10-14 18:30:08,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:30:08,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:08,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:30:08,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:30:08,622 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 14 states. [2020-10-14 18:30:09,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:09,192 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2020-10-14 18:30:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:30:09,193 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-14 18:30:09,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:09,194 INFO L225 Difference]: With dead ends: 91 [2020-10-14 18:30:09,194 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 18:30:09,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:30:09,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 18:30:09,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 53. [2020-10-14 18:30:09,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 18:30:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-10-14 18:30:09,219 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 34 [2020-10-14 18:30:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:09,220 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-10-14 18:30:09,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:30:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-10-14 18:30:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 18:30:09,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:09,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:09,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:30:09,223 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:09,225 INFO L82 PathProgramCache]: Analyzing trace with hash -157829879, now seen corresponding path program 4 times [2020-10-14 18:30:09,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:09,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144689094] [2020-10-14 18:30:09,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:09,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:09,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:09,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:09,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 18:30:09,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:09,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-14 18:30:09,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:09,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:30:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 18:30:09,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:09,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:09,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:09,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:09,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:09,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:09,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:09,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 18:30:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:09,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:09,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:09,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:09,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:09,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:09,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:09,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:09,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:30:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:09,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:09,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:09,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:09,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:09,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:09,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:09,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:09,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:09,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:09,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:09,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:30:09,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144689094] [2020-10-14 18:30:09,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:09,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:30:09,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370148251] [2020-10-14 18:30:09,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:30:09,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:09,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:30:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:30:09,641 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 10 states. [2020-10-14 18:30:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:09,966 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2020-10-14 18:30:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:30:09,967 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-14 18:30:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:09,969 INFO L225 Difference]: With dead ends: 129 [2020-10-14 18:30:09,969 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 18:30:09,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:30:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 18:30:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2020-10-14 18:30:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 18:30:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-14 18:30:09,990 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 38 [2020-10-14 18:30:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:09,992 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-14 18:30:09,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:30:09,992 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-14 18:30:09,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 18:30:09,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:09,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:09,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:30:09,995 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:09,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:09,996 INFO L82 PathProgramCache]: Analyzing trace with hash -942574904, now seen corresponding path program 5 times [2020-10-14 18:30:09,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:09,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832261183] [2020-10-14 18:30:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:10,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:10,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:10,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 18:30:10,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:10,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-14 18:30:10,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:10,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:10,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:30:10,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:10,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:30:10,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:10,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:10,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:10,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:10,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:10,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:10,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:10,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:10,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:10,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:30:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:10,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:10,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:10,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:10,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:10,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:30:10,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832261183] [2020-10-14 18:30:10,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:10,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:30:10,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022616219] [2020-10-14 18:30:10,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:30:10,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:10,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:30:10,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:30:10,840 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 15 states. [2020-10-14 18:30:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:11,348 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-10-14 18:30:11,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:30:11,349 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-14 18:30:11,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:11,350 INFO L225 Difference]: With dead ends: 71 [2020-10-14 18:30:11,351 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 18:30:11,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:30:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 18:30:11,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 48. [2020-10-14 18:30:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 18:30:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-14 18:30:11,367 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 38 [2020-10-14 18:30:11,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:11,367 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-14 18:30:11,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:30:11,367 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-14 18:30:11,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 18:30:11,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:11,374 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:11,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:30:11,375 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:11,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:11,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1499163908, now seen corresponding path program 6 times [2020-10-14 18:30:11,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:11,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100806197] [2020-10-14 18:30:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:11,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:11,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:11,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:11,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 18:30:11,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-14 18:30:11,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:11,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:30:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 18:30:11,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:11,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:11,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:11,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:11,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:11,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:11,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:11,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:30:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:11,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:11,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:11,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:11,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:11,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:11,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:11,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:11,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:11,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:11,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:11,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:30:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:11,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:11,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:11,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:11,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:11,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:11,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:30:11,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100806197] [2020-10-14 18:30:11,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:11,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:30:11,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953197680] [2020-10-14 18:30:11,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:30:11,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:11,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:30:11,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:30:11,997 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 13 states. [2020-10-14 18:30:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:12,542 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-10-14 18:30:12,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:30:12,545 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-14 18:30:12,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:12,547 INFO L225 Difference]: With dead ends: 87 [2020-10-14 18:30:12,547 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 18:30:12,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:30:12,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 18:30:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2020-10-14 18:30:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 18:30:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2020-10-14 18:30:12,568 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 42 [2020-10-14 18:30:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:12,568 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2020-10-14 18:30:12,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:30:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2020-10-14 18:30:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 18:30:12,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:12,572 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:12,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:30:12,572 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:12,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1019433089, now seen corresponding path program 7 times [2020-10-14 18:30:12,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:12,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777902292] [2020-10-14 18:30:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:12,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 18:30:13,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:13,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-14 18:30:13,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:30:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 18:30:13,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:30:13,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:13,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:13,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:13,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:13,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:30:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:13,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:13,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:13,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:13,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:13,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:13,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:30:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:13,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:13,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:13,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:30:13,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:30:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:30:13,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777902292] [2020-10-14 18:30:13,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:13,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:30:13,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77749740] [2020-10-14 18:30:13,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:30:13,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:13,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:30:13,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:30:13,504 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 16 states. [2020-10-14 18:30:14,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:14,403 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2020-10-14 18:30:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:30:14,404 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-14 18:30:14,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:14,406 INFO L225 Difference]: With dead ends: 115 [2020-10-14 18:30:14,406 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 18:30:14,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:30:14,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 18:30:14,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 75. [2020-10-14 18:30:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 18:30:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-14 18:30:14,435 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 46 [2020-10-14 18:30:14,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:14,436 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-14 18:30:14,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:30:14,436 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-14 18:30:14,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 18:30:14,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:14,441 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:14,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:30:14,442 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:14,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:14,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1345760699, now seen corresponding path program 8 times [2020-10-14 18:30:14,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:14,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221871450] [2020-10-14 18:30:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:14,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:14,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 18:30:14,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:14,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-14 18:30:14,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:14,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:30:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 18:30:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:14,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:14,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:14,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:14,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:14,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:14,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:30:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:30:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:14,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:14,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:14,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:14,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:14,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:14,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:14,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:30:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:30:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:14,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:14,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:14,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:14,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:14,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:14,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:30:14,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:30:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:14,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:14,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:14,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:14,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:14,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:14,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:14,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:14,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 18:30:15,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221871450] [2020-10-14 18:30:15,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:15,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:30:15,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480409186] [2020-10-14 18:30:15,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:30:15,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:15,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:30:15,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:30:15,012 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 12 states. [2020-10-14 18:30:15,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:15,332 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2020-10-14 18:30:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:30:15,334 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-14 18:30:15,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:15,335 INFO L225 Difference]: With dead ends: 126 [2020-10-14 18:30:15,335 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 18:30:15,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:30:15,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 18:30:15,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2020-10-14 18:30:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 18:30:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2020-10-14 18:30:15,350 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 50 [2020-10-14 18:30:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:15,350 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2020-10-14 18:30:15,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:30:15,350 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2020-10-14 18:30:15,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 18:30:15,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:15,352 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:15,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:30:15,352 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:15,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:15,353 INFO L82 PathProgramCache]: Analyzing trace with hash -42845062, now seen corresponding path program 9 times [2020-10-14 18:30:15,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:15,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057689187] [2020-10-14 18:30:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:15,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 18:30:16,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:16,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-14 18:30:16,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:30:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 18:30:16,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:16,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:16,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:16,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:30:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:16,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:30:16,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:16,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:30:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:16,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:16,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:30:16,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057689187] [2020-10-14 18:30:16,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:16,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:30:16,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660757361] [2020-10-14 18:30:16,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:30:16,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:16,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:30:16,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:30:16,460 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 17 states. [2020-10-14 18:30:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:17,033 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-10-14 18:30:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:30:17,034 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-14 18:30:17,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:17,035 INFO L225 Difference]: With dead ends: 87 [2020-10-14 18:30:17,035 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 18:30:17,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:30:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 18:30:17,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2020-10-14 18:30:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 18:30:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-10-14 18:30:17,048 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 50 [2020-10-14 18:30:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:17,048 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-10-14 18:30:17,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:30:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-10-14 18:30:17,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 18:30:17,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:17,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:17,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:30:17,050 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:17,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:17,051 INFO L82 PathProgramCache]: Analyzing trace with hash 714556726, now seen corresponding path program 10 times [2020-10-14 18:30:17,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:17,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691311165] [2020-10-14 18:30:17,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:17,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:17,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:18,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:18,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 18:30:18,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-14 18:30:18,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:18,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:30:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 18:30:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:18,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:18,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:18,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:18,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:18,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:18,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:18,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:30:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:18,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:18,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:18,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:18,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:18,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:18,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:18,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:18,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:30:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:18,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:18,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:18,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:18,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:18,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:18,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:30:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:18,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:18,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:18,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:18,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:18,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:18,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:18,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:18,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 18:30:18,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691311165] [2020-10-14 18:30:18,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:18,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:30:18,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763031799] [2020-10-14 18:30:18,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:30:18,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:18,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:30:18,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:30:18,337 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 15 states. [2020-10-14 18:30:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:19,227 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-10-14 18:30:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:30:19,228 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-14 18:30:19,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:19,229 INFO L225 Difference]: With dead ends: 103 [2020-10-14 18:30:19,229 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 18:30:19,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:30:19,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 18:30:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2020-10-14 18:30:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 18:30:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-10-14 18:30:19,242 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 54 [2020-10-14 18:30:19,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:19,243 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-10-14 18:30:19,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:30:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-10-14 18:30:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 18:30:19,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:19,244 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:19,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:30:19,244 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash 731490097, now seen corresponding path program 11 times [2020-10-14 18:30:19,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:19,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725851187] [2020-10-14 18:30:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:19,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:19,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:20,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:20,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:30:20,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:20,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-14 18:30:20,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:20,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:30:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 18:30:20,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:20,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:20,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:20,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:20,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:20,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:20,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:20,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:20,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:20,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:30:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:20,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:20,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:20,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:20,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:20,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:20,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:20,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:30:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:20,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:20,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:20,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:20,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:20,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:20,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:20,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:20,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:20,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:30:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:20,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:20,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:20,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:20,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:20,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:20,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:20,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:20,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 18:30:20,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725851187] [2020-10-14 18:30:20,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:20,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:30:20,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708517488] [2020-10-14 18:30:20,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:30:20,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:20,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:30:20,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:30:20,377 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 18 states. [2020-10-14 18:30:21,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:21,268 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-10-14 18:30:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:30:21,269 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-10-14 18:30:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:21,271 INFO L225 Difference]: With dead ends: 135 [2020-10-14 18:30:21,271 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 18:30:21,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:30:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 18:30:21,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 91. [2020-10-14 18:30:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 18:30:21,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-10-14 18:30:21,284 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 58 [2020-10-14 18:30:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:21,285 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-10-14 18:30:21,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:30:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-10-14 18:30:21,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 18:30:21,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:21,286 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:21,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:30:21,286 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:21,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:21,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1769485293, now seen corresponding path program 12 times [2020-10-14 18:30:21,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:21,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071719039] [2020-10-14 18:30:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:21,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:21,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:21,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 18:30:21,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:21,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 18:30:21,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:21,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:21,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:30:21,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:21,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 18:30:21,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:21,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:21,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:21,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:21,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:21,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:21,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:21,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:21,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:30:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:21,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:21,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:21,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:21,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:21,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:21,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:21,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:21,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:21,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:30:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:21,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:21,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:21,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:21,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:21,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:21,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:21,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:30:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:21,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:21,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:21,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:21,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:21,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:21,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:21,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:21,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:21,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:21,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:21,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:21,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:21,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:21,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:21,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 18:30:21,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071719039] [2020-10-14 18:30:21,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:21,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:30:21,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096815126] [2020-10-14 18:30:21,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:30:21,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:21,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:30:21,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:30:21,693 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 14 states. [2020-10-14 18:30:22,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:22,061 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-10-14 18:30:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:30:22,062 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-14 18:30:22,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:22,063 INFO L225 Difference]: With dead ends: 150 [2020-10-14 18:30:22,063 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 18:30:22,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:30:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 18:30:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2020-10-14 18:30:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 18:30:22,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2020-10-14 18:30:22,076 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 62 [2020-10-14 18:30:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:22,076 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2020-10-14 18:30:22,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:30:22,076 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2020-10-14 18:30:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 18:30:22,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:22,077 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:22,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:30:22,077 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:22,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:22,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1079284652, now seen corresponding path program 13 times [2020-10-14 18:30:22,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:22,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758760872] [2020-10-14 18:30:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:22,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:23,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:23,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 18:30:23,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:23,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-10-14 18:30:23,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:23,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:30:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 18:30:23,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:23,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:23,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:23,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:23,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:23,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:23,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:23,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:23,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:30:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:23,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:23,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:23,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:23,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:23,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:23,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:23,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:30:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:23,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:23,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:23,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:23,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:23,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:23,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:23,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:23,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:23,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:23,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:23,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:23,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:23,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:23,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:23,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:23,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:23,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:23,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:23,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:23,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 18:30:23,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758760872] [2020-10-14 18:30:23,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:23,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:30:23,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250556357] [2020-10-14 18:30:23,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:30:23,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:23,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:30:23,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:30:23,591 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 19 states. [2020-10-14 18:30:24,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:24,508 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2020-10-14 18:30:24,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:30:24,509 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-14 18:30:24,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:24,512 INFO L225 Difference]: With dead ends: 103 [2020-10-14 18:30:24,513 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 18:30:24,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:30:24,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 18:30:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72. [2020-10-14 18:30:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 18:30:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-14 18:30:24,526 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 62 [2020-10-14 18:30:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:24,526 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-14 18:30:24,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:30:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-14 18:30:24,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 18:30:24,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:24,533 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:24,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:30:24,533 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:24,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:24,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1784517912, now seen corresponding path program 14 times [2020-10-14 18:30:24,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:24,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38307326] [2020-10-14 18:30:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:24,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:24,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:25,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:25,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 18:30:25,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:25,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-14 18:30:25,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:25,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:30:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 18:30:25,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:25,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:25,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:25,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:25,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:25,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:25,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:25,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:30:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:25,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:25,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:25,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:25,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:25,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:25,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:25,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:30:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:25,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:25,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:25,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:25,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:25,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:25,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:30:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:25,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:25,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:25,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:25,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:25,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:25,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:25,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:30:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:25,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:25,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:25,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:25,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:25,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:25,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:25,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 18:30:25,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38307326] [2020-10-14 18:30:25,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:25,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:30:25,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934374821] [2020-10-14 18:30:25,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:30:25,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:25,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:30:25,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:30:25,703 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 17 states. [2020-10-14 18:30:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:26,674 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2020-10-14 18:30:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:30:26,674 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2020-10-14 18:30:26,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:26,675 INFO L225 Difference]: With dead ends: 119 [2020-10-14 18:30:26,675 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 18:30:26,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:30:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 18:30:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2020-10-14 18:30:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 18:30:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-10-14 18:30:26,691 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 66 [2020-10-14 18:30:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:26,691 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-10-14 18:30:26,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:30:26,692 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-10-14 18:30:26,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 18:30:26,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:26,693 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:26,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:30:26,693 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:26,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:26,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668701, now seen corresponding path program 15 times [2020-10-14 18:30:26,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:26,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035127648] [2020-10-14 18:30:26,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:26,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:27,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 18:30:27,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:27,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-14 18:30:27,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:27,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:27,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:30:27,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:27,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 18:30:27,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:27,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:27,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:27,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:27,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:27,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:27,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:27,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:30:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:27,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:27,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:27,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:27,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:27,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:27,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:27,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:27,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:30:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:27,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:27,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:27,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:27,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:27,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:27,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:27,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:27,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:27,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:27,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:27,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:27,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:30:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:27,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:27,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:27,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:27,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:27,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 98 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 18:30:27,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035127648] [2020-10-14 18:30:27,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:27,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:30:27,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245052714] [2020-10-14 18:30:27,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:30:27,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:27,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:30:27,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:30:27,919 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 20 states. [2020-10-14 18:30:29,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:29,043 INFO L93 Difference]: Finished difference Result 155 states and 173 transitions. [2020-10-14 18:30:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:30:29,044 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 70 [2020-10-14 18:30:29,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:29,045 INFO L225 Difference]: With dead ends: 155 [2020-10-14 18:30:29,045 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 18:30:29,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:30:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 18:30:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 107. [2020-10-14 18:30:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 18:30:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2020-10-14 18:30:29,064 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 70 [2020-10-14 18:30:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:29,065 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2020-10-14 18:30:29,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:30:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2020-10-14 18:30:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 18:30:29,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:29,066 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:29,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:30:29,067 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:29,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1792833633, now seen corresponding path program 16 times [2020-10-14 18:30:29,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:29,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400486874] [2020-10-14 18:30:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:29,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:29,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 18:30:29,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 18:30:29,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:29,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:30:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 18:30:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:29,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:29,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:29,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:29,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:30:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:29,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:29,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:29,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:29,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:29,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:29,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:30:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:29,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:29,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:29,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:29,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:29,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:29,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:29,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:29,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:29,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:30:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:29,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:29,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:29,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:29,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:29,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:30:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:29,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:29,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:29,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:29,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:29,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:30:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:29,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:29,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:29,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:29,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:29,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:30:29,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400486874] [2020-10-14 18:30:29,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:29,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:30:29,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115995078] [2020-10-14 18:30:29,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:30:29,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:29,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:30:29,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:30:29,624 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand 16 states. [2020-10-14 18:30:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:30,077 INFO L93 Difference]: Finished difference Result 174 states and 187 transitions. [2020-10-14 18:30:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:30:30,078 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2020-10-14 18:30:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:30,079 INFO L225 Difference]: With dead ends: 174 [2020-10-14 18:30:30,079 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 18:30:30,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:30:30,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 18:30:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2020-10-14 18:30:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 18:30:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2020-10-14 18:30:30,106 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 74 [2020-10-14 18:30:30,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:30,106 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2020-10-14 18:30:30,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:30:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2020-10-14 18:30:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 18:30:30,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:30,114 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:30,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:30:30,115 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:30,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:30,115 INFO L82 PathProgramCache]: Analyzing trace with hash -734021538, now seen corresponding path program 17 times [2020-10-14 18:30:30,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:30,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68905578] [2020-10-14 18:30:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:31,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:31,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 18:30:31,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-14 18:30:31,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:31,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:30:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 18:30:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:31,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:31,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:31,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:31,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:31,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:31,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:31,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:31,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:30:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:31,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:31,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:31,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:31,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:31,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:31,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:30:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:31,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:31,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:31,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:31,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:31,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:31,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:31,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:31,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:31,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:31,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:30:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:31,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:31,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:31,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:31,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:31,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:31,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:31,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:30:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:31,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:31,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:31,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:31,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:31,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:31,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:31,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:31,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:31,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 8 proven. 123 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 18:30:31,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68905578] [2020-10-14 18:30:31,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:31,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:30:31,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057937245] [2020-10-14 18:30:31,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:30:31,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:31,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:30:31,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:30:31,738 INFO L87 Difference]: Start difference. First operand 107 states and 116 transitions. Second operand 21 states. [2020-10-14 18:30:32,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:32,753 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2020-10-14 18:30:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:30:32,759 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2020-10-14 18:30:32,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:32,763 INFO L225 Difference]: With dead ends: 119 [2020-10-14 18:30:32,763 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 18:30:32,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:30:32,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 18:30:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 84. [2020-10-14 18:30:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 18:30:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-10-14 18:30:32,786 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 74 [2020-10-14 18:30:32,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:32,786 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-10-14 18:30:32,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:30:32,787 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-10-14 18:30:32,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 18:30:32,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:32,788 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:32,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:30:32,788 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:32,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:32,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1344544282, now seen corresponding path program 18 times [2020-10-14 18:30:32,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:32,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491655810] [2020-10-14 18:30:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:32,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:32,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:33,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:33,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 18:30:33,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:33,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-10-14 18:30:33,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:33,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:33,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:30:33,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:33,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 18:30:33,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:34,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:34,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:34,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:34,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:34,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:34,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:34,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:34,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:34,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:34,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:34,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:30:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:34,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:34,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:34,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:34,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:34,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:34,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:34,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:34,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:30:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:34,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:34,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:34,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:34,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:34,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:34,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:34,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:34,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:34,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:34,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:34,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:34,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:34,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:34,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:34,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:30:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:34,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:34,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:34,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:34,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:34,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:34,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:30:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:34,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:34,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:34,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:34,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:34,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:34,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:34,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 10 proven. 116 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:30:34,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491655810] [2020-10-14 18:30:34,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:34,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:30:34,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171175628] [2020-10-14 18:30:34,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:30:34,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:34,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:30:34,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:30:34,245 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 19 states. [2020-10-14 18:30:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:35,518 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-10-14 18:30:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:30:35,522 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-10-14 18:30:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:35,523 INFO L225 Difference]: With dead ends: 135 [2020-10-14 18:30:35,524 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 18:30:35,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:30:35,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 18:30:35,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 119. [2020-10-14 18:30:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 18:30:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2020-10-14 18:30:35,538 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 78 [2020-10-14 18:30:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:35,538 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2020-10-14 18:30:35,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:30:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2020-10-14 18:30:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 18:30:35,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:35,540 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:35,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:30:35,540 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:35,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:35,540 INFO L82 PathProgramCache]: Analyzing trace with hash -743506155, now seen corresponding path program 19 times [2020-10-14 18:30:35,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:35,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614590595] [2020-10-14 18:30:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:35,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:36,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 18:30:36,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1137 [2020-10-14 18:30:36,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:36,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:30:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 18:30:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:37,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:37,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:37,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:37,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:37,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:37,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:37,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:37,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:37,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:30:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:37,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:37,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:37,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:37,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:37,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:37,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:30:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:37,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:37,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:37,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:37,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:37,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:37,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:30:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:37,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:37,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:37,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:37,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:37,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:37,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:37,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:37,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:30:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:37,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:37,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:37,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:37,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:37,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:37,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:37,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:37,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:37,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:37,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:30:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:37,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:37,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:37,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:37,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:37,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:37,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:37,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:37,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:37,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:37,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 10 proven. 141 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:30:37,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614590595] [2020-10-14 18:30:37,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:37,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:30:37,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253435143] [2020-10-14 18:30:37,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:30:37,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:37,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:30:37,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:30:37,090 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand 22 states. [2020-10-14 18:30:38,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:38,495 INFO L93 Difference]: Finished difference Result 175 states and 195 transitions. [2020-10-14 18:30:38,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:30:38,496 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2020-10-14 18:30:38,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:38,499 INFO L225 Difference]: With dead ends: 175 [2020-10-14 18:30:38,499 INFO L226 Difference]: Without dead ends: 173 [2020-10-14 18:30:38,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:30:38,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-14 18:30:38,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 123. [2020-10-14 18:30:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 18:30:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2020-10-14 18:30:38,517 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 82 [2020-10-14 18:30:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:38,517 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2020-10-14 18:30:38,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:30:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2020-10-14 18:30:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 18:30:38,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:38,519 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:38,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:30:38,519 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:38,519 INFO L82 PathProgramCache]: Analyzing trace with hash 228583633, now seen corresponding path program 20 times [2020-10-14 18:30:38,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:38,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195374079] [2020-10-14 18:30:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:38,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:38,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 18:30:38,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:38,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-14 18:30:38,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:38,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:30:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 18:30:38,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:39,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:39,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:39,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:39,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:39,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:39,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:39,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:39,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:39,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:30:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:39,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:39,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:39,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:39,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:30:39,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:39,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:39,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:30:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:39,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:39,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:39,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:39,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:39,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:39,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:39,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:39,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:39,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:39,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:39,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:39,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:30:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:39,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:39,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:39,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:39,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:39,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:39,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:30:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:39,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:39,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:39,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:39,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:39,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:39,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:30:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:39,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:39,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:39,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:39,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 66 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 18:30:39,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195374079] [2020-10-14 18:30:39,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:39,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:30:39,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607944758] [2020-10-14 18:30:39,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:30:39,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:39,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:30:39,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:30:39,203 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand 18 states. [2020-10-14 18:30:39,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:39,699 INFO L93 Difference]: Finished difference Result 198 states and 212 transitions. [2020-10-14 18:30:39,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:30:39,700 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 86 [2020-10-14 18:30:39,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:39,701 INFO L225 Difference]: With dead ends: 198 [2020-10-14 18:30:39,701 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 18:30:39,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:30:39,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 18:30:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2020-10-14 18:30:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 18:30:39,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2020-10-14 18:30:39,718 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 86 [2020-10-14 18:30:39,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:39,719 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2020-10-14 18:30:39,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:30:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2020-10-14 18:30:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 18:30:39,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:39,720 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:39,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:30:39,721 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:39,721 INFO L82 PathProgramCache]: Analyzing trace with hash -459609456, now seen corresponding path program 21 times [2020-10-14 18:30:39,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:39,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914168983] [2020-10-14 18:30:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:39,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:41,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:41,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 18:30:41,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1562 [2020-10-14 18:30:41,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:41,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:30:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 18:30:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:41,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:41,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:41,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:41,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:41,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:41,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:30:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:41,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:41,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:41,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:41,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:41,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:41,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:41,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:41,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:41,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:41,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:30:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:41,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:41,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:41,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:41,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:41,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:30:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:41,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:41,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:41,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:41,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:41,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:41,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:41,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:41,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:41,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:30:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:41,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:41,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:41,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:41,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:41,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:41,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:41,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 10 proven. 170 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:30:41,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914168983] [2020-10-14 18:30:41,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:41,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:30:41,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826344959] [2020-10-14 18:30:41,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:30:41,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:41,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:30:41,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:30:41,927 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand 23 states. [2020-10-14 18:30:43,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:43,306 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-10-14 18:30:43,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:30:43,306 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-10-14 18:30:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:43,308 INFO L225 Difference]: With dead ends: 135 [2020-10-14 18:30:43,308 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 18:30:43,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:30:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 18:30:43,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 96. [2020-10-14 18:30:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 18:30:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2020-10-14 18:30:43,321 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 86 [2020-10-14 18:30:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:43,321 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2020-10-14 18:30:43,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:30:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2020-10-14 18:30:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 18:30:43,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:43,322 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:43,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:30:43,323 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:43,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:43,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1486643508, now seen corresponding path program 22 times [2020-10-14 18:30:43,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:43,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472250760] [2020-10-14 18:30:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:44,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:44,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 18:30:44,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-10-14 18:30:44,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:44,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:30:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 18:30:44,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:44,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:44,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:44,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:44,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:44,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:44,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:44,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:44,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 18:30:44,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:30:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:44,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:44,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:44,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:44,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:44,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:30:44,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:44,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:44,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:44,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:30:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:44,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:44,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:44,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:44,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:44,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:44,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:44,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:44,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:30:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:44,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:44,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:44,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:44,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:44,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:44,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:30:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:44,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:44,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:44,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:44,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:44,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:44,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:44,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:44,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:44,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:30:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:44,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:44,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:44,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:44,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:44,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:44,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:44,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:44,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:44,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:44,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:44,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:30:44,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:30:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:44,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:44,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:44,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:44,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:44,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:44,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:44,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 12 proven. 163 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 18:30:44,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472250760] [2020-10-14 18:30:44,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:44,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:30:44,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425040467] [2020-10-14 18:30:44,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:30:44,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:44,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:30:44,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:30:44,847 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 21 states. [2020-10-14 18:30:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:46,384 INFO L93 Difference]: Finished difference Result 151 states and 164 transitions. [2020-10-14 18:30:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:30:46,385 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-14 18:30:46,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:46,387 INFO L225 Difference]: With dead ends: 151 [2020-10-14 18:30:46,387 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 18:30:46,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:30:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 18:30:46,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 135. [2020-10-14 18:30:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 18:30:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-10-14 18:30:46,403 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 90 [2020-10-14 18:30:46,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:46,403 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-10-14 18:30:46,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:30:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-10-14 18:30:46,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 18:30:46,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:46,405 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:46,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:30:46,405 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:46,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1407852729, now seen corresponding path program 23 times [2020-10-14 18:30:46,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:46,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636979772] [2020-10-14 18:30:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:47,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 18:30:47,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:47,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-14 18:30:47,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:47,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:47,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:30:47,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 18:30:47,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:48,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:48,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:48,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:48,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:48,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:48,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:48,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:48,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:30:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:48,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:48,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:48,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:48,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:48,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:48,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:48,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:48,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:48,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:48,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:48,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:48,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:48,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:48,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:48,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:30:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:48,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:48,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:48,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:48,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:48,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:48,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:48,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:48,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:48,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:30:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:48,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:48,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:48,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:48,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:48,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:30:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:48,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:48,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:48,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:48,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:48,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:48,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:30:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:48,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:48,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:48,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:48,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:48,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:48,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:48,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 192 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 18:30:48,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636979772] [2020-10-14 18:30:48,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:48,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:30:48,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610113568] [2020-10-14 18:30:48,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:30:48,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:48,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:30:48,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:30:48,080 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 24 states. [2020-10-14 18:30:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:49,877 INFO L93 Difference]: Finished difference Result 195 states and 217 transitions. [2020-10-14 18:30:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 18:30:49,878 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 94 [2020-10-14 18:30:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:49,881 INFO L225 Difference]: With dead ends: 195 [2020-10-14 18:30:49,881 INFO L226 Difference]: Without dead ends: 193 [2020-10-14 18:30:49,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:30:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-14 18:30:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 139. [2020-10-14 18:30:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 18:30:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2020-10-14 18:30:49,901 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 94 [2020-10-14 18:30:49,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:49,902 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2020-10-14 18:30:49,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:30:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2020-10-14 18:30:49,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 18:30:49,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:49,904 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:49,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:30:49,904 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:49,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:49,904 INFO L82 PathProgramCache]: Analyzing trace with hash 83138435, now seen corresponding path program 24 times [2020-10-14 18:30:49,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:49,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575164185] [2020-10-14 18:30:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 18:30:50,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 18:30:50,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:50,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:30:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 18:30:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:50,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:50,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:50,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:50,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:50,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:50,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:50,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:30:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:50,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:50,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:50,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:50,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:50,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:50,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:50,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:30:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:50,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:50,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:50,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:50,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:50,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:30:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:50,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:50,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:50,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:50,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:50,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:30:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:50,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:50,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:50,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:50,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:30:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:50,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:50,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:30:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:50,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:50,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:50,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:50,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:50,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:50,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:50,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:30:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:50,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:50,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:50,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:50,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:50,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 112 proven. 91 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 18:30:50,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575164185] [2020-10-14 18:30:50,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:50,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:30:50,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77570106] [2020-10-14 18:30:50,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:30:50,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:50,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:30:50,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:30:50,580 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand 20 states. [2020-10-14 18:30:51,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:51,176 INFO L93 Difference]: Finished difference Result 222 states and 237 transitions. [2020-10-14 18:30:51,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:30:51,176 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 98 [2020-10-14 18:30:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:51,178 INFO L225 Difference]: With dead ends: 222 [2020-10-14 18:30:51,178 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 18:30:51,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:30:51,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 18:30:51,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 139. [2020-10-14 18:30:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 18:30:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2020-10-14 18:30:51,202 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 98 [2020-10-14 18:30:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:51,202 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2020-10-14 18:30:51,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:30:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2020-10-14 18:30:51,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 18:30:51,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:51,214 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:51,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:30:51,214 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:51,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:51,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1804768702, now seen corresponding path program 25 times [2020-10-14 18:30:51,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:51,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657470028] [2020-10-14 18:30:51,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:51,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:52,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:52,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 18:30:52,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-14 18:30:52,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:52,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:30:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 18:30:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:53,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:53,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:53,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:53,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:53,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:53,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:53,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:30:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:53,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:53,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:53,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:53,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:53,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:30:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:53,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:53,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:53,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:53,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:53,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:53,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:53,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:53,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:53,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:30:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:53,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:53,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:53,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:53,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:53,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:53,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:30:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:53,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:53,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:53,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:53,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:53,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:53,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:30:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:53,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:53,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:53,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:53,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:53,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:53,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:53,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:30:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 12 proven. 225 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 18:30:53,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657470028] [2020-10-14 18:30:53,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:53,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:30:53,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541413416] [2020-10-14 18:30:53,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:30:53,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:53,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:30:53,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:30:53,156 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 25 states. [2020-10-14 18:30:54,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:54,835 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2020-10-14 18:30:54,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:30:54,836 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 98 [2020-10-14 18:30:54,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:54,838 INFO L225 Difference]: With dead ends: 151 [2020-10-14 18:30:54,838 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 18:30:54,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 18:30:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 18:30:54,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 108. [2020-10-14 18:30:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 18:30:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2020-10-14 18:30:54,851 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 98 [2020-10-14 18:30:54,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:54,851 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2020-10-14 18:30:54,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:30:54,852 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2020-10-14 18:30:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 18:30:54,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:54,852 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:54,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:30:54,853 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:54,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1874318082, now seen corresponding path program 26 times [2020-10-14 18:30:54,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:54,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372579214] [2020-10-14 18:30:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:54,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 18:30:56,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1180 [2020-10-14 18:30:56,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:30:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 18:30:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:56,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:56,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:56,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:56,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:30:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:56,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:56,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:56,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:56,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:30:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:56,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:56,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:30:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:56,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:56,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:30:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:56,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:56,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:30:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:56,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:56,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:56,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:56,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:30:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 14 proven. 218 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 18:30:56,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372579214] [2020-10-14 18:30:56,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:56,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:30:56,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59035933] [2020-10-14 18:30:56,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:30:56,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:56,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:30:56,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:30:56,515 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 23 states. [2020-10-14 18:30:58,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:58,468 INFO L93 Difference]: Finished difference Result 167 states and 181 transitions. [2020-10-14 18:30:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 18:30:58,469 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2020-10-14 18:30:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:58,470 INFO L225 Difference]: With dead ends: 167 [2020-10-14 18:30:58,471 INFO L226 Difference]: Without dead ends: 165 [2020-10-14 18:30:58,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:30:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-14 18:30:58,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 151. [2020-10-14 18:30:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 18:30:58,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 163 transitions. [2020-10-14 18:30:58,492 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 163 transitions. Word has length 102 [2020-10-14 18:30:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:58,493 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 163 transitions. [2020-10-14 18:30:58,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:30:58,493 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 163 transitions. [2020-10-14 18:30:58,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 18:30:58,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:58,494 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:30:58,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:30:58,495 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:58,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:58,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1955499257, now seen corresponding path program 27 times [2020-10-14 18:30:58,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:58,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877370910] [2020-10-14 18:30:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:58,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:59,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:59,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 18:30:59,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:30:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1368 [2020-10-14 18:30:59,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:59,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:30:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 18:30:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:00,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:00,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:31:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:00,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:00,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:00,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:00,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:00,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:31:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:00,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:00,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:31:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:00,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:00,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:00,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:00,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:31:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:00,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:00,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:00,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:00,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:00,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:31:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:00,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:00,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:00,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:00,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:00,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:00,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 14 proven. 251 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 18:31:00,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877370910] [2020-10-14 18:31:00,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:00,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:31:00,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672834728] [2020-10-14 18:31:00,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:31:00,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:00,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:31:00,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:31:00,421 INFO L87 Difference]: Start difference. First operand 151 states and 163 transitions. Second operand 26 states. [2020-10-14 18:31:02,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:02,620 INFO L93 Difference]: Finished difference Result 215 states and 239 transitions. [2020-10-14 18:31:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 18:31:02,621 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 106 [2020-10-14 18:31:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:02,623 INFO L225 Difference]: With dead ends: 215 [2020-10-14 18:31:02,623 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 18:31:02,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=178, Invalid=1984, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 18:31:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 18:31:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 155. [2020-10-14 18:31:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 18:31:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2020-10-14 18:31:02,647 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 106 [2020-10-14 18:31:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:02,647 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2020-10-14 18:31:02,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:31:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2020-10-14 18:31:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 18:31:02,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:02,660 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:02,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:31:02,662 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:02,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:02,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1261907019, now seen corresponding path program 28 times [2020-10-14 18:31:02,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:02,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110354492] [2020-10-14 18:31:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:31:03,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-14 18:31:03,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:31:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:03,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 18:31:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:03,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:03,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:03,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:03,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:31:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:03,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:03,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:31:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:03,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:03,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:31:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:03,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:31:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:03,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:31:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:03,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:31:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:03,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 144 proven. 120 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 18:31:03,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110354492] [2020-10-14 18:31:03,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:03,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:31:03,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585120006] [2020-10-14 18:31:03,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:31:03,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:03,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:31:03,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:31:03,415 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand 22 states. [2020-10-14 18:31:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:04,147 INFO L93 Difference]: Finished difference Result 246 states and 262 transitions. [2020-10-14 18:31:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:31:04,148 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 110 [2020-10-14 18:31:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:04,149 INFO L225 Difference]: With dead ends: 246 [2020-10-14 18:31:04,149 INFO L226 Difference]: Without dead ends: 167 [2020-10-14 18:31:04,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:31:04,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-14 18:31:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 155. [2020-10-14 18:31:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 18:31:04,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 167 transitions. [2020-10-14 18:31:04,171 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 167 transitions. Word has length 110 [2020-10-14 18:31:04,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:04,171 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 167 transitions. [2020-10-14 18:31:04,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:31:04,171 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 167 transitions. [2020-10-14 18:31:04,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 18:31:04,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:04,172 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:04,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:31:04,173 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:04,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:04,173 INFO L82 PathProgramCache]: Analyzing trace with hash 241071988, now seen corresponding path program 29 times [2020-10-14 18:31:04,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:04,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329980519] [2020-10-14 18:31:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:06,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 18:31:06,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1873 [2020-10-14 18:31:06,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:06,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 18:31:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 18:31:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:06,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:06,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:06,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:06,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:06,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:06,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:06,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:06,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:06,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:06,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:06,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:06,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:06,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:06,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:06,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:06,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:06,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:31:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:06,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:06,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:06,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:06,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:06,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:06,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:06,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:06,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:06,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:06,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:06,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:31:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:06,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:06,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:06,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:06,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:06,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:06,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:06,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:06,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:06,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:06,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:31:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:06,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:06,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:06,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:06,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:06,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:31:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:06,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:06,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:06,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:06,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:06,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:31:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:06,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:06,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:06,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:06,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:06,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:06,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:06,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 14 proven. 288 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 18:31:06,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329980519] [2020-10-14 18:31:06,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:06,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:31:06,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23702577] [2020-10-14 18:31:06,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:31:06,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:06,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:31:06,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:31:06,709 INFO L87 Difference]: Start difference. First operand 155 states and 167 transitions. Second operand 27 states. [2020-10-14 18:31:08,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:08,714 INFO L93 Difference]: Finished difference Result 167 states and 179 transitions. [2020-10-14 18:31:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 18:31:08,715 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 110 [2020-10-14 18:31:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:08,716 INFO L225 Difference]: With dead ends: 167 [2020-10-14 18:31:08,717 INFO L226 Difference]: Without dead ends: 165 [2020-10-14 18:31:08,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=175, Invalid=1987, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 18:31:08,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-14 18:31:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 120. [2020-10-14 18:31:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-14 18:31:08,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2020-10-14 18:31:08,733 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 110 [2020-10-14 18:31:08,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:08,733 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2020-10-14 18:31:08,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:31:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2020-10-14 18:31:08,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 18:31:08,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:08,735 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:08,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:31:08,735 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:08,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:08,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1218901840, now seen corresponding path program 30 times [2020-10-14 18:31:08,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:08,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169283364] [2020-10-14 18:31:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:08,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:08,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:10,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-14 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:11,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:11,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:11,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:11,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:11,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:11,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:11,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:11,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:11,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:11,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:31:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:11,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:11,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:11,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:11,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:11,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:11,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:11,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:11,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:11,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:31:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:11,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:11,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:11,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:11,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:11,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:11,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:11,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:11,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:31:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:11,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:11,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:11,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:11,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:11,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:11,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:11,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:11,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:31:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:11,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:11,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:11,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:11,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:11,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:11,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:11,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:11,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:11,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:11,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:11,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:11,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:11,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:11,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:11,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:31:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:11,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:11,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:11,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:11,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:11,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:11,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:11,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:11,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:11,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:11,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:31:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:11,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:11,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:11,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:11,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:31:11,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:11,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:11,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:11,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:11,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 16 proven. 281 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 18:31:11,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169283364] [2020-10-14 18:31:11,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:11,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:31:11,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617387535] [2020-10-14 18:31:11,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:31:11,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:11,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:31:11,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:31:11,279 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 25 states. [2020-10-14 18:31:13,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:13,967 INFO L93 Difference]: Finished difference Result 183 states and 198 transitions. [2020-10-14 18:31:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 18:31:13,968 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 114 [2020-10-14 18:31:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:13,971 INFO L225 Difference]: With dead ends: 183 [2020-10-14 18:31:13,971 INFO L226 Difference]: Without dead ends: 181 [2020-10-14 18:31:13,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=147, Invalid=1923, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 18:31:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-14 18:31:13,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 167. [2020-10-14 18:31:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 18:31:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 180 transitions. [2020-10-14 18:31:13,998 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 180 transitions. Word has length 114 [2020-10-14 18:31:13,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:13,998 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 180 transitions. [2020-10-14 18:31:13,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:31:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 180 transitions. [2020-10-14 18:31:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 18:31:13,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:14,000 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:14,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 18:31:14,000 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:14,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:14,000 INFO L82 PathProgramCache]: Analyzing trace with hash -595572693, now seen corresponding path program 31 times [2020-10-14 18:31:14,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:14,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542643451] [2020-10-14 18:31:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 18:31:16,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:16,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2015 [2020-10-14 18:31:16,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:31:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 18:31:16,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:16,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:16,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:16,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:16,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:31:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:16,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:16,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:16,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:31:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:16,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:31:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:16,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:16,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:31:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:16,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:31:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 18:31:16,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:16,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:31:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:16,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:16,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:16,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:31:16,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:16,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 16 proven. 318 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 18:31:16,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542643451] [2020-10-14 18:31:16,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:16,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:31:16,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335158369] [2020-10-14 18:31:16,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:31:16,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:16,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:31:16,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:31:16,953 INFO L87 Difference]: Start difference. First operand 167 states and 180 transitions. Second operand 28 states. [2020-10-14 18:31:19,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:19,720 INFO L93 Difference]: Finished difference Result 235 states and 261 transitions. [2020-10-14 18:31:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 18:31:19,721 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 118 [2020-10-14 18:31:19,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:19,724 INFO L225 Difference]: With dead ends: 235 [2020-10-14 18:31:19,724 INFO L226 Difference]: Without dead ends: 233 [2020-10-14 18:31:19,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=188, Invalid=2262, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 18:31:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-14 18:31:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 171. [2020-10-14 18:31:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 18:31:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 186 transitions. [2020-10-14 18:31:19,750 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 186 transitions. Word has length 118 [2020-10-14 18:31:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:19,751 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 186 transitions. [2020-10-14 18:31:19,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:31:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 186 transitions. [2020-10-14 18:31:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 18:31:19,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:19,752 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:19,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 18:31:19,753 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:19,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1852038503, now seen corresponding path program 32 times [2020-10-14 18:31:19,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:19,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368772596] [2020-10-14 18:31:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 18:31:20,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-14 18:31:20,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:31:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 18:31:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:20,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:20,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:20,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:31:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:20,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:20,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:20,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:20,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:20,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:20,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:20,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:20,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:31:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:20,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:20,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:20,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:20,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:31:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:20,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:20,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:31:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:20,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:20,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:20,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:20,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:31:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:20,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:20,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:20,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:20,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:20,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:20,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:20,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:31:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:20,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:20,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:20,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:20,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:31:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:20,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:20,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:20,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:20,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:20,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:20,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 180 proven. 153 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 18:31:20,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368772596] [2020-10-14 18:31:20,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:20,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:31:20,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440761984] [2020-10-14 18:31:20,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:31:20,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:20,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:31:20,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:31:20,595 INFO L87 Difference]: Start difference. First operand 171 states and 186 transitions. Second operand 24 states. [2020-10-14 18:31:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:21,399 INFO L93 Difference]: Finished difference Result 270 states and 287 transitions. [2020-10-14 18:31:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 18:31:21,400 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 122 [2020-10-14 18:31:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:21,402 INFO L225 Difference]: With dead ends: 270 [2020-10-14 18:31:21,402 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 18:31:21,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=293, Invalid=967, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:31:21,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 18:31:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-10-14 18:31:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 18:31:21,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 184 transitions. [2020-10-14 18:31:21,451 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 184 transitions. Word has length 122 [2020-10-14 18:31:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:21,452 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 184 transitions. [2020-10-14 18:31:21,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:31:21,452 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 184 transitions. [2020-10-14 18:31:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 18:31:21,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:21,454 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:21,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 18:31:21,455 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:21,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1800056282, now seen corresponding path program 33 times [2020-10-14 18:31:21,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:21,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087705868] [2020-10-14 18:31:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:21,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:24,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:24,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 18:31:24,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2717 [2020-10-14 18:31:24,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:24,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:24,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 18:31:24,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:24,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 18:31:24,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:25,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:25,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:25,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:25,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:25,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:25,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:25,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:25,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:25,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:25,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:31:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:25,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:25,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:25,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:25,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:25,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:25,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:25,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:25,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:25,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:31:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:25,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:25,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:25,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:25,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:25,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:25,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:31:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:25,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:25,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:25,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:25,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:25,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:25,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:25,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:25,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:25,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:25,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:25,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:25,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:25,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:25,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:25,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:25,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:31:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:25,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:25,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:25,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:25,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:25,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:25,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:25,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:25,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:31:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:25,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:25,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:25,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:31:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:25,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:25,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:25,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:31:25,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:25,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:25,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:25,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 16 proven. 359 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 18:31:25,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087705868] [2020-10-14 18:31:25,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:25,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 18:31:25,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025471301] [2020-10-14 18:31:25,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 18:31:25,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:25,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 18:31:25,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:31:25,300 INFO L87 Difference]: Start difference. First operand 171 states and 184 transitions. Second operand 29 states. [2020-10-14 18:31:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:27,686 INFO L93 Difference]: Finished difference Result 183 states and 196 transitions. [2020-10-14 18:31:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 18:31:27,687 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 122 [2020-10-14 18:31:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:27,688 INFO L225 Difference]: With dead ends: 183 [2020-10-14 18:31:27,688 INFO L226 Difference]: Without dead ends: 181 [2020-10-14 18:31:27,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=185, Invalid=2265, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 18:31:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-14 18:31:27,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 132. [2020-10-14 18:31:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-14 18:31:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2020-10-14 18:31:27,707 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 122 [2020-10-14 18:31:27,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:27,708 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2020-10-14 18:31:27,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 18:31:27,708 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2020-10-14 18:31:27,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 18:31:27,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:27,709 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:27,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 18:31:27,709 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:27,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:27,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1866632734, now seen corresponding path program 34 times [2020-10-14 18:31:27,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:27,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673914349] [2020-10-14 18:31:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 18:31:30,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:30,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2505 [2020-10-14 18:31:30,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:31:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:30,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 18:31:30,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:30,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:30,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:30,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:30,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:30,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:31:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:30,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:30,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:30,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:30,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:31:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:30,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:30,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:30,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:31:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:30,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:30,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:30,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:31:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:30,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:30,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:31:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:30,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:30,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:30,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:31:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:30,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:30,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:31:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:30,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:30,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 18 proven. 352 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 18:31:30,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673914349] [2020-10-14 18:31:30,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:30,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:31:30,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278968400] [2020-10-14 18:31:30,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:31:30,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:30,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:31:30,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:31:30,912 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand 27 states. [2020-10-14 18:31:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:33,680 INFO L93 Difference]: Finished difference Result 199 states and 215 transitions. [2020-10-14 18:31:33,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 18:31:33,681 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 126 [2020-10-14 18:31:33,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:33,683 INFO L225 Difference]: With dead ends: 199 [2020-10-14 18:31:33,683 INFO L226 Difference]: Without dead ends: 197 [2020-10-14 18:31:33,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=2385, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 18:31:33,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-14 18:31:33,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 183. [2020-10-14 18:31:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 18:31:33,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2020-10-14 18:31:33,720 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 126 [2020-10-14 18:31:33,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:33,720 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2020-10-14 18:31:33,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:31:33,721 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2020-10-14 18:31:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 18:31:33,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:33,722 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:33,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 18:31:33,722 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:33,722 INFO L82 PathProgramCache]: Analyzing trace with hash 183652573, now seen corresponding path program 35 times [2020-10-14 18:31:33,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:33,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841160030] [2020-10-14 18:31:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:33,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:33,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:36,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:36,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 18:31:36,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:36,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2929 [2020-10-14 18:31:36,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:36,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:31:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 18:31:36,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:37,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:37,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:37,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:37,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:37,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:37,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:37,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:37,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:31:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:37,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:37,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:37,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:37,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:37,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:31:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:37,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:37,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:37,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:37,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:31:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:37,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:37,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:37,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:37,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:37,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:37,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:37,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:37,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:37,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:37,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:31:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:37,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:37,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:37,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:31:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:37,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:37,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:31:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:37,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:37,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:37,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:37,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:37,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:31:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:37,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:37,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:37,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:37,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:37,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:37,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:37,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 18 proven. 393 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 18:31:37,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841160030] [2020-10-14 18:31:37,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:37,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 18:31:37,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960929114] [2020-10-14 18:31:37,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 18:31:37,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:37,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 18:31:37,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:31:37,750 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand 30 states. [2020-10-14 18:31:40,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:40,760 INFO L93 Difference]: Finished difference Result 249 states and 276 transitions. [2020-10-14 18:31:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 18:31:40,762 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 130 [2020-10-14 18:31:40,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:40,763 INFO L225 Difference]: With dead ends: 249 [2020-10-14 18:31:40,763 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 18:31:40,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=208, Invalid=2762, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 18:31:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 18:31:40,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 187. [2020-10-14 18:31:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 18:31:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 203 transitions. [2020-10-14 18:31:40,788 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 203 transitions. Word has length 130 [2020-10-14 18:31:40,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:40,788 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 203 transitions. [2020-10-14 18:31:40,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 18:31:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 203 transitions. [2020-10-14 18:31:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 18:31:40,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:40,789 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:40,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 18:31:40,789 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:40,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:40,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1431505767, now seen corresponding path program 36 times [2020-10-14 18:31:40,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:40,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023746091] [2020-10-14 18:31:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 18:31:41,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-14 18:31:41,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:31:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 18:31:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:41,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:41,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:41,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:41,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:31:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:41,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:41,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:31:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:41,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:31:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:41,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:31:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:41,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:31:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:41,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:31:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:41,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:31:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:41,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:31:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:41,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 220 proven. 190 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 18:31:41,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023746091] [2020-10-14 18:31:41,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:41,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:31:41,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434037761] [2020-10-14 18:31:41,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:31:41,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:41,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:31:41,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:31:41,887 INFO L87 Difference]: Start difference. First operand 187 states and 203 transitions. Second operand 26 states. [2020-10-14 18:31:42,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:42,889 INFO L93 Difference]: Finished difference Result 294 states and 312 transitions. [2020-10-14 18:31:42,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 18:31:42,890 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 134 [2020-10-14 18:31:42,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:42,891 INFO L225 Difference]: With dead ends: 294 [2020-10-14 18:31:42,891 INFO L226 Difference]: Without dead ends: 199 [2020-10-14 18:31:42,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=343, Invalid=1139, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:31:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-14 18:31:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 187. [2020-10-14 18:31:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 18:31:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2020-10-14 18:31:42,921 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 134 [2020-10-14 18:31:42,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:42,922 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2020-10-14 18:31:42,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:31:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2020-10-14 18:31:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 18:31:42,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:42,923 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:42,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 18:31:42,924 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:42,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1856423336, now seen corresponding path program 37 times [2020-10-14 18:31:42,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:42,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438352625] [2020-10-14 18:31:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:43,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:46,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:46,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 18:31:46,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3519 [2020-10-14 18:31:46,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:46,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 18:31:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 18:31:46,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:47,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:31:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:31:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:31:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:31:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:31:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:31:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:31:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:31:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 18 proven. 438 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 18:31:47,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438352625] [2020-10-14 18:31:47,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:47,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 18:31:47,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124291908] [2020-10-14 18:31:47,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 18:31:47,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:47,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 18:31:47,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:31:47,400 INFO L87 Difference]: Start difference. First operand 187 states and 201 transitions. Second operand 31 states. [2020-10-14 18:31:50,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:50,260 INFO L93 Difference]: Finished difference Result 199 states and 213 transitions. [2020-10-14 18:31:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 18:31:50,261 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 134 [2020-10-14 18:31:50,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:50,262 INFO L225 Difference]: With dead ends: 199 [2020-10-14 18:31:50,262 INFO L226 Difference]: Without dead ends: 197 [2020-10-14 18:31:50,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=200, Invalid=2662, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 18:31:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-14 18:31:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 144. [2020-10-14 18:31:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-14 18:31:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions. [2020-10-14 18:31:50,285 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 134 [2020-10-14 18:31:50,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:50,286 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 146 transitions. [2020-10-14 18:31:50,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 18:31:50,286 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 146 transitions. [2020-10-14 18:31:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 18:31:50,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:50,287 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:50,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 18:31:50,288 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:50,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:50,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1748805780, now seen corresponding path program 38 times [2020-10-14 18:31:50,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:50,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906371667] [2020-10-14 18:31:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 18:31:53,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:53,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2757 [2020-10-14 18:31:53,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 18:31:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 18:31:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:53,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:31:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:31:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:53,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:31:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:31:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:31:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:31:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:31:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:31:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:31:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 20 proven. 431 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 18:31:53,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906371667] [2020-10-14 18:31:53,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:53,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 18:31:53,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394441719] [2020-10-14 18:31:53,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 18:31:53,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:53,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 18:31:53,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:31:53,876 INFO L87 Difference]: Start difference. First operand 144 states and 146 transitions. Second operand 29 states. [2020-10-14 18:31:57,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:57,487 INFO L93 Difference]: Finished difference Result 215 states and 232 transitions. [2020-10-14 18:31:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 18:31:57,489 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 138 [2020-10-14 18:31:57,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:57,491 INFO L225 Difference]: With dead ends: 215 [2020-10-14 18:31:57,491 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 18:31:57,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=178, Invalid=2792, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 18:31:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 18:31:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 199. [2020-10-14 18:31:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 18:31:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 214 transitions. [2020-10-14 18:31:57,523 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 214 transitions. Word has length 138 [2020-10-14 18:31:57,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:57,524 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 214 transitions. [2020-10-14 18:31:57,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 18:31:57,524 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 214 transitions. [2020-10-14 18:31:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 18:31:57,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:57,526 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:57,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 18:31:57,526 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:57,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:57,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1366563057, now seen corresponding path program 39 times [2020-10-14 18:31:57,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:57,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931735073] [2020-10-14 18:31:57,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:57,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:01,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 18:32:01,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:32:01,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3592 [2020-10-14 18:32:01,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:01,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:01,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 18:32:01,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:01,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 18:32:01,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:01,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:01,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:01,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:01,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:01,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:01,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:32:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:01,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:01,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:01,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:01,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:01,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:01,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:01,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:01,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:01,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:01,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:02,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:02,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:02,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:32:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:02,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:02,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:32:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:02,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:02,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:02,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:02,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:32:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:02,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:02,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:32:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:02,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:02,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:32:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:02,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:02,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:32:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:02,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:02,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:02,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:02,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:32:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:02,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:02,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:02,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:02,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:32:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:02,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:02,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:02,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 20 proven. 476 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 18:32:02,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931735073] [2020-10-14 18:32:02,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:02,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 18:32:02,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528145055] [2020-10-14 18:32:02,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 18:32:02,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:02,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 18:32:02,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=923, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:32:02,064 INFO L87 Difference]: Start difference. First operand 199 states and 214 transitions. Second operand 32 states. [2020-10-14 18:32:05,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:05,794 INFO L93 Difference]: Finished difference Result 275 states and 305 transitions. [2020-10-14 18:32:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 18:32:05,795 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 142 [2020-10-14 18:32:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:05,797 INFO L225 Difference]: With dead ends: 275 [2020-10-14 18:32:05,798 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 18:32:05,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=218, Invalid=3088, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 18:32:05,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 18:32:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 203. [2020-10-14 18:32:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-14 18:32:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 220 transitions. [2020-10-14 18:32:05,833 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 220 transitions. Word has length 142 [2020-10-14 18:32:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:05,833 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 220 transitions. [2020-10-14 18:32:05,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 18:32:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 220 transitions. [2020-10-14 18:32:05,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 18:32:05,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:05,835 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:05,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 18:32:05,835 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:05,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:05,836 INFO L82 PathProgramCache]: Analyzing trace with hash 439048523, now seen corresponding path program 40 times [2020-10-14 18:32:05,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:05,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855978146] [2020-10-14 18:32:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:06,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:06,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 18:32:06,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:32:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-14 18:32:06,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:06,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:32:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 18:32:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:07,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:07,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:07,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:32:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:07,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:07,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:32:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:07,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:32:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:07,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:07,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:32:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:07,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:07,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:32:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:07,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:32:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:07,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:07,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:07,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:32:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:07,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:07,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:32:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:07,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:07,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:32:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:07,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:07,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 18:32:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:07,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:07,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:07,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:07,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 264 proven. 231 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 18:32:07,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855978146] [2020-10-14 18:32:07,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:07,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:32:07,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677823841] [2020-10-14 18:32:07,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:32:07,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:07,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:32:07,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:32:07,244 INFO L87 Difference]: Start difference. First operand 203 states and 220 transitions. Second operand 28 states. [2020-10-14 18:32:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:08,422 INFO L93 Difference]: Finished difference Result 318 states and 337 transitions. [2020-10-14 18:32:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:32:08,424 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 146 [2020-10-14 18:32:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:08,425 INFO L225 Difference]: With dead ends: 318 [2020-10-14 18:32:08,425 INFO L226 Difference]: Without dead ends: 215 [2020-10-14 18:32:08,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1325, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 18:32:08,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-14 18:32:08,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 203. [2020-10-14 18:32:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-14 18:32:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2020-10-14 18:32:08,460 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 146 [2020-10-14 18:32:08,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:08,460 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2020-10-14 18:32:08,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:32:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2020-10-14 18:32:08,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 18:32:08,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:08,462 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:08,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 18:32:08,462 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:08,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1513000950, now seen corresponding path program 41 times [2020-10-14 18:32:08,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:08,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523731307] [2020-10-14 18:32:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:12,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:12,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 18:32:12,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:32:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4324 [2020-10-14 18:32:12,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:12,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 18:32:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 18:32:12,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:13,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:32:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:13,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:32:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:13,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:13,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:32:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:32:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:13,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:32:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:13,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:13,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:32:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:13,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:32:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:13,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:32:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:13,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 18:32:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:13,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 20 proven. 525 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 18:32:13,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523731307] [2020-10-14 18:32:13,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:13,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 18:32:13,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940497967] [2020-10-14 18:32:13,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 18:32:13,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:13,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 18:32:13,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=982, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:32:13,940 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand 33 states. [2020-10-14 18:32:17,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:17,387 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions. [2020-10-14 18:32:17,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 18:32:17,388 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 146 [2020-10-14 18:32:17,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:17,389 INFO L225 Difference]: With dead ends: 215 [2020-10-14 18:32:17,389 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 18:32:17,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=220, Invalid=3202, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 18:32:17,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 18:32:17,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 156. [2020-10-14 18:32:17,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-14 18:32:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2020-10-14 18:32:17,406 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 146 [2020-10-14 18:32:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:17,406 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2020-10-14 18:32:17,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 18:32:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2020-10-14 18:32:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 18:32:17,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:17,407 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:17,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 18:32:17,408 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1899883718, now seen corresponding path program 42 times [2020-10-14 18:32:17,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:17,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105071055] [2020-10-14 18:32:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:21,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:21,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 18:32:21,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:32:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4159 [2020-10-14 18:32:21,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:21,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 18:32:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 18:32:21,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:22,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:32:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:22,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:32:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:22,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:32:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:32:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:32:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:22,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:22,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:32:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:22,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:32:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:32:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:32:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:22,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 18:32:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 22 proven. 518 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 18:32:22,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105071055] [2020-10-14 18:32:22,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:22,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 18:32:22,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980113304] [2020-10-14 18:32:22,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 18:32:22,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:22,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 18:32:22,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:32:22,554 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 31 states. [2020-10-14 18:32:26,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:26,625 INFO L93 Difference]: Finished difference Result 231 states and 249 transitions. [2020-10-14 18:32:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 18:32:26,626 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 150 [2020-10-14 18:32:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:26,629 INFO L225 Difference]: With dead ends: 231 [2020-10-14 18:32:26,629 INFO L226 Difference]: Without dead ends: 229 [2020-10-14 18:32:26,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=186, Invalid=3120, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 18:32:26,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-14 18:32:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 215. [2020-10-14 18:32:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-14 18:32:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 231 transitions. [2020-10-14 18:32:26,659 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 231 transitions. Word has length 150 [2020-10-14 18:32:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:26,659 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 231 transitions. [2020-10-14 18:32:26,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 18:32:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 231 transitions. [2020-10-14 18:32:26,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 18:32:26,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:26,661 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:26,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 18:32:26,661 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:26,661 INFO L82 PathProgramCache]: Analyzing trace with hash 227822273, now seen corresponding path program 43 times [2020-10-14 18:32:26,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:26,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371455769] [2020-10-14 18:32:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:26,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4995 [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 18:32:31,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:31,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 18:32:31,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:32,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:32,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:32,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:32:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:32,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:32:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:32,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:32:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:32,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:32:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:32,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:32:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:32,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:32,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:32:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:32,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:32:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:32,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:32:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:32,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 18:32:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:32,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 18:32:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:32,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:32,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:32,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:32,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:32,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:32,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 22 proven. 567 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 18:32:32,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371455769] [2020-10-14 18:32:32,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:32,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 18:32:32,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103529552] [2020-10-14 18:32:32,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 18:32:32,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:32,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 18:32:32,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1049, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:32:32,851 INFO L87 Difference]: Start difference. First operand 215 states and 231 transitions. Second operand 34 states. [2020-10-14 18:32:37,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:37,544 INFO L93 Difference]: Finished difference Result 295 states and 327 transitions. [2020-10-14 18:32:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 18:32:37,546 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 154 [2020-10-14 18:32:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:37,548 INFO L225 Difference]: With dead ends: 295 [2020-10-14 18:32:37,548 INFO L226 Difference]: Without dead ends: 293 [2020-10-14 18:32:37,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=233, Invalid=3549, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 18:32:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-14 18:32:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 219. [2020-10-14 18:32:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-14 18:32:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 237 transitions. [2020-10-14 18:32:37,587 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 237 transitions. Word has length 154 [2020-10-14 18:32:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:37,588 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 237 transitions. [2020-10-14 18:32:37,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 18:32:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 237 transitions. [2020-10-14 18:32:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 18:32:37,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:37,589 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:37,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 18:32:37,590 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:37,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:37,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1257878659, now seen corresponding path program 44 times [2020-10-14 18:32:37,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:37,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168480210] [2020-10-14 18:32:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:37,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:38,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:38,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 18:32:38,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:32:38,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-14 18:32:38,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:38,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:32:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 18:32:38,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:39,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:32:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:32:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:32:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:32:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:32:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:32:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:32:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:32:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:32:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 18:32:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 18:32:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:39,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:39,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:39,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:39,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:39,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:39,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:39,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 312 proven. 276 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 18:32:39,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168480210] [2020-10-14 18:32:39,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:39,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 18:32:39,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338391383] [2020-10-14 18:32:39,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 18:32:39,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:39,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 18:32:39,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:32:39,145 INFO L87 Difference]: Start difference. First operand 219 states and 237 transitions. Second operand 30 states. [2020-10-14 18:32:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:40,530 INFO L93 Difference]: Finished difference Result 342 states and 362 transitions. [2020-10-14 18:32:40,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 18:32:40,531 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 158 [2020-10-14 18:32:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:40,533 INFO L225 Difference]: With dead ends: 342 [2020-10-14 18:32:40,533 INFO L226 Difference]: Without dead ends: 231 [2020-10-14 18:32:40,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=455, Invalid=1525, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 18:32:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-14 18:32:40,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 219. [2020-10-14 18:32:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-14 18:32:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 235 transitions. [2020-10-14 18:32:40,567 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 235 transitions. Word has length 158 [2020-10-14 18:32:40,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:40,567 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 235 transitions. [2020-10-14 18:32:40,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 18:32:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 235 transitions. [2020-10-14 18:32:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 18:32:40,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:40,568 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:40,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 18:32:40,568 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:40,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:40,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1153092804, now seen corresponding path program 45 times [2020-10-14 18:32:40,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:40,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51534361] [2020-10-14 18:32:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:40,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:45,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:45,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 18:32:45,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:32:45,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 18:32:45,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:45,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 18:32:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 18:32:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:47,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:47,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:47,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:32:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:32:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:32:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:32:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:32:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:32:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:32:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:32:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 18:32:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 18:32:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:47,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:47,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:47,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:47,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:47,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 22 proven. 620 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 18:32:47,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51534361] [2020-10-14 18:32:47,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:47,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 18:32:47,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397676849] [2020-10-14 18:32:47,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 18:32:47,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:47,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 18:32:47,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1112, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:32:47,306 INFO L87 Difference]: Start difference. First operand 219 states and 235 transitions. Second operand 35 states. [2020-10-14 18:32:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:52,154 INFO L93 Difference]: Finished difference Result 231 states and 247 transitions. [2020-10-14 18:32:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 18:32:52,155 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 158 [2020-10-14 18:32:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:52,157 INFO L225 Difference]: With dead ends: 231 [2020-10-14 18:32:52,157 INFO L226 Difference]: Without dead ends: 229 [2020-10-14 18:32:52,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=235, Invalid=3671, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 18:32:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-14 18:32:52,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 168. [2020-10-14 18:32:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-14 18:32:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2020-10-14 18:32:52,186 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 158 [2020-10-14 18:32:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:52,186 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2020-10-14 18:32:52,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 18:32:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2020-10-14 18:32:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 18:32:52,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:52,188 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:32:52,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 18:32:52,188 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:52,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:52,189 INFO L82 PathProgramCache]: Analyzing trace with hash -691503496, now seen corresponding path program 46 times [2020-10-14 18:32:52,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:52,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505790139] [2020-10-14 18:32:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:57,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:57,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 18:32:57,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:32:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 18:32:57,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:57,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 18:32:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 18:32:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:58,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:58,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:32:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:58,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:32:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:58,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:32:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:58,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:32:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:58,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:32:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:58,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:58,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:32:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:58,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:32:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:58,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:58,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:32:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:58,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 18:32:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:58,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 18:32:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:58,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 18:32:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:58,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:58,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:58,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 24 proven. 613 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 18:32:58,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505790139] [2020-10-14 18:32:58,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:58,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 18:32:58,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246165733] [2020-10-14 18:32:58,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 18:32:58,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:58,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 18:32:58,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:32:58,801 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand 33 states. [2020-10-14 18:33:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:03,635 INFO L93 Difference]: Finished difference Result 241 states and 259 transitions. [2020-10-14 18:33:03,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 18:33:03,636 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 162 [2020-10-14 18:33:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:03,637 INFO L225 Difference]: With dead ends: 241 [2020-10-14 18:33:03,638 INFO L226 Difference]: Without dead ends: 239 [2020-10-14 18:33:03,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=204, Invalid=3702, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 18:33:03,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-14 18:33:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 231. [2020-10-14 18:33:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-14 18:33:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 248 transitions. [2020-10-14 18:33:03,679 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 248 transitions. Word has length 162 [2020-10-14 18:33:03,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:03,679 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 248 transitions. [2020-10-14 18:33:03,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 18:33:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 248 transitions. [2020-10-14 18:33:03,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 18:33:03,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:03,680 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:03,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 18:33:03,681 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:03,681 INFO L82 PathProgramCache]: Analyzing trace with hash 368229363, now seen corresponding path program 47 times [2020-10-14 18:33:03,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:03,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964018418] [2020-10-14 18:33:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:03,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:08,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:08,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 18:33:08,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:33:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-14 18:33:08,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:08,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 18:33:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 18:33:08,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:10,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:10,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:33:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:10,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:33:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:10,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:33:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:10,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:33:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:10,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:33:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:10,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:33:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:10,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:33:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:10,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:33:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:10,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:33:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:10,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 18:33:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:10,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 18:33:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-14 18:33:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:10,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:10,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:10,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 24 proven. 666 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 18:33:10,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964018418] [2020-10-14 18:33:10,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:10,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 18:33:10,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108197177] [2020-10-14 18:33:10,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 18:33:10,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:10,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 18:33:10,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1183, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:33:10,258 INFO L87 Difference]: Start difference. First operand 231 states and 248 transitions. Second operand 36 states. [2020-10-14 18:33:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:15,823 INFO L93 Difference]: Finished difference Result 315 states and 349 transitions. [2020-10-14 18:33:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 18:33:15,825 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 166 [2020-10-14 18:33:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:15,827 INFO L225 Difference]: With dead ends: 315 [2020-10-14 18:33:15,828 INFO L226 Difference]: Without dead ends: 313 [2020-10-14 18:33:15,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=253, Invalid=4169, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 18:33:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-14 18:33:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 235. [2020-10-14 18:33:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-14 18:33:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 254 transitions. [2020-10-14 18:33:15,874 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 254 transitions. Word has length 166 [2020-10-14 18:33:15,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:15,874 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 254 transitions. [2020-10-14 18:33:15,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 18:33:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 254 transitions. [2020-10-14 18:33:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 18:33:15,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:15,876 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:15,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 18:33:15,876 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:15,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:15,877 INFO L82 PathProgramCache]: Analyzing trace with hash -888861905, now seen corresponding path program 48 times [2020-10-14 18:33:15,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:15,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847678160] [2020-10-14 18:33:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:17,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:17,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 18:33:17,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:33:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1904 [2020-10-14 18:33:17,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:17,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 18:33:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 18:33:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:18,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:33:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:33:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:33:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:33:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:33:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:33:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:33:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:33:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:33:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 18:33:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 18:33:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 18:33:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 18:33:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:18,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:18,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:18,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:18,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:18,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:18,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:18,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 364 proven. 325 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-14 18:33:18,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847678160] [2020-10-14 18:33:18,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:18,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 18:33:18,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199859180] [2020-10-14 18:33:18,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 18:33:18,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:18,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 18:33:18,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:33:18,478 INFO L87 Difference]: Start difference. First operand 235 states and 254 transitions. Second operand 32 states. [2020-10-14 18:33:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:20,035 INFO L93 Difference]: Finished difference Result 366 states and 387 transitions. [2020-10-14 18:33:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 18:33:20,037 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 170 [2020-10-14 18:33:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:20,039 INFO L225 Difference]: With dead ends: 366 [2020-10-14 18:33:20,039 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 18:33:20,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=517, Invalid=1739, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 18:33:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 18:33:20,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 235. [2020-10-14 18:33:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-14 18:33:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 252 transitions. [2020-10-14 18:33:20,071 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 252 transitions. Word has length 170 [2020-10-14 18:33:20,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:20,071 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 252 transitions. [2020-10-14 18:33:20,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 18:33:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 252 transitions. [2020-10-14 18:33:20,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 18:33:20,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:20,073 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:20,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 18:33:20,073 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:20,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:20,074 INFO L82 PathProgramCache]: Analyzing trace with hash 310100974, now seen corresponding path program 49 times [2020-10-14 18:33:20,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:20,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279940443] [2020-10-14 18:33:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:20,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:20,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:25,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:25,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 18:33:25,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:33:25,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 18:33:25,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:25,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 18:33:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-14 18:33:25,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:26,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:26,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:26,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:33:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:26,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:33:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:26,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:33:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:26,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:33:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:26,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:33:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:26,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:33:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:26,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 18:33:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:26,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:33:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 18:33:26,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 18:33:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:26,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 18:33:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:26,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 18:33:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:26,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 18:33:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:26,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:26,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:26,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:26,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:26,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:26,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:26,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 24 proven. 723 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 18:33:26,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279940443] [2020-10-14 18:33:26,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:26,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 18:33:26,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442122069] [2020-10-14 18:33:26,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 18:33:26,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:26,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 18:33:26,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1250, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:33:26,754 INFO L87 Difference]: Start difference. First operand 235 states and 252 transitions. Second operand 37 states. [2020-10-14 18:33:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:32,075 INFO L93 Difference]: Finished difference Result 247 states and 264 transitions. [2020-10-14 18:33:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 18:33:32,077 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 170 [2020-10-14 18:33:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:32,078 INFO L225 Difference]: With dead ends: 247 [2020-10-14 18:33:32,078 INFO L226 Difference]: Without dead ends: 245 [2020-10-14 18:33:32,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=245, Invalid=4045, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 18:33:32,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-14 18:33:32,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 180. [2020-10-14 18:33:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-14 18:33:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2020-10-14 18:33:32,106 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 170 [2020-10-14 18:33:32,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:32,107 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2020-10-14 18:33:32,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 18:33:32,107 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2020-10-14 18:33:32,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 18:33:32,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:32,108 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:32,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 18:33:32,109 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:32,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:32,109 INFO L82 PathProgramCache]: Analyzing trace with hash -880566870, now seen corresponding path program 50 times [2020-10-14 18:33:32,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:32,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421916372] [2020-10-14 18:33:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:32,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:37,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:37,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 18:33:37,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:33:37,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-14 18:33:37,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:37,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 18:33:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 18:33:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:38,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:38,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:33:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:33:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:33:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:33:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:33:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:33:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 18:33:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 18:33:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:33:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 18:33:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 18:33:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-14 18:33:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 18:33:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:38,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:38,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:38,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:38,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:38,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 26 proven. 716 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-14 18:33:38,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421916372] [2020-10-14 18:33:38,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:38,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 18:33:38,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260391597] [2020-10-14 18:33:38,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 18:33:38,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:38,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 18:33:38,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:33:38,599 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand 35 states. [2020-10-14 18:33:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:44,451 INFO L93 Difference]: Finished difference Result 263 states and 283 transitions. [2020-10-14 18:33:44,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 18:33:44,453 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 174 [2020-10-14 18:33:44,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:44,455 INFO L225 Difference]: With dead ends: 263 [2020-10-14 18:33:44,455 INFO L226 Difference]: Without dead ends: 261 [2020-10-14 18:33:44,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=212, Invalid=4078, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 18:33:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-14 18:33:44,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 247. [2020-10-14 18:33:44,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-14 18:33:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 265 transitions. [2020-10-14 18:33:44,491 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 265 transitions. Word has length 174 [2020-10-14 18:33:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:44,491 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 265 transitions. [2020-10-14 18:33:44,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 18:33:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 265 transitions. [2020-10-14 18:33:44,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 18:33:44,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:44,492 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:44,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 18:33:44,493 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:44,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:44,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1831762597, now seen corresponding path program 51 times [2020-10-14 18:33:44,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:44,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977995663] [2020-10-14 18:33:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:44,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:44,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:49,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:49,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 18:33:49,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:33:49,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:33:49,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:49,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 18:33:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 18:33:49,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0