/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_partial_init_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:42:19,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:42:19,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:42:19,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:42:19,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:42:19,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:42:19,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:42:19,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:42:19,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:42:19,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:42:19,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:42:19,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:42:19,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:42:19,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:42:19,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:42:19,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:42:19,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:42:19,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:42:19,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:42:19,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:42:19,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:42:19,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:42:19,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:42:19,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:42:19,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:42:19,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:42:19,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:42:19,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:42:19,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:42:19,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:42:19,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:42:19,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:42:19,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:42:19,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:42:19,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:42:19,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:42:19,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:42:19,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:42:19,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:42:19,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:42:19,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:42:19,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:42:19,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:42:19,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:42:19,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:42:19,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:42:19,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:42:19,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:42:19,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:42:19,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:42:19,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:42:19,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:42:19,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:42:19,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:42:19,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:42:19,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:42:19,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:42:19,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:42:19,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:42:19,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:42:19,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:42:19,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:42:19,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:42:19,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:42:19,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:42:19,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:42:19,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:42:19,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:42:19,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:42:19,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:42:19,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:42:19,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:42:19,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:42:19,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:42:19,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:42:19,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:42:19,746 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:42:19,747 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partial_init_ground.i [2020-10-13 23:42:19,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1624c85c9/ec535b3a09de482ca237a2e5f7184045/FLAG5565cdfb6 [2020-10-13 23:42:20,286 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:42:20,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_partial_init_ground.i [2020-10-13 23:42:20,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1624c85c9/ec535b3a09de482ca237a2e5f7184045/FLAG5565cdfb6 [2020-10-13 23:42:20,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1624c85c9/ec535b3a09de482ca237a2e5f7184045 [2020-10-13 23:42:20,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:42:20,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:42:20,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:42:20,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:42:20,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:42:20,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:42:20" (1/1) ... [2020-10-13 23:42:20,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:20, skipping insertion in model container [2020-10-13 23:42:20,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:42:20" (1/1) ... [2020-10-13 23:42:20,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:42:20,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:42:20,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:42:20,997 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:42:21,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:42:21,060 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:42:21,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:21 WrapperNode [2020-10-13 23:42:21,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:42:21,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:42:21,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:42:21,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:42:21,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:21" (1/1) ... [2020-10-13 23:42:21,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:21" (1/1) ... [2020-10-13 23:42:21,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:21" (1/1) ... [2020-10-13 23:42:21,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:21" (1/1) ... [2020-10-13 23:42:21,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:21" (1/1) ... [2020-10-13 23:42:21,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:21" (1/1) ... [2020-10-13 23:42:21,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:21" (1/1) ... [2020-10-13 23:42:21,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:42:21,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:42:21,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:42:21,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:42:21,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:42:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:42:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:42:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:42:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:42:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:42:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:42:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:42:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:42:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:42:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:42:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:42:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:42:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:42:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:42:21,630 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:42:21,631 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 23:42:21,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:42:21 BoogieIcfgContainer [2020-10-13 23:42:21,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:42:21,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:42:21,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:42:21,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:42:21,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:42:20" (1/3) ... [2020-10-13 23:42:21,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c567905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:42:21, skipping insertion in model container [2020-10-13 23:42:21,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:42:21" (2/3) ... [2020-10-13 23:42:21,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c567905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:42:21, skipping insertion in model container [2020-10-13 23:42:21,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:42:21" (3/3) ... [2020-10-13 23:42:21,643 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_partial_init_ground.i [2020-10-13 23:42:21,653 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:42:21,660 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:42:21,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:42:21,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:42:21,693 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:42:21,693 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:42:21,693 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:42:21,693 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:42:21,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:42:21,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:42:21,694 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:42:21,711 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-13 23:42:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:42:21,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:21,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:21,719 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:21,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:21,725 INFO L82 PathProgramCache]: Analyzing trace with hash -267634740, now seen corresponding path program 1 times [2020-10-13 23:42:21,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:21,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638927175] [2020-10-13 23:42:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:21,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:21,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:22,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:22,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:42:22,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:42:22,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-13 23:42:22,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:22,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:42:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:22,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 23:42:22,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:22,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:22,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:22,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:22,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:42:22,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:22,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:22,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:42:22,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638927175] [2020-10-13 23:42:22,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:42:22,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:42:22,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994772489] [2020-10-13 23:42:22,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:42:22,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:22,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:42:22,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:42:22,254 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-13 23:42:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:22,362 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-13 23:42:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:42:22,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-13 23:42:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:22,374 INFO L225 Difference]: With dead ends: 58 [2020-10-13 23:42:22,374 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 23:42:22,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:42:22,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 23:42:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-13 23:42:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:42:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-13 23:42:22,420 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 15 [2020-10-13 23:42:22,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:22,420 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-13 23:42:22,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:42:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-13 23:42:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:42:22,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:22,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:22,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:42:22,424 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:22,424 INFO L82 PathProgramCache]: Analyzing trace with hash 814551547, now seen corresponding path program 1 times [2020-10-13 23:42:22,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:22,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207198452] [2020-10-13 23:42:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:22,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:22,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:22,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:42:22,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:42:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-13 23:42:22,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:22,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:42:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:42:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:42:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:42:22,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:22,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:22,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:22,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:22,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:42:22,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:22,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:42:22,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207198452] [2020-10-13 23:42:22,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:42:22,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:42:22,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950995211] [2020-10-13 23:42:22,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:42:22,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:22,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:42:22,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:42:22,847 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-13 23:42:22,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:22,984 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-10-13 23:42:22,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:42:22,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 23:42:22,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:22,987 INFO L225 Difference]: With dead ends: 53 [2020-10-13 23:42:22,987 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 23:42:22,989 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 [2020-10-13 23:42:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 23:42:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-13 23:42:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 23:42:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-13 23:42:23,006 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2020-10-13 23:42:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:23,006 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-13 23:42:23,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:42:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-13 23:42:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 23:42:23,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:23,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:23,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:42:23,012 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:23,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1658683186, now seen corresponding path program 1 times [2020-10-13 23:42:23,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:23,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429754484] [2020-10-13 23:42:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:23,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:23,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:42:23,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:42:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-13 23:42:23,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:23,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:23,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:42:23,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:42:23,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:42:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:23,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:23,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:23,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:23,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:23,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:23,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:42:23,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:23,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 23:42:23,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429754484] [2020-10-13 23:42:23,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:42:23,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:42:23,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053193179] [2020-10-13 23:42:23,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:42:23,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:23,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:42:23,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:42:23,576 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-13 23:42:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:23,659 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-13 23:42:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:42:23,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 23:42:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:23,661 INFO L225 Difference]: With dead ends: 52 [2020-10-13 23:42:23,661 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 23:42:23,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:42:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 23:42:23,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-13 23:42:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 23:42:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-13 23:42:23,669 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 20 [2020-10-13 23:42:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:23,670 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-13 23:42:23,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:42:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-13 23:42:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 23:42:23,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:23,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:23,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:42:23,672 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:23,673 INFO L82 PathProgramCache]: Analyzing trace with hash 978624816, now seen corresponding path program 1 times [2020-10-13 23:42:23,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:23,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364867912] [2020-10-13 23:42:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:23,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:24,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:24,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:42:24,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:42:24,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-13 23:42:24,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:24,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:42:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:42:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 23:42:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:24,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:24,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:24,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:24,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:42:24,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:24,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:42:24,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364867912] [2020-10-13 23:42:24,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:24,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:42:24,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067341942] [2020-10-13 23:42:24,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:42:24,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:24,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:42:24,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:42:24,471 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2020-10-13 23:42:24,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:24,593 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2020-10-13 23:42:24,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:42:24,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 23:42:24,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:24,614 INFO L225 Difference]: With dead ends: 68 [2020-10-13 23:42:24,615 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 23:42:24,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:42:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 23:42:24,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2020-10-13 23:42:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 23:42:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-13 23:42:24,623 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 20 [2020-10-13 23:42:24,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:24,624 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-13 23:42:24,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:42:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-13 23:42:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 23:42:24,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:24,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:24,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:42:24,626 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:24,627 INFO L82 PathProgramCache]: Analyzing trace with hash 685876501, now seen corresponding path program 1 times [2020-10-13 23:42:24,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:24,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888217514] [2020-10-13 23:42:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:24,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:24,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:26,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:26,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 23:42:26,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:42:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-10-13 23:42:26,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:26,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:42:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:42:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:42:26,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:26,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:26,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:26,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:26,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:26,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:42:26,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:26,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:26,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 23:42:26,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888217514] [2020-10-13 23:42:26,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:26,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:42:26,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368786412] [2020-10-13 23:42:26,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:42:26,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:26,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:42:26,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:42:26,592 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 6 states. [2020-10-13 23:42:26,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:26,704 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2020-10-13 23:42:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:42:26,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-13 23:42:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:26,706 INFO L225 Difference]: With dead ends: 80 [2020-10-13 23:42:26,706 INFO L226 Difference]: Without dead ends: 53 [2020-10-13 23:42:26,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:42:26,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-13 23:42:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2020-10-13 23:42:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 23:42:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-13 23:42:26,715 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 25 [2020-10-13 23:42:26,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:26,715 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-13 23:42:26,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:42:26,715 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-13 23:42:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 23:42:26,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:26,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:26,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:42:26,717 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:26,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:26,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2073376788, now seen corresponding path program 2 times [2020-10-13 23:42:26,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:26,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184088575] [2020-10-13 23:42:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:26,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:26,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:30,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:30,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:42:30,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:42:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3520 [2020-10-13 23:42:30,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:30,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:42:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:42:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:42:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:30,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:30,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:30,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:30,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:30,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:30,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:30,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:30,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 23:42:30,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184088575] [2020-10-13 23:42:30,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:30,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:42:30,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032226795] [2020-10-13 23:42:30,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:42:30,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:30,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:42:30,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:42:30,306 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 7 states. [2020-10-13 23:42:30,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:30,441 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2020-10-13 23:42:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:42:30,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-13 23:42:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:30,442 INFO L225 Difference]: With dead ends: 94 [2020-10-13 23:42:30,443 INFO L226 Difference]: Without dead ends: 61 [2020-10-13 23:42:30,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:42:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-13 23:42:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-10-13 23:42:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 23:42:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2020-10-13 23:42:30,451 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 30 [2020-10-13 23:42:30,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:30,452 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2020-10-13 23:42:30,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:42:30,452 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2020-10-13 23:42:30,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 23:42:30,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:30,453 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:30,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:42:30,454 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:30,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:30,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1184790065, now seen corresponding path program 3 times [2020-10-13 23:42:30,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:30,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692541371] [2020-10-13 23:42:30,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:31,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:33,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:35,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:35,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 23:42:35,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:42:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:42:35,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:35,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:42:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:42:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 23:42:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:35,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:35,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:35,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:35,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:35,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:42:35,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:35,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:35,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:42:35,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692541371] [2020-10-13 23:42:35,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:35,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:42:35,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616525702] [2020-10-13 23:42:35,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:42:35,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:35,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:42:35,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:42:35,710 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 10 states. [2020-10-13 23:42:36,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:36,164 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2020-10-13 23:42:36,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:42:36,165 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-13 23:42:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:36,167 INFO L225 Difference]: With dead ends: 90 [2020-10-13 23:42:36,167 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 23:42:36,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:42:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 23:42:36,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2020-10-13 23:42:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 23:42:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2020-10-13 23:42:36,190 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 35 [2020-10-13 23:42:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:36,191 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2020-10-13 23:42:36,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:42:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2020-10-13 23:42:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 23:42:36,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:36,195 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:36,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:42:36,195 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:36,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:36,196 INFO L82 PathProgramCache]: Analyzing trace with hash 926624627, now seen corresponding path program 4 times [2020-10-13 23:42:36,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:36,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268655955] [2020-10-13 23:42:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:36,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:36,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:37,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:38,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:41,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:41,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 23:42:41,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:42:41,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:42:41,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:41,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:42:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:42:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:42:41,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:41,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:41,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:41,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:41,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:41,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:42:41,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:41,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:41,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:41,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:41,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 23:42:41,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268655955] [2020-10-13 23:42:41,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:41,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:42:41,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565241642] [2020-10-13 23:42:41,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:42:41,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:41,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:42:41,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:42:41,301 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand 8 states. [2020-10-13 23:42:41,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:41,453 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2020-10-13 23:42:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:42:41,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-13 23:42:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:41,457 INFO L225 Difference]: With dead ends: 143 [2020-10-13 23:42:41,457 INFO L226 Difference]: Without dead ends: 89 [2020-10-13 23:42:41,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:42:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-13 23:42:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2020-10-13 23:42:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 23:42:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-10-13 23:42:41,474 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 35 [2020-10-13 23:42:41,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:41,474 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-10-13 23:42:41,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:42:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-10-13 23:42:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 23:42:41,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:41,476 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:41,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:42:41,477 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:41,477 INFO L82 PathProgramCache]: Analyzing trace with hash -919845830, now seen corresponding path program 5 times [2020-10-13 23:42:41,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:41,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135030558] [2020-10-13 23:42:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:46,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:46,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 23:42:46,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:42:46,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:42:46,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:46,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:42:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:42:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 23:42:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:46,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:46,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:46,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:46,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:46,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:46,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:46,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 23:42:46,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135030558] [2020-10-13 23:42:46,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:46,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:42:46,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091786182] [2020-10-13 23:42:46,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:42:46,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:46,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:42:46,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:42:46,599 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 9 states. [2020-10-13 23:42:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:46,765 INFO L93 Difference]: Finished difference Result 163 states and 207 transitions. [2020-10-13 23:42:46,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:42:46,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-13 23:42:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:46,767 INFO L225 Difference]: With dead ends: 163 [2020-10-13 23:42:46,767 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 23:42:46,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:42:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 23:42:46,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2020-10-13 23:42:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 23:42:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2020-10-13 23:42:46,784 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 40 [2020-10-13 23:42:46,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:46,785 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2020-10-13 23:42:46,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:42:46,785 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2020-10-13 23:42:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 23:42:46,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:46,790 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:46,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:42:46,790 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:46,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1690639503, now seen corresponding path program 6 times [2020-10-13 23:42:46,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:46,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247176351] [2020-10-13 23:42:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:46,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:48,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:51,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:51,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 23:42:51,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:42:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:42:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:51,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:42:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:42:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 23:42:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:52,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:52,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:52,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:52,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:52,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:52,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:52,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:52,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-13 23:42:52,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247176351] [2020-10-13 23:42:52,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:52,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:42:52,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478269088] [2020-10-13 23:42:52,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:42:52,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:52,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:42:52,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:42:52,081 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand 12 states. [2020-10-13 23:42:52,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:52,396 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2020-10-13 23:42:52,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:42:52,397 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-13 23:42:52,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:52,398 INFO L225 Difference]: With dead ends: 115 [2020-10-13 23:42:52,399 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 23:42:52,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:42:52,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 23:42:52,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 76. [2020-10-13 23:42:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 23:42:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2020-10-13 23:42:52,408 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 45 [2020-10-13 23:42:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:52,409 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2020-10-13 23:42:52,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:42:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2020-10-13 23:42:52,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 23:42:52,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:52,410 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:52,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:42:52,411 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:52,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:52,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1762184657, now seen corresponding path program 1 times [2020-10-13 23:42:52,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:52,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835357970] [2020-10-13 23:42:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:56,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:57,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:57,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 23:42:57,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:42:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:42:57,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:57,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:42:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:42:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 23:42:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:57,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:57,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:57,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:57,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:57,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:57,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 23:42:57,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835357970] [2020-10-13 23:42:57,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:57,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:42:57,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295809237] [2020-10-13 23:42:57,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:42:57,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:57,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:42:57,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:42:57,481 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand 6 states. [2020-10-13 23:42:57,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:57,584 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2020-10-13 23:42:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:42:57,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-13 23:42:57,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:57,585 INFO L225 Difference]: With dead ends: 88 [2020-10-13 23:42:57,585 INFO L226 Difference]: Without dead ends: 77 [2020-10-13 23:42:57,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:42:57,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-13 23:42:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-13 23:42:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 23:42:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2020-10-13 23:42:57,593 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 47 [2020-10-13 23:42:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:57,594 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2020-10-13 23:42:57,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:42:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2020-10-13 23:42:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:42:57,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:57,595 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:57,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:42:57,595 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:57,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:57,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1866342412, now seen corresponding path program 1 times [2020-10-13 23:42:57,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:57,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41259781] [2020-10-13 23:42:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:57,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:57,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:02,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:02,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 23:43:02,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:43:02,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:43:02,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:02,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:43:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:43:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 23:43:02,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:02,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:02,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:02,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:02,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:02,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:02,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:02,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:02,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:02,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:43:02,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:43:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:02,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:02,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:02,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:02,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:02,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:02,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:02,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:43:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:43:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 23:43:02,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41259781] [2020-10-13 23:43:02,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:02,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:43:02,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510020298] [2020-10-13 23:43:02,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:43:02,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:02,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:43:02,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:43:02,672 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand 7 states. [2020-10-13 23:43:02,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:02,825 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2020-10-13 23:43:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:43:02,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-13 23:43:02,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:02,827 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:43:02,827 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 23:43:02,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:43:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 23:43:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-13 23:43:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 23:43:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2020-10-13 23:43:02,837 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 53 [2020-10-13 23:43:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:02,837 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2020-10-13 23:43:02,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:43:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2020-10-13 23:43:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:43:02,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:02,838 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:02,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:43:02,839 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:02,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:02,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1048693962, now seen corresponding path program 2 times [2020-10-13 23:43:02,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:02,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002957083] [2020-10-13 23:43:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:03,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:03,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:07,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:07,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 23:43:07,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:43:07,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:43:07,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:07,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:43:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:43:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 23:43:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:08,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:08,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:08,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:08,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:08,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:08,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:08,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:43:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:08,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:08,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:08,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:43:08,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:08,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:43:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:43:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:43:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-13 23:43:08,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002957083] [2020-10-13 23:43:08,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:08,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:43:08,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563266922] [2020-10-13 23:43:08,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:43:08,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:08,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:43:08,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:43:08,035 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand 12 states. [2020-10-13 23:43:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:08,552 INFO L93 Difference]: Finished difference Result 147 states and 179 transitions. [2020-10-13 23:43:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:43:08,553 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-13 23:43:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:08,554 INFO L225 Difference]: With dead ends: 147 [2020-10-13 23:43:08,554 INFO L226 Difference]: Without dead ends: 145 [2020-10-13 23:43:08,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:43:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-13 23:43:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 121. [2020-10-13 23:43:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 23:43:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 148 transitions. [2020-10-13 23:43:08,577 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 148 transitions. Word has length 53 [2020-10-13 23:43:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:08,578 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 148 transitions. [2020-10-13 23:43:08,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:43:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 148 transitions. [2020-10-13 23:43:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:43:08,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:08,581 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:08,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:43:08,581 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:08,582 INFO L82 PathProgramCache]: Analyzing trace with hash 756744372, now seen corresponding path program 3 times [2020-10-13 23:43:08,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:08,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341418390] [2020-10-13 23:43:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:08,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:09,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:10,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:10,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:13,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:13,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 23:43:13,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:43:13,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:43:13,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:13,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:13,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:43:13,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:43:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:43:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:13,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:13,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:13,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:13,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:13,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:13,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:13,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:13,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:13,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:43:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:13,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:13,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:13,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:13,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:43:13,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:13,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:43:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-13 23:43:13,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341418390] [2020-10-13 23:43:13,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:13,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:43:13,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730891435] [2020-10-13 23:43:13,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:43:13,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:13,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:43:13,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:43:13,667 INFO L87 Difference]: Start difference. First operand 121 states and 148 transitions. Second operand 10 states. [2020-10-13 23:43:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:13,839 INFO L93 Difference]: Finished difference Result 248 states and 313 transitions. [2020-10-13 23:43:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:43:13,839 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-13 23:43:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:13,841 INFO L225 Difference]: With dead ends: 248 [2020-10-13 23:43:13,841 INFO L226 Difference]: Without dead ends: 146 [2020-10-13 23:43:13,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:43:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-13 23:43:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2020-10-13 23:43:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-13 23:43:13,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 166 transitions. [2020-10-13 23:43:13,855 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 166 transitions. Word has length 53 [2020-10-13 23:43:13,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:13,855 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 166 transitions. [2020-10-13 23:43:13,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:43:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 166 transitions. [2020-10-13 23:43:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 23:43:13,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:13,856 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:13,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:43:13,857 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:13,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1063551043, now seen corresponding path program 4 times [2020-10-13 23:43:13,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:13,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278476600] [2020-10-13 23:43:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:13,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:13,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:15,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:15,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:18,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:18,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 23:43:18,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:43:18,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:43:18,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:18,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:43:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:43:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 23:43:18,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:19,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:19,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:19,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:19,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:19,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:19,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:19,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:19,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:19,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:43:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:19,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:19,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:19,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:19,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:43:19,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:19,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:43:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:43:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 23:43:19,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278476600] [2020-10-13 23:43:19,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:19,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:43:19,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682367595] [2020-10-13 23:43:19,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:43:19,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:19,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:43:19,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:43:19,064 INFO L87 Difference]: Start difference. First operand 135 states and 166 transitions. Second operand 14 states. [2020-10-13 23:43:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:19,616 INFO L93 Difference]: Finished difference Result 165 states and 199 transitions. [2020-10-13 23:43:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:43:19,616 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-13 23:43:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:19,619 INFO L225 Difference]: With dead ends: 165 [2020-10-13 23:43:19,619 INFO L226 Difference]: Without dead ends: 163 [2020-10-13 23:43:19,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:43:19,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-13 23:43:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2020-10-13 23:43:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-13 23:43:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 143 transitions. [2020-10-13 23:43:19,631 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 143 transitions. Word has length 58 [2020-10-13 23:43:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:19,632 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 143 transitions. [2020-10-13 23:43:19,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:43:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 143 transitions. [2020-10-13 23:43:19,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:43:19,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:19,633 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:19,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:43:19,633 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:19,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:19,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1796116615, now seen corresponding path program 1 times [2020-10-13 23:43:19,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:19,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593442890] [2020-10-13 23:43:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:21,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:24,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:24,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:43:24,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:43:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:43:24,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:24,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:43:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:43:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:43:24,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:24,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:24,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:24,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:24,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:24,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:24,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:43:24,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:43:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:24,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:24,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:24,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:24,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:43:24,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:24,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:43:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:24,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:43:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:43:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 23:43:24,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593442890] [2020-10-13 23:43:24,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:24,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:43:24,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482409350] [2020-10-13 23:43:24,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:43:24,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:24,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:43:24,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:43:24,810 INFO L87 Difference]: Start difference. First operand 118 states and 143 transitions. Second operand 11 states. [2020-10-13 23:43:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:25,216 INFO L93 Difference]: Finished difference Result 155 states and 186 transitions. [2020-10-13 23:43:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:43:25,217 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-13 23:43:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:25,220 INFO L225 Difference]: With dead ends: 155 [2020-10-13 23:43:25,221 INFO L226 Difference]: Without dead ends: 140 [2020-10-13 23:43:25,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:43:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-13 23:43:25,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 115. [2020-10-13 23:43:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 23:43:25,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 139 transitions. [2020-10-13 23:43:25,245 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 139 transitions. Word has length 60 [2020-10-13 23:43:25,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:25,245 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 139 transitions. [2020-10-13 23:43:25,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:43:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 139 transitions. [2020-10-13 23:43:25,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:43:25,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:25,247 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:25,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:43:25,248 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:25,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:25,248 INFO L82 PathProgramCache]: Analyzing trace with hash -111681845, now seen corresponding path program 2 times [2020-10-13 23:43:25,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:25,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210481819] [2020-10-13 23:43:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:25,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:30,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:30,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:43:30,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:43:30,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:43:30,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:30,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:30,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:43:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:43:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:43:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:30,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:30,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:30,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:30,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:30,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:30,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:30,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:30,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:43:30,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:43:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:30,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:30,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:30,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:43:30,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:30,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:43:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:43:30,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:43:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 23:43:30,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210481819] [2020-10-13 23:43:30,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:30,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:43:30,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209487537] [2020-10-13 23:43:30,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:43:30,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:30,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:43:30,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:43:30,459 INFO L87 Difference]: Start difference. First operand 115 states and 139 transitions. Second operand 12 states. [2020-10-13 23:43:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:30,912 INFO L93 Difference]: Finished difference Result 163 states and 197 transitions. [2020-10-13 23:43:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:43:30,913 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-13 23:43:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:30,915 INFO L225 Difference]: With dead ends: 163 [2020-10-13 23:43:30,915 INFO L226 Difference]: Without dead ends: 148 [2020-10-13 23:43:30,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:43:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-13 23:43:30,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 118. [2020-10-13 23:43:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-13 23:43:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 143 transitions. [2020-10-13 23:43:30,939 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 143 transitions. Word has length 60 [2020-10-13 23:43:30,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:30,940 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 143 transitions. [2020-10-13 23:43:30,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:43:30,940 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 143 transitions. [2020-10-13 23:43:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:43:30,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:30,943 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:30,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:43:30,944 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:30,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1577261897, now seen corresponding path program 3 times [2020-10-13 23:43:30,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:30,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946500133] [2020-10-13 23:43:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:30,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:35,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:35,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:43:35,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:43:35,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:43:35,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:35,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:43:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:43:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 23:43:35,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:36,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:36,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:36,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:36,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:43:36,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:36,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:43:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:36,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:36,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:36,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:36,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:36,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:36,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:36,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:36,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:43:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:43:36,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-13 23:43:36,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946500133] [2020-10-13 23:43:36,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:36,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:43:36,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118856987] [2020-10-13 23:43:36,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:43:36,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:36,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:43:36,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:43:36,048 INFO L87 Difference]: Start difference. First operand 118 states and 143 transitions. Second operand 8 states. [2020-10-13 23:43:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:36,264 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2020-10-13 23:43:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:43:36,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-10-13 23:43:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:36,266 INFO L225 Difference]: With dead ends: 134 [2020-10-13 23:43:36,266 INFO L226 Difference]: Without dead ends: 123 [2020-10-13 23:43:36,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:43:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-13 23:43:36,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2020-10-13 23:43:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-13 23:43:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2020-10-13 23:43:36,285 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 60 [2020-10-13 23:43:36,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:36,286 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2020-10-13 23:43:36,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:43:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2020-10-13 23:43:36,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:43:36,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:36,287 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:36,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:43:36,288 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash -33375737, now seen corresponding path program 4 times [2020-10-13 23:43:36,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:36,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883308178] [2020-10-13 23:43:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:36,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:36,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:37,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:41,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:41,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:43:41,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:43:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:43:41,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:41,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:43:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:43:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:43:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:41,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:41,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:41,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:41,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:41,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:41,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:41,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:41,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:43:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:41,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:41,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:41,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:41,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:43:41,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:41,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:43:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:43:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 23:43:41,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883308178] [2020-10-13 23:43:41,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:41,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:43:41,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896540748] [2020-10-13 23:43:41,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:43:41,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:41,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:43:41,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:43:41,436 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand 13 states. [2020-10-13 23:43:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:41,897 INFO L93 Difference]: Finished difference Result 239 states and 296 transitions. [2020-10-13 23:43:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:43:41,898 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-13 23:43:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:41,900 INFO L225 Difference]: With dead ends: 239 [2020-10-13 23:43:41,900 INFO L226 Difference]: Without dead ends: 228 [2020-10-13 23:43:41,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:43:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-13 23:43:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 149. [2020-10-13 23:43:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 23:43:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 182 transitions. [2020-10-13 23:43:41,921 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 182 transitions. Word has length 60 [2020-10-13 23:43:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:41,921 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 182 transitions. [2020-10-13 23:43:41,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:43:41,921 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 182 transitions. [2020-10-13 23:43:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:43:41,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:41,922 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:41,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:43:41,923 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:41,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:41,923 INFO L82 PathProgramCache]: Analyzing trace with hash 616645963, now seen corresponding path program 5 times [2020-10-13 23:43:41,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:41,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446170702] [2020-10-13 23:43:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:41,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:41,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:44,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:46,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:43:46,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:43:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:43:46,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:46,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:43:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:43:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:43:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:47,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:47,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:47,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:47,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:47,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:47,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:47,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:47,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:47,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:47,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:47,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:47,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:43:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:47,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:47,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:47,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:47,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:47,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:47,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:43:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:43:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-13 23:43:47,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446170702] [2020-10-13 23:43:47,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:47,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:43:47,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672990491] [2020-10-13 23:43:47,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:43:47,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:47,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:43:47,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:43:47,089 INFO L87 Difference]: Start difference. First operand 149 states and 182 transitions. Second operand 14 states. [2020-10-13 23:43:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:47,651 INFO L93 Difference]: Finished difference Result 275 states and 342 transitions. [2020-10-13 23:43:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:43:47,652 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-13 23:43:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:47,654 INFO L225 Difference]: With dead ends: 275 [2020-10-13 23:43:47,655 INFO L226 Difference]: Without dead ends: 264 [2020-10-13 23:43:47,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:43:47,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-13 23:43:47,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 166. [2020-10-13 23:43:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-13 23:43:47,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 205 transitions. [2020-10-13 23:43:47,672 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 205 transitions. Word has length 60 [2020-10-13 23:43:47,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:47,672 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 205 transitions. [2020-10-13 23:43:47,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:43:47,673 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 205 transitions. [2020-10-13 23:43:47,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:43:47,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:47,674 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:47,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:43:47,674 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:47,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:47,674 INFO L82 PathProgramCache]: Analyzing trace with hash -594427001, now seen corresponding path program 6 times [2020-10-13 23:43:47,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:47,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091130841] [2020-10-13 23:43:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:48,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:50,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:52,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:52,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:43:52,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:43:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:43:52,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:52,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:43:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:43:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:43:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:52,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:52,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:52,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:52,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:52,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:52,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:52,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:52,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:43:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:52,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:52,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:52,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:52,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:52,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:52,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:43:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:43:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 9 proven. 37 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 23:43:52,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091130841] [2020-10-13 23:43:52,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:52,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:43:52,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690330794] [2020-10-13 23:43:52,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:43:52,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:52,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:43:52,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:43:52,814 INFO L87 Difference]: Start difference. First operand 166 states and 205 transitions. Second operand 12 states. [2020-10-13 23:43:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:53,130 INFO L93 Difference]: Finished difference Result 195 states and 239 transitions. [2020-10-13 23:43:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:43:53,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-13 23:43:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:53,133 INFO L225 Difference]: With dead ends: 195 [2020-10-13 23:43:53,134 INFO L226 Difference]: Without dead ends: 180 [2020-10-13 23:43:53,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:43:53,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-13 23:43:53,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2020-10-13 23:43:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 23:43:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 221 transitions. [2020-10-13 23:43:53,167 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 221 transitions. Word has length 60 [2020-10-13 23:43:53,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:53,168 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 221 transitions. [2020-10-13 23:43:53,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:43:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 221 transitions. [2020-10-13 23:43:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:43:53,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:53,169 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:53,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:43:53,169 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:53,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:53,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1943811125, now seen corresponding path program 7 times [2020-10-13 23:43:53,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:53,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441259965] [2020-10-13 23:43:53,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:53,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:54,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:58,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:58,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:43:58,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:43:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:43:58,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:58,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:43:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:43:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:43:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:43:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:58,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:58,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:43:58,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:58,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:58,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:58,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:43:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:43:58,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:58,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:43:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:58,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:43:58,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:43:58,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:43:58,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:43:58,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:43:58,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:43:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:43:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:43:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:43:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:43:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 23:43:58,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441259965] [2020-10-13 23:43:58,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:43:58,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:43:58,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677671570] [2020-10-13 23:43:58,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:43:58,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:43:58,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:43:58,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:43:58,299 INFO L87 Difference]: Start difference. First operand 178 states and 221 transitions. Second operand 11 states. [2020-10-13 23:43:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:43:58,576 INFO L93 Difference]: Finished difference Result 210 states and 259 transitions. [2020-10-13 23:43:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:43:58,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-13 23:43:58,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:43:58,581 INFO L225 Difference]: With dead ends: 210 [2020-10-13 23:43:58,581 INFO L226 Difference]: Without dead ends: 195 [2020-10-13 23:43:58,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:43:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-13 23:43:58,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 181. [2020-10-13 23:43:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 23:43:58,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 225 transitions. [2020-10-13 23:43:58,618 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 225 transitions. Word has length 60 [2020-10-13 23:43:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:43:58,619 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 225 transitions. [2020-10-13 23:43:58,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:43:58,619 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 225 transitions. [2020-10-13 23:43:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:43:58,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:43:58,630 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:43:58,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:43:58,630 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:43:58,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:43:58,631 INFO L82 PathProgramCache]: Analyzing trace with hash -552358649, now seen corresponding path program 8 times [2020-10-13 23:43:58,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:43:58,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124704252] [2020-10-13 23:43:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:43:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:43:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:59,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:43:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:03,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:03,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:44:03,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:44:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:44:03,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:03,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:44:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:44:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:44:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:03,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:03,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:03,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:03,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:03,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:03,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:03,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:03,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:03,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:44:03,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:44:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:03,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:03,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:44:03,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:03,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 23:44:03,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124704252] [2020-10-13 23:44:03,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:03,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:44:03,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858098358] [2020-10-13 23:44:03,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:44:03,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:03,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:44:03,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:44:03,813 INFO L87 Difference]: Start difference. First operand 181 states and 225 transitions. Second operand 10 states. [2020-10-13 23:44:04,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:04,071 INFO L93 Difference]: Finished difference Result 187 states and 230 transitions. [2020-10-13 23:44:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:44:04,071 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2020-10-13 23:44:04,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:04,073 INFO L225 Difference]: With dead ends: 187 [2020-10-13 23:44:04,073 INFO L226 Difference]: Without dead ends: 172 [2020-10-13 23:44:04,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:44:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-13 23:44:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 155. [2020-10-13 23:44:04,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-13 23:44:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 192 transitions. [2020-10-13 23:44:04,087 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 192 transitions. Word has length 60 [2020-10-13 23:44:04,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:04,088 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 192 transitions. [2020-10-13 23:44:04,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:44:04,088 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 192 transitions. [2020-10-13 23:44:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:44:04,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:04,089 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:04,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:44:04,090 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:04,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:04,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1845113708, now seen corresponding path program 5 times [2020-10-13 23:44:04,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:04,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044410321] [2020-10-13 23:44:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:04,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:05,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:09,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:09,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:44:09,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:44:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:44:09,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:09,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:44:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:44:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 23:44:09,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:09,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:09,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:09,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:09,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:09,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:09,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:44:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:09,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:09,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:09,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:09,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:09,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:44:09,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:09,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:09,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:09,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:44:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:09,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:09,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:09,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:09,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:09,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:09,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:09,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:09,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:09,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:09,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 23:44:09,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044410321] [2020-10-13 23:44:09,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:09,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:44:09,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057502178] [2020-10-13 23:44:09,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:44:09,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:09,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:44:09,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:44:09,182 INFO L87 Difference]: Start difference. First operand 155 states and 192 transitions. Second operand 9 states. [2020-10-13 23:44:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:09,357 INFO L93 Difference]: Finished difference Result 235 states and 293 transitions. [2020-10-13 23:44:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:44:09,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-10-13 23:44:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:09,359 INFO L225 Difference]: With dead ends: 235 [2020-10-13 23:44:09,359 INFO L226 Difference]: Without dead ends: 206 [2020-10-13 23:44:09,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:44:09,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-13 23:44:09,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-10-13 23:44:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-13 23:44:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 257 transitions. [2020-10-13 23:44:09,377 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 257 transitions. Word has length 66 [2020-10-13 23:44:09,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:09,377 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 257 transitions. [2020-10-13 23:44:09,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:44:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 257 transitions. [2020-10-13 23:44:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:44:09,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:09,379 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:09,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:44:09,379 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:09,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1143513834, now seen corresponding path program 6 times [2020-10-13 23:44:09,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:09,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330818674] [2020-10-13 23:44:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:10,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:10,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:14,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:14,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:44:14,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:44:14,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 23:44:14,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:14,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:44:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:44:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 23:44:14,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:14,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:14,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:14,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:14,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:14,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:14,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:14,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:14,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:14,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:44:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:14,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:14,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:14,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:14,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:14,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:44:14,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:14,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:14,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:14,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:44:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:14,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:14,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:14,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:14,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:14,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:14,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:14,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:14,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-13 23:44:14,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330818674] [2020-10-13 23:44:14,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:14,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:44:14,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024988484] [2020-10-13 23:44:14,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:44:14,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:14,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:44:14,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:44:14,606 INFO L87 Difference]: Start difference. First operand 206 states and 257 transitions. Second operand 14 states. [2020-10-13 23:44:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:15,271 INFO L93 Difference]: Finished difference Result 286 states and 358 transitions. [2020-10-13 23:44:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:44:15,272 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-13 23:44:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:15,276 INFO L225 Difference]: With dead ends: 286 [2020-10-13 23:44:15,276 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 23:44:15,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:44:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 23:44:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 245. [2020-10-13 23:44:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-13 23:44:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 308 transitions. [2020-10-13 23:44:15,307 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 308 transitions. Word has length 66 [2020-10-13 23:44:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:15,308 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 308 transitions. [2020-10-13 23:44:15,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:44:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 308 transitions. [2020-10-13 23:44:15,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:44:15,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:15,310 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:15,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:44:15,311 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:15,311 INFO L82 PathProgramCache]: Analyzing trace with hash -907470164, now seen corresponding path program 7 times [2020-10-13 23:44:15,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:15,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316612117] [2020-10-13 23:44:15,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:20,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:20,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:44:20,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:44:20,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:44:20,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:20,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:44:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:44:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 23:44:20,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:20,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:20,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:20,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:20,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:20,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:20,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:44:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:20,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:20,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:20,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:44:20,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:20,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:44:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:20,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:44:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:20,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:20,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:20,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:20,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:44:20,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:20,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:20,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:20,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:44:20,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:20,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-13 23:44:20,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316612117] [2020-10-13 23:44:20,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:20,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:44:20,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433106225] [2020-10-13 23:44:20,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:44:20,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:20,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:44:20,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:44:20,415 INFO L87 Difference]: Start difference. First operand 245 states and 308 transitions. Second operand 11 states. [2020-10-13 23:44:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:20,605 INFO L93 Difference]: Finished difference Result 549 states and 707 transitions. [2020-10-13 23:44:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:44:20,605 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-10-13 23:44:20,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:20,608 INFO L225 Difference]: With dead ends: 549 [2020-10-13 23:44:20,608 INFO L226 Difference]: Without dead ends: 325 [2020-10-13 23:44:20,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:44:20,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-13 23:44:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 262. [2020-10-13 23:44:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-13 23:44:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 330 transitions. [2020-10-13 23:44:20,639 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 330 transitions. Word has length 66 [2020-10-13 23:44:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:20,639 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 330 transitions. [2020-10-13 23:44:20,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:44:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 330 transitions. [2020-10-13 23:44:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 23:44:20,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:20,643 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:20,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:44:20,643 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:20,644 INFO L82 PathProgramCache]: Analyzing trace with hash -219434183, now seen corresponding path program 8 times [2020-10-13 23:44:20,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:20,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111133199] [2020-10-13 23:44:20,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:20,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:23,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:25,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:25,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 23:44:25,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:44:25,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:44:25,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:25,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:44:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:44:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 23:44:25,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:25,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:25,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:25,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:25,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:25,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:25,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:25,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:25,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:44:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:25,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:25,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:25,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:25,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:25,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:25,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:25,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:44:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:25,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:25,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:25,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:25,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:25,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:25,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:25,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 23:44:25,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111133199] [2020-10-13 23:44:25,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:25,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:44:25,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825728930] [2020-10-13 23:44:25,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:44:25,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:25,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:44:25,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:44:25,872 INFO L87 Difference]: Start difference. First operand 262 states and 330 transitions. Second operand 16 states. [2020-10-13 23:44:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:26,618 INFO L93 Difference]: Finished difference Result 304 states and 378 transitions. [2020-10-13 23:44:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:44:26,619 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-10-13 23:44:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:26,622 INFO L225 Difference]: With dead ends: 304 [2020-10-13 23:44:26,622 INFO L226 Difference]: Without dead ends: 302 [2020-10-13 23:44:26,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:44:26,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-13 23:44:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 232. [2020-10-13 23:44:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-13 23:44:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 290 transitions. [2020-10-13 23:44:26,642 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 290 transitions. Word has length 71 [2020-10-13 23:44:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:26,642 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 290 transitions. [2020-10-13 23:44:26,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:44:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 290 transitions. [2020-10-13 23:44:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 23:44:26,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:26,644 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:26,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:44:26,644 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:26,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1750196167, now seen corresponding path program 9 times [2020-10-13 23:44:26,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:26,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009580297] [2020-10-13 23:44:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:26,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:29,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:30,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:30,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:31,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:31,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 23:44:31,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:44:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:44:31,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:31,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:44:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:44:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 23:44:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:31,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:31,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:31,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:31,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:31,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:31,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:31,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:31,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:44:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:31,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:31,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:31,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:44:31,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:31,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:44:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:31,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:31,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:31,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:44:31,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:31,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 19 proven. 59 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 23:44:31,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009580297] [2020-10-13 23:44:31,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:31,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:44:31,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383760743] [2020-10-13 23:44:31,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:44:31,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:31,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:44:31,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:44:31,903 INFO L87 Difference]: Start difference. First operand 232 states and 290 transitions. Second operand 14 states. [2020-10-13 23:44:32,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:32,308 INFO L93 Difference]: Finished difference Result 282 states and 349 transitions. [2020-10-13 23:44:32,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:44:32,308 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-10-13 23:44:32,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:32,311 INFO L225 Difference]: With dead ends: 282 [2020-10-13 23:44:32,311 INFO L226 Difference]: Without dead ends: 280 [2020-10-13 23:44:32,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:44:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-13 23:44:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 254. [2020-10-13 23:44:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-13 23:44:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 317 transitions. [2020-10-13 23:44:32,336 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 317 transitions. Word has length 73 [2020-10-13 23:44:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:32,337 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 317 transitions. [2020-10-13 23:44:32,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:44:32,337 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 317 transitions. [2020-10-13 23:44:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 23:44:32,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:32,338 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:32,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:44:32,339 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:32,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:32,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1772828421, now seen corresponding path program 10 times [2020-10-13 23:44:32,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:32,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507786515] [2020-10-13 23:44:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:32,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:37,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:37,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 23:44:37,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:44:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:44:37,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:37,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:44:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:44:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 23:44:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:37,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:37,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:37,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:37,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:37,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:37,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:37,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:37,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:37,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:37,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:37,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:37,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:44:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:37,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:37,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:37,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:37,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:37,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:37,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:44:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:37,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:37,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:37,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:37,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:37,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:37,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 21 proven. 57 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 23:44:37,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507786515] [2020-10-13 23:44:37,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:37,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:44:37,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350358720] [2020-10-13 23:44:37,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:44:37,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:37,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:44:37,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:44:37,437 INFO L87 Difference]: Start difference. First operand 254 states and 317 transitions. Second operand 10 states. [2020-10-13 23:44:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:37,696 INFO L93 Difference]: Finished difference Result 281 states and 346 transitions. [2020-10-13 23:44:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:44:37,697 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-13 23:44:37,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:37,699 INFO L225 Difference]: With dead ends: 281 [2020-10-13 23:44:37,699 INFO L226 Difference]: Without dead ends: 263 [2020-10-13 23:44:37,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:44:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-13 23:44:37,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 254. [2020-10-13 23:44:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-13 23:44:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 315 transitions. [2020-10-13 23:44:37,721 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 315 transitions. Word has length 73 [2020-10-13 23:44:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:37,722 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 315 transitions. [2020-10-13 23:44:37,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:44:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 315 transitions. [2020-10-13 23:44:37,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 23:44:37,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:37,723 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:37,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:44:37,724 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:37,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:37,724 INFO L82 PathProgramCache]: Analyzing trace with hash 451257469, now seen corresponding path program 11 times [2020-10-13 23:44:37,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:37,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937830436] [2020-10-13 23:44:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:40,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:41,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:41,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:42,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:42,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 23:44:42,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:44:42,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:44:42,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:42,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:42,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:44:42,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:44:42,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 23:44:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:42,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:42,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:42,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:42,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:42,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:42,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:42,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:42,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:44:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:42,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:42,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:42,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:42,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:42,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:42,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:44:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:42,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:42,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:42,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:42,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:42,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:42,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-13 23:44:42,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937830436] [2020-10-13 23:44:42,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:42,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:44:42,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536764552] [2020-10-13 23:44:42,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:44:42,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:42,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:44:42,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:44:42,885 INFO L87 Difference]: Start difference. First operand 254 states and 315 transitions. Second operand 13 states. [2020-10-13 23:44:43,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:43,225 INFO L93 Difference]: Finished difference Result 306 states and 379 transitions. [2020-10-13 23:44:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:44:43,225 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-10-13 23:44:43,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:43,228 INFO L225 Difference]: With dead ends: 306 [2020-10-13 23:44:43,228 INFO L226 Difference]: Without dead ends: 304 [2020-10-13 23:44:43,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:44:43,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-13 23:44:43,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 260. [2020-10-13 23:44:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-13 23:44:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 323 transitions. [2020-10-13 23:44:43,251 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 323 transitions. Word has length 73 [2020-10-13 23:44:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:43,251 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 323 transitions. [2020-10-13 23:44:43,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:44:43,251 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 323 transitions. [2020-10-13 23:44:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 23:44:43,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:43,253 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:43,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:44:43,253 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:43,253 INFO L82 PathProgramCache]: Analyzing trace with hash -194082375, now seen corresponding path program 12 times [2020-10-13 23:44:43,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:43,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800389723] [2020-10-13 23:44:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:43,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:46,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:46,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:48,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:48,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 23:44:48,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:44:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:44:48,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:48,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:44:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:44:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 23:44:48,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:48,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:48,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:48,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:48,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:48,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:48,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:48,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:48,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:48,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:44:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:48,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:48,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:48,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:48,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:48,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:48,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:48,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:44:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:48,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:48,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:48,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:48,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-13 23:44:48,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800389723] [2020-10-13 23:44:48,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:48,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:44:48,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556610220] [2020-10-13 23:44:48,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:44:48,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:48,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:44:48,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:44:48,420 INFO L87 Difference]: Start difference. First operand 260 states and 323 transitions. Second operand 12 states. [2020-10-13 23:44:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:48,755 INFO L93 Difference]: Finished difference Result 318 states and 395 transitions. [2020-10-13 23:44:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:44:48,755 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-10-13 23:44:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:48,757 INFO L225 Difference]: With dead ends: 318 [2020-10-13 23:44:48,758 INFO L226 Difference]: Without dead ends: 316 [2020-10-13 23:44:48,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:44:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-13 23:44:48,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 266. [2020-10-13 23:44:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-13 23:44:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 331 transitions. [2020-10-13 23:44:48,798 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 331 transitions. Word has length 73 [2020-10-13 23:44:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:48,798 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 331 transitions. [2020-10-13 23:44:48,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:44:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 331 transitions. [2020-10-13 23:44:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 23:44:48,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:48,800 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:48,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:44:48,801 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:48,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:48,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1239758083, now seen corresponding path program 13 times [2020-10-13 23:44:48,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:48,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028790396] [2020-10-13 23:44:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:48,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:51,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:51,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:53,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:53,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 23:44:53,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:44:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 23:44:53,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:53,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:44:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:44:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 23:44:53,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:53,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:53,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:53,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:53,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:53,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:53,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:53,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:44:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:53,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:53,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:53,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:53,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:53,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:53,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:53,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:53,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:53,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:44:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:53,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:53,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:53,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:53,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:53,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:53,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:53,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-13 23:44:54,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028790396] [2020-10-13 23:44:54,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:54,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:44:54,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922402828] [2020-10-13 23:44:54,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:44:54,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:54,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:44:54,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:44:54,007 INFO L87 Difference]: Start difference. First operand 266 states and 331 transitions. Second operand 11 states. [2020-10-13 23:44:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:54,296 INFO L93 Difference]: Finished difference Result 276 states and 340 transitions. [2020-10-13 23:44:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:44:54,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-10-13 23:44:54,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:54,299 INFO L225 Difference]: With dead ends: 276 [2020-10-13 23:44:54,299 INFO L226 Difference]: Without dead ends: 274 [2020-10-13 23:44:54,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:44:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-13 23:44:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 218. [2020-10-13 23:44:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-13 23:44:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 268 transitions. [2020-10-13 23:44:54,320 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 268 transitions. Word has length 73 [2020-10-13 23:44:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:54,320 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 268 transitions. [2020-10-13 23:44:54,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:44:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 268 transitions. [2020-10-13 23:44:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 23:44:54,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:54,322 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:54,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:44:54,322 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:54,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:54,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1726671390, now seen corresponding path program 9 times [2020-10-13 23:44:54,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:54,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874666097] [2020-10-13 23:44:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:59,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:59,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 23:44:59,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:44:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:44:59,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:59,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:44:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:44:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 23:44:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:44:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:59,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:59,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:44:59,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:59,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:59,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:44:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:44:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:59,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:44:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:59,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:59,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:59,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:59,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:59,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:59,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:59,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:59,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:44:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:59,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:59,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:59,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:59,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:59,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:59,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:59,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:59,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:44:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:59,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:59,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:44:59,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:44:59,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:44:59,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:44:59,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:44:59,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:44:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:44:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:44:59,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:44:59,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:44:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 24 proven. 52 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-13 23:44:59,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874666097] [2020-10-13 23:44:59,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:44:59,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:44:59,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36624951] [2020-10-13 23:44:59,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:44:59,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:44:59,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:44:59,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:44:59,425 INFO L87 Difference]: Start difference. First operand 218 states and 268 transitions. Second operand 11 states. [2020-10-13 23:44:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:44:59,703 INFO L93 Difference]: Finished difference Result 305 states and 377 transitions. [2020-10-13 23:44:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:44:59,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-13 23:44:59,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:44:59,707 INFO L225 Difference]: With dead ends: 305 [2020-10-13 23:44:59,707 INFO L226 Difference]: Without dead ends: 276 [2020-10-13 23:44:59,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:44:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-13 23:44:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2020-10-13 23:44:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-13 23:44:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 337 transitions. [2020-10-13 23:44:59,733 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 337 transitions. Word has length 79 [2020-10-13 23:44:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:44:59,733 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 337 transitions. [2020-10-13 23:44:59,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:44:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 337 transitions. [2020-10-13 23:44:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 23:44:59,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:44:59,735 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:44:59,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:44:59,736 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:44:59,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:44:59,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1478524896, now seen corresponding path program 10 times [2020-10-13 23:44:59,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:44:59,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316301587] [2020-10-13 23:44:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:44:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:44:59,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:44:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:01,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:04,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:04,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 23:45:04,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:45:04,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:45:04,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:04,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:45:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:45:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 23:45:04,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:04,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:45:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:04,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:04,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:04,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:45:04,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:04,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:04,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:45:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:04,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:04,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:04,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:04,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:04,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:04,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:04,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:45:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:04,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:04,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:04,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:04,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:04,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:45:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:04,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:04,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:04,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:04,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:04,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 84 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-13 23:45:04,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316301587] [2020-10-13 23:45:04,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:45:04,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:45:04,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686343239] [2020-10-13 23:45:04,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:45:04,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:45:04,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:45:04,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:45:04,986 INFO L87 Difference]: Start difference. First operand 272 states and 337 transitions. Second operand 16 states. [2020-10-13 23:45:05,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:45:05,912 INFO L93 Difference]: Finished difference Result 347 states and 429 transitions. [2020-10-13 23:45:05,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:45:05,913 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-13 23:45:05,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:45:05,916 INFO L225 Difference]: With dead ends: 347 [2020-10-13 23:45:05,916 INFO L226 Difference]: Without dead ends: 345 [2020-10-13 23:45:05,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:45:05,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-13 23:45:05,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 306. [2020-10-13 23:45:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-13 23:45:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 381 transitions. [2020-10-13 23:45:05,945 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 381 transitions. Word has length 79 [2020-10-13 23:45:05,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:45:05,945 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 381 transitions. [2020-10-13 23:45:05,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:45:05,945 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 381 transitions. [2020-10-13 23:45:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 23:45:05,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:45:05,946 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:45:05,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:45:05,947 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:45:05,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:45:05,947 INFO L82 PathProgramCache]: Analyzing trace with hash 585038558, now seen corresponding path program 11 times [2020-10-13 23:45:05,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:45:05,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730208395] [2020-10-13 23:45:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:45:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:05,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:07,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:10,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:10,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 23:45:10,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:45:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:45:10,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:10,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:45:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:45:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:45:10,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:11,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:45:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:11,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:11,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:45:11,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:11,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:11,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:11,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:45:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:11,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:11,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:11,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:11,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:45:11,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:11,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:45:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:11,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:45:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:11,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:11,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:11,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:11,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:11,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:45:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:11,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:45:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:11,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:11,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:11,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:11,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:11,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:45:11,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:11,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:45:11,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 92 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 23:45:11,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730208395] [2020-10-13 23:45:11,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:45:11,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:45:11,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654110476] [2020-10-13 23:45:11,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:45:11,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:45:11,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:45:11,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:45:11,054 INFO L87 Difference]: Start difference. First operand 306 states and 381 transitions. Second operand 12 states. [2020-10-13 23:45:11,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:45:11,209 INFO L93 Difference]: Finished difference Result 664 states and 846 transitions. [2020-10-13 23:45:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:45:11,209 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-13 23:45:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:45:11,211 INFO L225 Difference]: With dead ends: 664 [2020-10-13 23:45:11,211 INFO L226 Difference]: Without dead ends: 381 [2020-10-13 23:45:11,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:45:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-13 23:45:11,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 326. [2020-10-13 23:45:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-13 23:45:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 407 transitions. [2020-10-13 23:45:11,243 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 407 transitions. Word has length 79 [2020-10-13 23:45:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:45:11,243 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 407 transitions. [2020-10-13 23:45:11,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:45:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 407 transitions. [2020-10-13 23:45:11,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 23:45:11,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:45:11,244 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:45:11,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:45:11,244 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:45:11,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:45:11,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1471518155, now seen corresponding path program 12 times [2020-10-13 23:45:11,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:45:11,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386628798] [2020-10-13 23:45:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:45:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:11,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:13,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:16,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:16,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 23:45:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:45:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:45:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:16,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:45:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:45:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 23:45:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:16,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:45:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:16,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:16,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:16,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:45:16,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:16,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:16,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:45:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:16,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:16,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:16,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:16,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:16,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:16,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:16,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:45:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:16,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:45:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:16,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:16,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:16,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:16,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:16,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:16,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:45:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 23:45:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:16,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:16,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:16,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:16,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:45:16,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:16,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:45:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 23:45:16,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386628798] [2020-10-13 23:45:16,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:45:16,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:45:16,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069751956] [2020-10-13 23:45:16,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:45:16,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:45:16,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:45:16,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:45:16,378 INFO L87 Difference]: Start difference. First operand 326 states and 407 transitions. Second operand 13 states. [2020-10-13 23:45:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:45:16,563 INFO L93 Difference]: Finished difference Result 702 states and 896 transitions. [2020-10-13 23:45:16,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:45:16,563 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-10-13 23:45:16,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:45:16,565 INFO L225 Difference]: With dead ends: 702 [2020-10-13 23:45:16,565 INFO L226 Difference]: Without dead ends: 401 [2020-10-13 23:45:16,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:45:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-13 23:45:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 346. [2020-10-13 23:45:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-13 23:45:16,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 433 transitions. [2020-10-13 23:45:16,596 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 433 transitions. Word has length 84 [2020-10-13 23:45:16,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:45:16,596 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 433 transitions. [2020-10-13 23:45:16,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:45:16,596 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 433 transitions. [2020-10-13 23:45:16,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 23:45:16,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:45:16,598 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:45:16,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:45:16,598 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:45:16,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:45:16,598 INFO L82 PathProgramCache]: Analyzing trace with hash -820914182, now seen corresponding path program 13 times [2020-10-13 23:45:16,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:45:16,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960437399] [2020-10-13 23:45:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:45:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:20,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:20,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:21,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:21,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 23:45:21,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:45:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:45:21,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:21,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:45:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:45:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 23:45:21,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:21,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:45:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:21,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:21,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:45:21,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:21,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:21,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:21,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:21,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:45:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:21,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:21,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:21,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:21,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:21,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:21,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:45:21,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:45:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:21,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:21,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:21,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:21,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:21,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:21,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:45:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:21,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:21,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:21,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:21,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:21,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:21,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:21,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:21,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 7 proven. 122 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-13 23:45:21,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960437399] [2020-10-13 23:45:21,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:45:21,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:45:21,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645735910] [2020-10-13 23:45:21,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:45:21,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:45:21,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:45:21,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:45:21,888 INFO L87 Difference]: Start difference. First operand 346 states and 433 transitions. Second operand 18 states. [2020-10-13 23:45:22,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:45:22,905 INFO L93 Difference]: Finished difference Result 393 states and 485 transitions. [2020-10-13 23:45:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:45:22,905 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-10-13 23:45:22,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:45:22,908 INFO L225 Difference]: With dead ends: 393 [2020-10-13 23:45:22,908 INFO L226 Difference]: Without dead ends: 391 [2020-10-13 23:45:22,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:45:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-13 23:45:22,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 354. [2020-10-13 23:45:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-13 23:45:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 442 transitions. [2020-10-13 23:45:22,941 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 442 transitions. Word has length 89 [2020-10-13 23:45:22,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:45:22,942 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 442 transitions. [2020-10-13 23:45:22,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:45:22,942 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 442 transitions. [2020-10-13 23:45:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 23:45:22,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:45:22,944 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:45:22,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:45:22,946 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:45:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:45:22,946 INFO L82 PathProgramCache]: Analyzing trace with hash 196804300, now seen corresponding path program 1 times [2020-10-13 23:45:22,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:45:22,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795832410] [2020-10-13 23:45:22,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:45:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:26,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:27,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 23:45:27,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:45:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:45:27,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:27,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:45:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:45:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 23:45:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:28,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:45:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:28,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:28,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:45:28,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:28,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:28,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:28,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:28,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:45:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:28,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:28,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:28,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:28,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:45:28,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:28,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:45:28,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:45:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:28,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:28,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:28,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:45:28,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:28,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:28,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:45:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:28,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:28,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:28,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:45:28,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:28,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:45:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 23:45:28,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:45:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-13 23:45:28,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795832410] [2020-10-13 23:45:28,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:45:28,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:45:28,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567925594] [2020-10-13 23:45:28,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:45:28,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:45:28,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:45:28,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:45:28,245 INFO L87 Difference]: Start difference. First operand 354 states and 442 transitions. Second operand 15 states. [2020-10-13 23:45:28,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:45:28,806 INFO L93 Difference]: Finished difference Result 367 states and 455 transitions. [2020-10-13 23:45:28,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:45:28,807 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2020-10-13 23:45:28,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:45:28,809 INFO L225 Difference]: With dead ends: 367 [2020-10-13 23:45:28,809 INFO L226 Difference]: Without dead ends: 342 [2020-10-13 23:45:28,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:45:28,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-13 23:45:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 319. [2020-10-13 23:45:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 23:45:28,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 398 transitions. [2020-10-13 23:45:28,838 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 398 transitions. Word has length 91 [2020-10-13 23:45:28,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:45:28,838 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 398 transitions. [2020-10-13 23:45:28,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:45:28,839 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 398 transitions. [2020-10-13 23:45:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 23:45:28,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:45:28,840 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:45:28,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:45:28,840 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:45:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:45:28,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1316089854, now seen corresponding path program 14 times [2020-10-13 23:45:28,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:45:28,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411839395] [2020-10-13 23:45:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:45:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:28,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:32,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:33,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:33,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 23:45:33,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:45:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:45:33,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:33,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:45:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:45:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 23:45:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:45:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:34,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:34,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:34,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:45:34,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:45:34,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:34,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:45:34,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:45:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:34,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:34,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:34,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:34,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:34,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:45:34,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:34,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:34,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:34,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:45:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:45:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:34,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:34,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:34,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:34,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:45:34,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:34,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:34,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:34,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 23:45:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:45:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:34,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:34,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:34,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:34,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:45:34,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:34,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:34,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:45:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 46 proven. 96 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-13 23:45:34,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411839395] [2020-10-13 23:45:34,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:45:34,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:45:34,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495205897] [2020-10-13 23:45:34,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:45:34,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:45:34,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:45:34,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:45:34,196 INFO L87 Difference]: Start difference. First operand 319 states and 398 transitions. Second operand 17 states. [2020-10-13 23:45:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:45:34,676 INFO L93 Difference]: Finished difference Result 427 states and 537 transitions. [2020-10-13 23:45:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:45:34,677 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 91 [2020-10-13 23:45:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:45:34,678 INFO L225 Difference]: With dead ends: 427 [2020-10-13 23:45:34,678 INFO L226 Difference]: Without dead ends: 425 [2020-10-13 23:45:34,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:45:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-13 23:45:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 287. [2020-10-13 23:45:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 23:45:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 357 transitions. [2020-10-13 23:45:34,708 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 357 transitions. Word has length 91 [2020-10-13 23:45:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:45:34,708 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 357 transitions. [2020-10-13 23:45:34,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:45:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 357 transitions. [2020-10-13 23:45:34,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 23:45:34,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:45:34,710 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:45:34,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:45:34,710 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:45:34,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:45:34,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1444081730, now seen corresponding path program 15 times [2020-10-13 23:45:34,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:45:34,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797199178] [2020-10-13 23:45:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:45:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:34,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:34,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:37,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:39,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:39,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 23:45:39,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:45:39,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 23:45:39,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:39,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:39,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:45:39,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:45:39,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 23:45:39,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:39,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:45:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:39,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:39,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:39,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:45:39,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:39,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:39,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:39,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:39,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:45:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:39,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:39,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:39,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:39,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:39,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:39,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:39,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:45:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:39,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:39,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:39,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:39,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:39,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:39,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:39,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:45:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:39,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:39,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:39,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:39,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:39,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 32 proven. 101 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-13 23:45:39,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797199178] [2020-10-13 23:45:39,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:45:39,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:45:39,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980205344] [2020-10-13 23:45:39,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:45:39,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:45:39,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:45:39,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:45:39,967 INFO L87 Difference]: Start difference. First operand 287 states and 357 transitions. Second operand 16 states. [2020-10-13 23:45:40,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:45:40,420 INFO L93 Difference]: Finished difference Result 389 states and 487 transitions. [2020-10-13 23:45:40,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:45:40,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 91 [2020-10-13 23:45:40,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:45:40,422 INFO L225 Difference]: With dead ends: 389 [2020-10-13 23:45:40,422 INFO L226 Difference]: Without dead ends: 387 [2020-10-13 23:45:40,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:45:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-13 23:45:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 299. [2020-10-13 23:45:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-13 23:45:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 373 transitions. [2020-10-13 23:45:40,453 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 373 transitions. Word has length 91 [2020-10-13 23:45:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:45:40,454 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 373 transitions. [2020-10-13 23:45:40,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:45:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 373 transitions. [2020-10-13 23:45:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 23:45:40,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:45:40,455 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:45:40,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:45:40,456 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:45:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:45:40,456 INFO L82 PathProgramCache]: Analyzing trace with hash 519100798, now seen corresponding path program 16 times [2020-10-13 23:45:40,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:45:40,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519748454] [2020-10-13 23:45:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:45:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:44,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:45,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:45,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 23:45:45,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:45:45,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:45:45,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:45,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:45,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:45:45,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:45:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 23:45:45,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:45,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:45:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:45,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:45,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:45,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:45:45,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:45,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:45,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:45,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:45,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:45,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:45,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:45,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:45,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:45:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:45,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:45,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:45,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:45,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:45,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:45:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:45,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:45,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:45,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:45,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:45,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:45,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:45,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:45,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:45:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:45,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:45,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:45,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:45,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:45,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:45,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:45,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:45,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-13 23:45:45,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519748454] [2020-10-13 23:45:45,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:45:45,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:45:45,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208815871] [2020-10-13 23:45:45,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:45:45,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:45:45,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:45:45,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:45:45,675 INFO L87 Difference]: Start difference. First operand 299 states and 373 transitions. Second operand 15 states. [2020-10-13 23:45:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:45:46,086 INFO L93 Difference]: Finished difference Result 413 states and 519 transitions. [2020-10-13 23:45:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:45:46,087 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2020-10-13 23:45:46,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:45:46,089 INFO L225 Difference]: With dead ends: 413 [2020-10-13 23:45:46,089 INFO L226 Difference]: Without dead ends: 411 [2020-10-13 23:45:46,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:45:46,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-13 23:45:46,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 311. [2020-10-13 23:45:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-13 23:45:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 389 transitions. [2020-10-13 23:45:46,120 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 389 transitions. Word has length 91 [2020-10-13 23:45:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:45:46,121 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 389 transitions. [2020-10-13 23:45:46,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:45:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 389 transitions. [2020-10-13 23:45:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 23:45:46,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:45:46,122 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:45:46,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:45:46,123 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:45:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:45:46,123 INFO L82 PathProgramCache]: Analyzing trace with hash 922326722, now seen corresponding path program 17 times [2020-10-13 23:45:46,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:45:46,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712376351] [2020-10-13 23:45:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:45:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:46,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:49,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:50,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:51,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:51,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 23:45:51,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:45:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:45:51,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:51,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:45:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:45:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 23:45:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:51,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:45:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:51,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:51,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:51,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:45:51,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:51,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:51,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:45:51,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:45:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:51,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:51,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:51,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:45:51,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:51,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:45:51,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:45:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:51,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:51,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:51,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:51,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:45:51,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:51,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:45:51,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:45:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:51,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:51,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:51,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:51,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:45:51,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:51,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:51,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:45:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 8 proven. 98 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-10-13 23:45:51,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712376351] [2020-10-13 23:45:51,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:45:51,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:45:51,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755408948] [2020-10-13 23:45:51,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:45:51,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:45:51,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:45:51,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:45:51,375 INFO L87 Difference]: Start difference. First operand 311 states and 389 transitions. Second operand 14 states. [2020-10-13 23:45:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:45:51,809 INFO L93 Difference]: Finished difference Result 437 states and 551 transitions. [2020-10-13 23:45:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:45:51,810 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 91 [2020-10-13 23:45:51,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:45:51,812 INFO L225 Difference]: With dead ends: 437 [2020-10-13 23:45:51,812 INFO L226 Difference]: Without dead ends: 435 [2020-10-13 23:45:51,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:45:51,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-13 23:45:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 323. [2020-10-13 23:45:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-13 23:45:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 405 transitions. [2020-10-13 23:45:51,846 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 405 transitions. Word has length 91 [2020-10-13 23:45:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:45:51,849 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 405 transitions. [2020-10-13 23:45:51,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:45:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 405 transitions. [2020-10-13 23:45:51,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 23:45:51,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:45:51,850 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:45:51,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:45:51,851 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:45:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:45:51,851 INFO L82 PathProgramCache]: Analyzing trace with hash 402301694, now seen corresponding path program 18 times [2020-10-13 23:45:51,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:45:51,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070009510] [2020-10-13 23:45:51,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:45:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:55,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:55,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 23:45:56,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:45:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:45:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:56,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:45:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:45:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 23:45:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:57,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:45:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:57,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:57,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:57,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:45:57,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:57,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:57,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:57,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:45:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:45:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:45:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:57,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:57,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:57,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:57,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:45:57,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:57,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:57,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:57,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:45:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:57,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:57,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:57,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:57,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:57,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:45:57,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:57,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:57,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:45:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:57,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:45:57,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:45:57,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:45:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:45:57,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:45:57,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:45:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:45:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:45:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:45:57,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:45:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 6 proven. 82 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-13 23:45:57,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070009510] [2020-10-13 23:45:57,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:45:57,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:45:57,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418837726] [2020-10-13 23:45:57,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:45:57,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:45:57,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:45:57,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:45:57,181 INFO L87 Difference]: Start difference. First operand 323 states and 405 transitions. Second operand 13 states. [2020-10-13 23:45:57,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:45:57,547 INFO L93 Difference]: Finished difference Result 461 states and 583 transitions. [2020-10-13 23:45:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:45:57,548 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-10-13 23:45:57,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:45:57,550 INFO L225 Difference]: With dead ends: 461 [2020-10-13 23:45:57,551 INFO L226 Difference]: Without dead ends: 459 [2020-10-13 23:45:57,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:45:57,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-13 23:45:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 335. [2020-10-13 23:45:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-13 23:45:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 421 transitions. [2020-10-13 23:45:57,583 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 421 transitions. Word has length 91 [2020-10-13 23:45:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:45:57,583 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 421 transitions. [2020-10-13 23:45:57,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:45:57,583 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 421 transitions. [2020-10-13 23:45:57,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 23:45:57,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:45:57,585 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:45:57,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:45:57,585 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:45:57,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:45:57,585 INFO L82 PathProgramCache]: Analyzing trace with hash 283729218, now seen corresponding path program 19 times [2020-10-13 23:45:57,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:45:57,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070584286] [2020-10-13 23:45:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:45:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:45:57,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:45:57,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:01,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:02,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:02,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 23:46:02,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:46:02,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:46:02,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:02,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:46:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:46:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 23:46:02,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:02,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:46:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:46:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:46:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:02,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:46:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:46:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:02,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:46:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:02,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:02,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:02,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:02,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:02,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:46:02,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:02,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:02,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:02,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:02,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:46:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:02,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:02,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:02,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:46:02,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:02,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:46:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:02,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:02,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:02,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:46:02,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:02,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 6 proven. 61 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 23:46:02,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070584286] [2020-10-13 23:46:02,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:46:02,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:46:02,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779860778] [2020-10-13 23:46:02,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:46:02,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:46:02,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:46:02,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:46:02,754 INFO L87 Difference]: Start difference. First operand 335 states and 421 transitions. Second operand 12 states. [2020-10-13 23:46:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:46:03,093 INFO L93 Difference]: Finished difference Result 357 states and 445 transitions. [2020-10-13 23:46:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:46:03,093 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-10-13 23:46:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:46:03,095 INFO L225 Difference]: With dead ends: 357 [2020-10-13 23:46:03,095 INFO L226 Difference]: Without dead ends: 355 [2020-10-13 23:46:03,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:46:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-13 23:46:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 219. [2020-10-13 23:46:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-13 23:46:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 267 transitions. [2020-10-13 23:46:03,120 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 267 transitions. Word has length 91 [2020-10-13 23:46:03,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:46:03,120 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 267 transitions. [2020-10-13 23:46:03,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:46:03,121 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 267 transitions. [2020-10-13 23:46:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 23:46:03,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:46:03,122 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:46:03,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:46:03,122 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:46:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:46:03,122 INFO L82 PathProgramCache]: Analyzing trace with hash 804239011, now seen corresponding path program 14 times [2020-10-13 23:46:03,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:46:03,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856409916] [2020-10-13 23:46:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:46:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:06,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:08,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:08,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 23:46:08,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:46:08,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 23:46:08,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:08,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:46:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:46:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 23:46:08,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:08,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:46:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:08,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:08,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:46:08,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:46:08,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:08,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:46:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:46:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:08,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:46:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:08,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:08,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:08,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:08,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:46:08,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:08,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:08,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:46:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:08,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:08,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:08,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:08,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:46:08,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:08,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:46:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:08,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:08,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:08,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:08,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:08,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:46:08,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:08,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:08,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:08,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:08,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:08,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:46:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:08,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:08,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:08,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:46:08,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:08,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:08,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:08,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:08,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:08,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 40 proven. 88 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-13 23:46:08,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856409916] [2020-10-13 23:46:08,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:46:08,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:46:08,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481909878] [2020-10-13 23:46:08,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:46:08,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:46:08,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:46:08,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:46:08,275 INFO L87 Difference]: Start difference. First operand 219 states and 267 transitions. Second operand 13 states. [2020-10-13 23:46:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:46:08,651 INFO L93 Difference]: Finished difference Result 293 states and 359 transitions. [2020-10-13 23:46:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:46:08,651 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 97 [2020-10-13 23:46:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:46:08,654 INFO L225 Difference]: With dead ends: 293 [2020-10-13 23:46:08,654 INFO L226 Difference]: Without dead ends: 269 [2020-10-13 23:46:08,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:46:08,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-13 23:46:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 261. [2020-10-13 23:46:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 23:46:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 322 transitions. [2020-10-13 23:46:08,690 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 322 transitions. Word has length 97 [2020-10-13 23:46:08,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:46:08,690 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 322 transitions. [2020-10-13 23:46:08,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:46:08,691 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 322 transitions. [2020-10-13 23:46:08,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 23:46:08,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:46:08,692 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:46:08,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:46:08,692 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:46:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:46:08,693 INFO L82 PathProgramCache]: Analyzing trace with hash 360338337, now seen corresponding path program 15 times [2020-10-13 23:46:08,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:46:08,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127814686] [2020-10-13 23:46:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:46:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:08,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:08,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:12,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:13,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:13,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 23:46:13,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:46:13,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 23:46:13,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:13,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:46:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:46:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 23:46:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:46:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:13,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:13,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:46:13,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:13,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:46:13,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:13,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:46:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:46:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:13,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:46:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:13,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:13,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:13,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:13,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:46:13,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:13,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:13,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:13,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:46:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:13,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:13,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:14,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:46:14,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:14,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:14,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:46:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:14,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:14,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:14,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:14,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:46:14,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:14,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:14,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:14,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:14,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:14,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:14,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:46:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:14,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:14,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:46:14,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:14,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:46:14,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:14,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:14,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:14,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:14,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:14,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:46:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 32 proven. 113 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-10-13 23:46:14,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127814686] [2020-10-13 23:46:14,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:46:14,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:46:14,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685409741] [2020-10-13 23:46:14,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:46:14,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:46:14,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:46:14,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:46:14,048 INFO L87 Difference]: Start difference. First operand 261 states and 322 transitions. Second operand 18 states. [2020-10-13 23:46:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:46:15,363 INFO L93 Difference]: Finished difference Result 336 states and 414 transitions. [2020-10-13 23:46:15,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 23:46:15,364 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 97 [2020-10-13 23:46:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:46:15,366 INFO L225 Difference]: With dead ends: 336 [2020-10-13 23:46:15,366 INFO L226 Difference]: Without dead ends: 334 [2020-10-13 23:46:15,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:46:15,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-13 23:46:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 298. [2020-10-13 23:46:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-13 23:46:15,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 370 transitions. [2020-10-13 23:46:15,402 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 370 transitions. Word has length 97 [2020-10-13 23:46:15,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:46:15,402 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 370 transitions. [2020-10-13 23:46:15,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:46:15,402 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 370 transitions. [2020-10-13 23:46:15,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 23:46:15,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:46:15,404 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:46:15,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 23:46:15,404 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:46:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:46:15,404 INFO L82 PathProgramCache]: Analyzing trace with hash 319663587, now seen corresponding path program 16 times [2020-10-13 23:46:15,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:46:15,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979632757] [2020-10-13 23:46:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:46:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:15,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking...