/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_copyInit_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:34:18,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:34:18,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:34:18,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:34:18,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:34:18,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:34:18,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:34:18,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:34:18,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:34:18,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:34:18,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:34:18,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:34:18,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:34:18,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:34:18,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:34:18,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:34:18,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:34:18,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:34:18,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:34:18,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:34:18,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:34:18,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:34:18,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:34:18,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:34:18,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:34:18,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:34:18,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:34:18,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:34:18,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:34:18,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:34:18,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:34:18,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:34:18,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:34:18,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:34:18,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:34:18,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:34:18,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:34:18,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:34:18,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:34:18,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:34:18,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:34:18,492 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 23:34:18,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:34:18,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:34:18,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:34:18,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:34:18,534 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:34:18,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:34:18,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:34:18,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:34:18,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:34:18,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:34:18,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:34:18,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:34:18,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:34:18,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:34:18,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:34:18,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:34:18,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:34:18,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:34:18,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:34:18,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:34:18,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:34:18,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:34:18,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:34:18,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:34:18,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:34:18,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:34:18,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:34:18,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:34:18,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:34:18,540 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 23:34:18,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:34:18,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:34:18,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:34:18,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:34:18,859 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:34:18,860 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInit_ground.i [2020-10-13 23:34:18,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/138625076/a4080cd2a1d047778d084d368db60923/FLAG0ff28ee48 [2020-10-13 23:34:19,409 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:34:19,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copyInit_ground.i [2020-10-13 23:34:19,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/138625076/a4080cd2a1d047778d084d368db60923/FLAG0ff28ee48 [2020-10-13 23:34:19,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/138625076/a4080cd2a1d047778d084d368db60923 [2020-10-13 23:34:19,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:34:19,837 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:34:19,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:34:19,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:34:19,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:34:19,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:34:19" (1/1) ... [2020-10-13 23:34:19,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dbf34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:19, skipping insertion in model container [2020-10-13 23:34:19,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:34:19" (1/1) ... [2020-10-13 23:34:19,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:34:19,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:34:20,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:34:20,056 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:34:20,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:34:20,094 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:34:20,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:20 WrapperNode [2020-10-13 23:34:20,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:34:20,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:34:20,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:34:20,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:34:20,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:20" (1/1) ... [2020-10-13 23:34:20,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:20" (1/1) ... [2020-10-13 23:34:20,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:20" (1/1) ... [2020-10-13 23:34:20,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:20" (1/1) ... [2020-10-13 23:34:20,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:20" (1/1) ... [2020-10-13 23:34:20,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:20" (1/1) ... [2020-10-13 23:34:20,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:20" (1/1) ... [2020-10-13 23:34:20,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:34:20,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:34:20,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:34:20,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:34:20,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:20" (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 23:34:20,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:34:20,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:34:20,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:34:20,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:34:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:34:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:34:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:34:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:34:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:34:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:34:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:34:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:34:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:34:20,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:34:20,511 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:34:20,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:34:20 BoogieIcfgContainer [2020-10-13 23:34:20,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:34:20,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:34:20,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:34:20,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:34:20,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:34:19" (1/3) ... [2020-10-13 23:34:20,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1e486b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:34:20, skipping insertion in model container [2020-10-13 23:34:20,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:20" (2/3) ... [2020-10-13 23:34:20,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1e486b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:34:20, skipping insertion in model container [2020-10-13 23:34:20,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:34:20" (3/3) ... [2020-10-13 23:34:20,526 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copyInit_ground.i [2020-10-13 23:34:20,537 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:34:20,544 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:34:20,558 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:34:20,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:34:20,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:34:20,581 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:34:20,581 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:34:20,581 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:34:20,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:34:20,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:34:20,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:34:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-13 23:34:20,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:34:20,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:20,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:20,604 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1085876810, now seen corresponding path program 1 times [2020-10-13 23:34:20,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:20,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876969139] [2020-10-13 23:34:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:20,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:20,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:20,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:34:20,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:34:20,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-13 23:34:20,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:20,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:34:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:20,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:34:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:21,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:21,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:34:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:21,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:21,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:21,031 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 23:34:21,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876969139] [2020-10-13 23:34:21,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:34:21,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:34:21,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923340488] [2020-10-13 23:34:21,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:34:21,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:21,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:34:21,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:34:21,072 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-13 23:34:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:21,183 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-10-13 23:34:21,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:34:21,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-13 23:34:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:21,196 INFO L225 Difference]: With dead ends: 45 [2020-10-13 23:34:21,196 INFO L226 Difference]: Without dead ends: 21 [2020-10-13 23:34:21,200 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 23:34:21,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-13 23:34:21,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-13 23:34:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-13 23:34:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-13 23:34:21,263 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-13 23:34:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:21,263 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-13 23:34:21,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:34:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-13 23:34:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:34:21,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:21,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:21,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:34:21,266 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:21,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:21,267 INFO L82 PathProgramCache]: Analyzing trace with hash -274239930, now seen corresponding path program 1 times [2020-10-13 23:34:21,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:21,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548667147] [2020-10-13 23:34:21,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:21,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:21,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:34:21,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:34:21,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-13 23:34:21,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:21,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:34:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:34:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:34:21,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:34:21,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:21,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:21,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:21,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:21,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:34:21,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:21,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:21,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:21,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:21,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:34:21,603 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 23:34:21,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548667147] [2020-10-13 23:34:21,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:34:21,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:34:21,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483195258] [2020-10-13 23:34:21,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:34:21,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:21,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:34:21,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:34:21,607 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2020-10-13 23:34:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:21,671 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-13 23:34:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:34:21,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 23:34:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:21,673 INFO L225 Difference]: With dead ends: 38 [2020-10-13 23:34:21,673 INFO L226 Difference]: Without dead ends: 24 [2020-10-13 23:34:21,675 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 23:34:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-13 23:34:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-13 23:34:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-13 23:34:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-13 23:34:21,682 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-13 23:34:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:21,683 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-13 23:34:21,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:34:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-13 23:34:21,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 23:34:21,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:21,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:21,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:34:21,685 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:21,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:21,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1258895644, now seen corresponding path program 1 times [2020-10-13 23:34:21,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:21,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126653631] [2020-10-13 23:34:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:21,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:21,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:22,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:22,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:34:22,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-13 23:34:22,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:22,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:34:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 23:34:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:34:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:22,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:22,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:22,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:22,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:34:22,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:22,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:22,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:22,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:22,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:22,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:22,261 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 23:34:22,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126653631] [2020-10-13 23:34:22,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:22,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:34:22,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376215170] [2020-10-13 23:34:22,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:34:22,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:22,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:34:22,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:34:22,269 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-10-13 23:34:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:22,343 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 23:34:22,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:34:22,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-13 23:34:22,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:22,345 INFO L225 Difference]: With dead ends: 42 [2020-10-13 23:34:22,345 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 23:34:22,346 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 23:34:22,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 23:34:22,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-13 23:34:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 23:34:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-13 23:34:22,353 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 18 [2020-10-13 23:34:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:22,353 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-13 23:34:22,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:34:22,354 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-13 23:34:22,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:34:22,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:22,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:22,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:34:22,355 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:22,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1615172030, now seen corresponding path program 2 times [2020-10-13 23:34:22,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:22,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999799051] [2020-10-13 23:34:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:22,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:22,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 23:34:22,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-13 23:34:22,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:22,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:34:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:34:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:34:22,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:22,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:22,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:22,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:22,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:22,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:34:22,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:22,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:22,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:34:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 23:34:22,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999799051] [2020-10-13 23:34:22,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:22,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:34:22,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849891729] [2020-10-13 23:34:22,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:34:22,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:22,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:34:22,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:34:22,960 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2020-10-13 23:34:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:23,094 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-13 23:34:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:34:23,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-13 23:34:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:23,098 INFO L225 Difference]: With dead ends: 47 [2020-10-13 23:34:23,099 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:34:23,100 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 23:34:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:34:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 23:34:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 23:34:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-13 23:34:23,113 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2020-10-13 23:34:23,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:23,114 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-13 23:34:23,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:34:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-13 23:34:23,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 23:34:23,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:23,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:23,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:34:23,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:23,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:23,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1115557856, now seen corresponding path program 3 times [2020-10-13 23:34:23,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:23,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193583892] [2020-10-13 23:34:23,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:23,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:24,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:24,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:34:24,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:24,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-10-13 23:34:24,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:24,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:24,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:34:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 23:34:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:34:24,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:24,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:24,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:24,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:24,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:34:24,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:24,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 23:34:24,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193583892] [2020-10-13 23:34:24,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:24,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:34:24,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986070290] [2020-10-13 23:34:24,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:34:24,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:24,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:34:24,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:34:24,233 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 7 states. [2020-10-13 23:34:24,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:24,338 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-13 23:34:24,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:34:24,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-13 23:34:24,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:24,340 INFO L225 Difference]: With dead ends: 52 [2020-10-13 23:34:24,340 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 23:34:24,342 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 23:34:24,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 23:34:24,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-13 23:34:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 23:34:24,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-13 23:34:24,354 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 24 [2020-10-13 23:34:24,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:24,354 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-13 23:34:24,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:34:24,354 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-13 23:34:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 23:34:24,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:24,357 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:24,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:34:24,357 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:24,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1574965310, now seen corresponding path program 4 times [2020-10-13 23:34:24,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:24,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446530534] [2020-10-13 23:34:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:25,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:25,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 23:34:25,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:25,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1593 [2020-10-13 23:34:25,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:25,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:34:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:34:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:34:25,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:26,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:26,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:26,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:26,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:26,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:26,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:34:26,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:26,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:26,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 23:34:26,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446530534] [2020-10-13 23:34:26,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:26,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:34:26,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476580018] [2020-10-13 23:34:26,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:34:26,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:26,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:34:26,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:34:26,035 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2020-10-13 23:34:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:26,133 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-13 23:34:26,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:34:26,134 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-13 23:34:26,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:26,135 INFO L225 Difference]: With dead ends: 57 [2020-10-13 23:34:26,135 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 23:34:26,136 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 23:34:26,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 23:34:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 23:34:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:34:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-13 23:34:26,142 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 27 [2020-10-13 23:34:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:26,143 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-13 23:34:26,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:34:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-13 23:34:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 23:34:26,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:26,144 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:26,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:34:26,145 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:26,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:26,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1364556508, now seen corresponding path program 5 times [2020-10-13 23:34:26,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:26,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731882038] [2020-10-13 23:34:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:26,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:28,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:28,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:34:28,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:28,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2334 [2020-10-13 23:34:28,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:28,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:28,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:34:28,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 23:34:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:34:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:28,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:28,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:28,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:28,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:34:28,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:28,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:28,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:28,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:28,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:34:28,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731882038] [2020-10-13 23:34:28,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:28,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:34:28,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986964481] [2020-10-13 23:34:28,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:34:28,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:28,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:34:28,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:34:28,566 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 9 states. [2020-10-13 23:34:28,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:28,655 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-10-13 23:34:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:34:28,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-13 23:34:28,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:28,656 INFO L225 Difference]: With dead ends: 62 [2020-10-13 23:34:28,657 INFO L226 Difference]: Without dead ends: 39 [2020-10-13 23:34:28,657 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 23:34:28,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-13 23:34:28,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-13 23:34:28,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 23:34:28,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-13 23:34:28,663 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 30 [2020-10-13 23:34:28,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:28,663 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-13 23:34:28,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:34:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-13 23:34:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 23:34:28,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:28,665 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:28,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:34:28,665 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:28,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:28,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2008503354, now seen corresponding path program 6 times [2020-10-13 23:34:28,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:28,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845366777] [2020-10-13 23:34:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:28,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:31,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:31,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 23:34:31,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:31,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2451 [2020-10-13 23:34:31,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:31,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:34:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:34:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:34:31,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:31,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:31,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:31,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:31,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:31,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:31,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:34:31,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:31,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:31,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 23:34:31,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845366777] [2020-10-13 23:34:31,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:31,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:34:31,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986400381] [2020-10-13 23:34:31,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:34:31,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:31,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:34:31,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:34:31,258 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 10 states. [2020-10-13 23:34:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:31,401 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-13 23:34:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:34:31,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-13 23:34:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:31,402 INFO L225 Difference]: With dead ends: 67 [2020-10-13 23:34:31,403 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:34:31,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 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 23:34:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:34:31,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 23:34:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 23:34:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-13 23:34:31,414 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 33 [2020-10-13 23:34:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:31,416 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-13 23:34:31,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:34:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-13 23:34:31,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 23:34:31,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:31,418 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:31,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:34:31,419 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:31,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1155270616, now seen corresponding path program 7 times [2020-10-13 23:34:31,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:31,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343667350] [2020-10-13 23:34:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:32,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:35,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:35,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:34:35,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:35,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4384 [2020-10-13 23:34:35,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:35,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:34:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:34:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:34:35,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:35,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:35,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:35,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:35,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:34:35,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:35,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 23:34:35,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343667350] [2020-10-13 23:34:35,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:35,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:34:35,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532379507] [2020-10-13 23:34:35,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:34:35,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:35,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:34:35,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:34:35,928 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 11 states. [2020-10-13 23:34:36,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:36,059 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2020-10-13 23:34:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:34:36,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-13 23:34:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:36,061 INFO L225 Difference]: With dead ends: 72 [2020-10-13 23:34:36,061 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 23:34:36,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 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 23:34:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 23:34:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-13 23:34:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 23:34:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-10-13 23:34:36,070 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 36 [2020-10-13 23:34:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:36,070 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-10-13 23:34:36,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:34:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-10-13 23:34:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 23:34:36,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:36,076 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:36,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:34:36,077 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:36,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:36,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2090911178, now seen corresponding path program 8 times [2020-10-13 23:34:36,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:36,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658689940] [2020-10-13 23:34:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:36,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:36,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:41,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:41,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 23:34:41,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:41,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:34:41,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:41,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:34:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:34:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:34:41,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:41,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:41,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:41,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:41,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:41,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:34:41,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:41,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:41,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:41,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:34:41,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658689940] [2020-10-13 23:34:41,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:41,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:34:41,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932702502] [2020-10-13 23:34:41,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:34:41,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:41,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:34:41,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:34:41,259 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 12 states. [2020-10-13 23:34:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:41,461 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-13 23:34:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:34:41,462 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-13 23:34:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:41,464 INFO L225 Difference]: With dead ends: 77 [2020-10-13 23:34:41,464 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 23:34:41,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:34:41,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 23:34:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 23:34:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:34:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-13 23:34:41,479 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 39 [2020-10-13 23:34:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:41,480 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-13 23:34:41,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:34:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-13 23:34:41,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 23:34:41,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:41,483 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:41,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:34:41,484 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:41,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:41,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1997490476, now seen corresponding path program 9 times [2020-10-13 23:34:41,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:41,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973172428] [2020-10-13 23:34:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:41,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:43,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:46,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:46,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 23:34:46,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:34:46,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:46,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:34:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 23:34:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:34:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:46,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:46,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:46,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:46,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:46,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:34:46,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:46,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:46,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:46,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:46,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 23:34:46,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973172428] [2020-10-13 23:34:46,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:46,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:34:46,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845355208] [2020-10-13 23:34:46,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:34:46,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:46,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:34:46,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:34:46,656 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 13 states. [2020-10-13 23:34:46,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:46,793 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-10-13 23:34:46,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:34:46,793 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-13 23:34:46,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:46,794 INFO L225 Difference]: With dead ends: 82 [2020-10-13 23:34:46,794 INFO L226 Difference]: Without dead ends: 51 [2020-10-13 23:34:46,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:34:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-13 23:34:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-13 23:34:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 23:34:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-10-13 23:34:46,806 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 42 [2020-10-13 23:34:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:46,809 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-10-13 23:34:46,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:34:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-10-13 23:34:46,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 23:34:46,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:46,811 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:46,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:34:46,811 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:46,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:46,811 INFO L82 PathProgramCache]: Analyzing trace with hash 527876658, now seen corresponding path program 10 times [2020-10-13 23:34:46,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:46,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243616624] [2020-10-13 23:34:46,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:46,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:51,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:51,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 23:34:51,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:51,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:34:51,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:51,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:34:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:34:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:34:51,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:52,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:52,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:52,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:52,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:52,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:52,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:34:52,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:52,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:52,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-13 23:34:52,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243616624] [2020-10-13 23:34:52,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:52,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:34:52,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343709278] [2020-10-13 23:34:52,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:34:52,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:52,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:34:52,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:34:52,019 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 14 states. [2020-10-13 23:34:52,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:52,143 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-13 23:34:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:34:52,144 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-13 23:34:52,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:52,145 INFO L225 Difference]: With dead ends: 87 [2020-10-13 23:34:52,145 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:34:52,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:34:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:34:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 23:34:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 23:34:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-13 23:34:52,154 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 45 [2020-10-13 23:34:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:52,155 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-13 23:34:52,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:34:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-13 23:34:52,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 23:34:52,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:52,156 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:52,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:34:52,156 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:52,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1374848976, now seen corresponding path program 11 times [2020-10-13 23:34:52,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:52,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794584203] [2020-10-13 23:34:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:52,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:52,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:54,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:57,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 23:34:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:34:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:34:57,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:57,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:34:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 23:34:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:34:57,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:57,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:57,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:34:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:57,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 23:34:57,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794584203] [2020-10-13 23:34:57,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:57,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:34:57,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626476009] [2020-10-13 23:34:57,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:34:57,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:57,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:34:57,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:34:57,352 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 15 states. [2020-10-13 23:34:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:57,508 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2020-10-13 23:34:57,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:34:57,509 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-13 23:34:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:57,510 INFO L225 Difference]: With dead ends: 92 [2020-10-13 23:34:57,510 INFO L226 Difference]: Without dead ends: 57 [2020-10-13 23:34:57,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:34:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-13 23:34:57,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-13 23:34:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-13 23:34:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-13 23:34:57,516 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 48 [2020-10-13 23:34:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:57,516 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-13 23:34:57,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:34:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-13 23:34:57,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 23:34:57,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:57,518 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:57,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:34:57,518 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:57,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:57,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1289950162, now seen corresponding path program 12 times [2020-10-13 23:34:57,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:57,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034207178] [2020-10-13 23:34:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:57,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:57,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:02,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:02,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 23:35:02,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:35:02,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:02,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:35:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:35:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:35:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:02,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:02,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:02,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:02,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:02,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:02,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:02,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-13 23:35:02,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034207178] [2020-10-13 23:35:02,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:02,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:35:02,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452241114] [2020-10-13 23:35:02,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:35:02,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:02,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:35:02,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:35:02,741 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 16 states. [2020-10-13 23:35:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:02,869 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-13 23:35:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:35:02,870 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-10-13 23:35:02,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:02,870 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:35:02,871 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 23:35:02,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:35:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 23:35:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 23:35:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 23:35:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-10-13 23:35:02,883 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 51 [2020-10-13 23:35:02,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:02,883 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-10-13 23:35:02,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:35:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-10-13 23:35:02,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 23:35:02,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:02,884 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:02,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:35:02,885 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:02,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1556118220, now seen corresponding path program 13 times [2020-10-13 23:35:02,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:02,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676502054] [2020-10-13 23:35:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:05,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:07,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:07,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 23:35:07,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 23:35:07,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:07,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:35:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 23:35:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:35:07,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:08,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:08,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:08,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:08,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:08,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:08,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:08,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:08,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:08,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:08,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:08,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 23:35:08,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676502054] [2020-10-13 23:35:08,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:08,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:35:08,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254464501] [2020-10-13 23:35:08,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:35:08,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:08,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:35:08,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:35:08,088 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 17 states. [2020-10-13 23:35:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:08,250 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2020-10-13 23:35:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:35:08,250 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-13 23:35:08,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:08,251 INFO L225 Difference]: With dead ends: 102 [2020-10-13 23:35:08,251 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 23:35:08,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:35:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 23:35:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-13 23:35:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 23:35:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-10-13 23:35:08,256 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 54 [2020-10-13 23:35:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:08,256 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-10-13 23:35:08,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:35:08,256 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-10-13 23:35:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 23:35:08,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:08,257 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:08,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:35:08,260 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:08,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:08,261 INFO L82 PathProgramCache]: Analyzing trace with hash 770750506, now seen corresponding path program 14 times [2020-10-13 23:35:08,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:08,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711500444] [2020-10-13 23:35:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:08,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:13,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:13,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 23:35:13,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:13,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:35:13,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:13,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:35:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:35:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:35:13,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:13,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:13,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:13,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:13,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:13,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:13,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:35:13,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711500444] [2020-10-13 23:35:13,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:13,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:35:13,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707945355] [2020-10-13 23:35:13,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:35:13,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:13,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:35:13,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:35:13,496 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 18 states. [2020-10-13 23:35:13,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:13,688 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-13 23:35:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:35:13,688 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-10-13 23:35:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:13,689 INFO L225 Difference]: With dead ends: 107 [2020-10-13 23:35:13,689 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 23:35:13,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:35:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 23:35:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 23:35:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 23:35:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-13 23:35:13,695 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 57 [2020-10-13 23:35:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:13,696 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-13 23:35:13,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:35:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-13 23:35:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:35:13,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:13,697 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:13,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:35:13,697 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:13,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:13,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1363570744, now seen corresponding path program 15 times [2020-10-13 23:35:13,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:13,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336003047] [2020-10-13 23:35:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:13,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:13,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:18,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:18,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 23:35:18,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-13 23:35:18,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:18,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:35:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:35:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:35:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:19,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:19,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:19,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:19,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:19,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:19,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:19,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-13 23:35:19,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336003047] [2020-10-13 23:35:19,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:19,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:35:19,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011472734] [2020-10-13 23:35:19,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:35:19,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:19,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:35:19,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:35:19,018 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 19 states. [2020-10-13 23:35:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:19,182 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2020-10-13 23:35:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:35:19,182 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2020-10-13 23:35:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:19,184 INFO L225 Difference]: With dead ends: 112 [2020-10-13 23:35:19,184 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 23:35:19,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:35:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 23:35:19,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-13 23:35:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 23:35:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-10-13 23:35:19,190 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 60 [2020-10-13 23:35:19,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:19,191 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-10-13 23:35:19,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:35:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-10-13 23:35:19,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 23:35:19,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:19,192 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:19,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:35:19,192 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:19,193 INFO L82 PathProgramCache]: Analyzing trace with hash -938400218, now seen corresponding path program 16 times [2020-10-13 23:35:19,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:19,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938685500] [2020-10-13 23:35:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:24,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:24,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 23:35:24,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:24,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5494 [2020-10-13 23:35:24,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:24,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:35:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:35:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:35:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:24,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:24,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:24,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:24,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:24,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:24,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-13 23:35:24,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938685500] [2020-10-13 23:35:24,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:24,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:35:24,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62604091] [2020-10-13 23:35:24,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:35:24,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:24,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:35:24,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:35:24,957 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 20 states. [2020-10-13 23:35:25,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:25,167 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-10-13 23:35:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:35:25,167 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2020-10-13 23:35:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:25,168 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:35:25,168 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 23:35:25,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:35:25,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 23:35:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 23:35:25,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 23:35:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-13 23:35:25,172 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 63 [2020-10-13 23:35:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:25,172 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-13 23:35:25,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:35:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-13 23:35:25,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:35:25,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:25,173 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:25,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:35:25,173 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:25,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:25,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1438435012, now seen corresponding path program 17 times [2020-10-13 23:35:25,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:25,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677028893] [2020-10-13 23:35:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:25,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:30,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:30,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 23:35:30,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:35:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:35:30,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:30,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:35:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 23:35:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 23:35:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:30,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:30,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:30,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:30,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:35:30,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:30,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:30,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-13 23:35:30,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677028893] [2020-10-13 23:35:30,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:30,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:35:30,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017637053] [2020-10-13 23:35:30,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:35:30,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:30,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:35:30,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:35:30,545 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 21 states. [2020-10-13 23:35:30,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:30,853 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2020-10-13 23:35:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:35:30,854 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 66 [2020-10-13 23:35:30,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:30,855 INFO L225 Difference]: With dead ends: 122 [2020-10-13 23:35:30,855 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 23:35:30,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:35:30,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 23:35:30,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-10-13 23:35:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 23:35:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2020-10-13 23:35:30,871 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 66 [2020-10-13 23:35:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:30,871 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2020-10-13 23:35:30,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:35:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2020-10-13 23:35:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:35:30,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:30,875 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:30,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:35:30,875 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:30,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:30,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1038272990, now seen corresponding path program 18 times [2020-10-13 23:35:30,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:30,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718049872] [2020-10-13 23:35:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:31,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:35,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:35,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 23:35:35,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:35:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:35:35,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:35,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:35:35,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:35:35,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:35:35,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:36,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:36,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:36,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:36,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:36,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:36,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:36,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:36,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-13 23:35:36,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718049872] [2020-10-13 23:35:36,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:36,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 23:35:36,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291650909] [2020-10-13 23:35:36,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 23:35:36,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:36,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 23:35:36,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:35:36,279 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 22 states. [2020-10-13 23:35:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:36,568 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2020-10-13 23:35:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 23:35:36,569 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 69 [2020-10-13 23:35:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:36,570 INFO L225 Difference]: With dead ends: 127 [2020-10-13 23:35:36,571 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 23:35:36,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:35:36,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 23:35:36,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 23:35:36,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:35:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-10-13 23:35:36,579 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 69 [2020-10-13 23:35:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:36,580 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-10-13 23:35:36,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 23:35:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-10-13 23:35:36,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 23:35:36,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:36,581 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:36,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:35:36,582 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:36,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:36,583 INFO L82 PathProgramCache]: Analyzing trace with hash 673783744, now seen corresponding path program 19 times [2020-10-13 23:35:36,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:36,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486551528] [2020-10-13 23:35:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:36,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:41,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:41,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 23:35:41,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:35:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:35:41,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:41,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:35:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 23:35:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 23:35:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:41,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:41,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:41,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:41,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:41,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:41,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:35:41,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:41,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-13 23:35:41,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486551528] [2020-10-13 23:35:41,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:41,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:35:41,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139326087] [2020-10-13 23:35:41,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:35:41,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:41,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:35:41,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:35:41,975 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 23 states. [2020-10-13 23:35:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:42,201 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2020-10-13 23:35:42,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:35:42,201 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 72 [2020-10-13 23:35:42,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:42,202 INFO L225 Difference]: With dead ends: 132 [2020-10-13 23:35:42,202 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 23:35:42,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:35:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 23:35:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-13 23:35:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 23:35:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2020-10-13 23:35:42,208 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 72 [2020-10-13 23:35:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:42,210 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2020-10-13 23:35:42,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:35:42,210 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2020-10-13 23:35:42,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 23:35:42,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:42,211 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:42,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:35:42,211 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:42,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:42,212 INFO L82 PathProgramCache]: Analyzing trace with hash 624158750, now seen corresponding path program 20 times [2020-10-13 23:35:42,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:42,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839411222] [2020-10-13 23:35:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:47,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:47,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 23:35:47,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:35:47,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 23:35:47,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:47,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:47,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 23:35:47,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:35:47,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 23:35:47,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:47,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:47,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:47,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:47,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:47,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:47,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:47,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-13 23:35:47,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839411222] [2020-10-13 23:35:47,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:47,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 23:35:47,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172692212] [2020-10-13 23:35:47,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 23:35:47,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:47,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 23:35:47,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:35:47,574 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 24 states. [2020-10-13 23:35:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:47,830 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2020-10-13 23:35:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:35:47,833 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 75 [2020-10-13 23:35:47,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:47,834 INFO L225 Difference]: With dead ends: 137 [2020-10-13 23:35:47,834 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 23:35:47,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:35:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 23:35:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 23:35:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:35:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-13 23:35:47,840 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 75 [2020-10-13 23:35:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:47,840 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-13 23:35:47,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 23:35:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-13 23:35:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 23:35:47,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:47,841 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:47,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:35:47,841 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:47,842 INFO L82 PathProgramCache]: Analyzing trace with hash -2065851716, now seen corresponding path program 21 times [2020-10-13 23:35:47,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:47,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115172956] [2020-10-13 23:35:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:47,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:52,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:52,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 23:35:52,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:35:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:35:52,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:52,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 23:35:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 23:35:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:35:52,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:53,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:53,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:53,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:53,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:53,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:53,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-13 23:35:53,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115172956] [2020-10-13 23:35:53,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:53,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 23:35:53,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621384885] [2020-10-13 23:35:53,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 23:35:53,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:53,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 23:35:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:35:53,226 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 25 states. [2020-10-13 23:35:53,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:53,480 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2020-10-13 23:35:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:35:53,480 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 78 [2020-10-13 23:35:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:53,482 INFO L225 Difference]: With dead ends: 142 [2020-10-13 23:35:53,482 INFO L226 Difference]: Without dead ends: 87 [2020-10-13 23:35:53,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:35:53,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-13 23:35:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-10-13 23:35:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 23:35:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-10-13 23:35:53,487 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 78 [2020-10-13 23:35:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:53,488 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-10-13 23:35:53,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 23:35:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-10-13 23:35:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 23:35:53,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:53,489 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:53,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:35:53,489 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:53,489 INFO L82 PathProgramCache]: Analyzing trace with hash -2097923046, now seen corresponding path program 22 times [2020-10-13 23:35:53,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:53,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565500735] [2020-10-13 23:35:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:53,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 23:35:58,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:35:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 23:35:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:58,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 23:35:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:35:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 23:35:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:58,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:58,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:58,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:58,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:58,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:58,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:58,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:58,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:58,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-13 23:35:58,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565500735] [2020-10-13 23:35:58,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:58,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 23:35:58,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032948038] [2020-10-13 23:35:58,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 23:35:58,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:58,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 23:35:58,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:35:58,892 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 26 states. [2020-10-13 23:35:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:59,164 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-13 23:35:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 23:35:59,165 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 81 [2020-10-13 23:35:59,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:59,166 INFO L225 Difference]: With dead ends: 147 [2020-10-13 23:35:59,166 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 23:35:59,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:35:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 23:35:59,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 23:35:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:35:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-13 23:35:59,171 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 81 [2020-10-13 23:35:59,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:59,172 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-13 23:35:59,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 23:35:59,172 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-13 23:35:59,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 23:35:59,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:59,173 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:59,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:35:59,173 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:59,173 INFO L82 PathProgramCache]: Analyzing trace with hash 322516920, now seen corresponding path program 23 times [2020-10-13 23:35:59,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:59,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081558635] [2020-10-13 23:35:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:59,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:59,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:01,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:04,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:04,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 23:36:04,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:04,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 23:36:04,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:04,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 23:36:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:36:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 23:36:04,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:04,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:04,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:04,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:04,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:04,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:04,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-13 23:36:04,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081558635] [2020-10-13 23:36:04,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:04,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 23:36:04,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405621906] [2020-10-13 23:36:04,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 23:36:04,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:04,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 23:36:04,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:36:04,639 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 27 states. [2020-10-13 23:36:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:04,850 INFO L93 Difference]: Finished difference Result 152 states and 157 transitions. [2020-10-13 23:36:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 23:36:04,851 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 84 [2020-10-13 23:36:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:04,852 INFO L225 Difference]: With dead ends: 152 [2020-10-13 23:36:04,852 INFO L226 Difference]: Without dead ends: 93 [2020-10-13 23:36:04,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:36:04,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-13 23:36:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-13 23:36:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 23:36:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-10-13 23:36:04,857 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 84 [2020-10-13 23:36:04,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:04,857 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-10-13 23:36:04,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 23:36:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-10-13 23:36:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 23:36:04,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:04,858 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:04,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:36:04,858 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:04,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:04,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1250086378, now seen corresponding path program 24 times [2020-10-13 23:36:04,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:04,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050226773] [2020-10-13 23:36:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:04,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:09,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:09,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 23:36:09,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:36:09,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 23:36:09,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:09,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 23:36:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:36:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 23:36:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:10,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:10,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:10,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:10,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:10,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:10,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2020-10-13 23:36:10,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050226773] [2020-10-13 23:36:10,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:10,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 23:36:10,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78819739] [2020-10-13 23:36:10,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 23:36:10,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:10,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 23:36:10,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:36:10,384 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 28 states. [2020-10-13 23:36:10,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:10,671 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2020-10-13 23:36:10,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 23:36:10,671 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 87 [2020-10-13 23:36:10,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:10,672 INFO L225 Difference]: With dead ends: 157 [2020-10-13 23:36:10,673 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:36:10,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:36:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:36:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 23:36:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:36:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-13 23:36:10,678 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 87 [2020-10-13 23:36:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:10,678 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-13 23:36:10,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 23:36:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-13 23:36:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 23:36:10,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:10,679 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:10,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:36:10,679 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:10,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2095384908, now seen corresponding path program 25 times [2020-10-13 23:36:10,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:10,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150823134] [2020-10-13 23:36:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:13,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:17,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:17,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 23:36:17,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:17,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6540 [2020-10-13 23:36:17,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:17,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 23:36:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 23:36:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 23:36:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:17,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:17,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:17,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:17,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:17,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:17,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:17,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:17,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:17,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-13 23:36:17,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150823134] [2020-10-13 23:36:17,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:17,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:36:17,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275467595] [2020-10-13 23:36:17,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:36:17,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:17,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:36:17,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:36:17,701 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 29 states. [2020-10-13 23:36:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:17,969 INFO L93 Difference]: Finished difference Result 162 states and 167 transitions. [2020-10-13 23:36:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 23:36:17,970 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 90 [2020-10-13 23:36:17,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:17,971 INFO L225 Difference]: With dead ends: 162 [2020-10-13 23:36:17,971 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 23:36:17,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:36:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 23:36:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-13 23:36:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 23:36:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-10-13 23:36:17,976 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 90 [2020-10-13 23:36:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:17,976 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-10-13 23:36:17,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:36:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-10-13 23:36:17,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 23:36:17,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:17,977 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:17,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:36:17,978 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:17,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1620194798, now seen corresponding path program 26 times [2020-10-13 23:36:17,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:17,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331423362] [2020-10-13 23:36:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:18,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:23,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:23,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 23:36:23,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:36:23,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 23:36:23,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:23,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:23,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:36:23,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:36:23,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 23:36:23,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:23,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:23,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:23,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:23,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:23,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:23,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-10-13 23:36:23,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331423362] [2020-10-13 23:36:23,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:23,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 23:36:23,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477187640] [2020-10-13 23:36:23,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 23:36:23,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:23,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 23:36:23,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:36:23,576 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 30 states. [2020-10-13 23:36:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:23,819 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2020-10-13 23:36:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 23:36:23,820 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 93 [2020-10-13 23:36:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:23,821 INFO L225 Difference]: With dead ends: 167 [2020-10-13 23:36:23,821 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 23:36:23,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:36:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 23:36:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 23:36:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:36:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-13 23:36:23,827 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 93 [2020-10-13 23:36:23,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:23,827 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-13 23:36:23,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 23:36:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-13 23:36:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:36:23,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:23,830 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:23,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:36:23,830 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:23,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:23,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1289869232, now seen corresponding path program 27 times [2020-10-13 23:36:23,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:23,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398361173] [2020-10-13 23:36:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:23,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:30,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:30,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 23:36:30,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6409 [2020-10-13 23:36:30,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:30,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 23:36:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 23:36:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 23:36:30,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:30,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:30,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:30,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:30,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:30,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:36:30,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:30,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:30,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:30,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:36:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-10-13 23:36:30,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398361173] [2020-10-13 23:36:30,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:30,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 23:36:30,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881106432] [2020-10-13 23:36:30,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 23:36:30,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:30,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 23:36:30,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:36:30,829 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 31 states. [2020-10-13 23:36:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:31,183 INFO L93 Difference]: Finished difference Result 172 states and 177 transitions. [2020-10-13 23:36:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 23:36:31,185 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 96 [2020-10-13 23:36:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:31,186 INFO L225 Difference]: With dead ends: 172 [2020-10-13 23:36:31,186 INFO L226 Difference]: Without dead ends: 105 [2020-10-13 23:36:31,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:36:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-13 23:36:31,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2020-10-13 23:36:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-13 23:36:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2020-10-13 23:36:31,196 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 96 [2020-10-13 23:36:31,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:31,197 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2020-10-13 23:36:31,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 23:36:31,197 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2020-10-13 23:36:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 23:36:31,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:31,198 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:31,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:36:31,199 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:31,199 INFO L82 PathProgramCache]: Analyzing trace with hash -337312754, now seen corresponding path program 28 times [2020-10-13 23:36:31,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:31,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161856684] [2020-10-13 23:36:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:31,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:36,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:36,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 23:36:36,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:36:36,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 23:36:36,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:36,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 23:36:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:36:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:36:36,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:36,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:36,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:36,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:36,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:36,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:36:36,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:36,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:36,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:36:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-13 23:36:36,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161856684] [2020-10-13 23:36:36,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:36,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 23:36:36,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245014676] [2020-10-13 23:36:36,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 23:36:36,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:36,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 23:36:36,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:36:36,827 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 32 states. [2020-10-13 23:36:37,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:37,142 INFO L93 Difference]: Finished difference Result 177 states and 182 transitions. [2020-10-13 23:36:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 23:36:37,143 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 99 [2020-10-13 23:36:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:37,144 INFO L225 Difference]: With dead ends: 177 [2020-10-13 23:36:37,144 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:36:37,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:36:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:36:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 23:36:37,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:36:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-13 23:36:37,151 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 99 [2020-10-13 23:36:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:37,152 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-13 23:36:37,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 23:36:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-13 23:36:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 23:36:37,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:37,153 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:37,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:36:37,153 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:37,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:37,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1902959276, now seen corresponding path program 29 times [2020-10-13 23:36:37,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:37,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954034061] [2020-10-13 23:36:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:37,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:39,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:51,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:51,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:36:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13873 [2020-10-13 23:36:51,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:51,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 23:36:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 23:36:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 23:36:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:51,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:51,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:51,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:51,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:51,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:51,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:51,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:51,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:51,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:36:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2020-10-13 23:36:51,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954034061] [2020-10-13 23:36:51,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:51,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 23:36:51,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825438164] [2020-10-13 23:36:51,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 23:36:51,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:51,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 23:36:51,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:36:51,697 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 33 states. [2020-10-13 23:36:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:52,048 INFO L93 Difference]: Finished difference Result 182 states and 187 transitions. [2020-10-13 23:36:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 23:36:52,049 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 102 [2020-10-13 23:36:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:52,050 INFO L225 Difference]: With dead ends: 182 [2020-10-13 23:36:52,050 INFO L226 Difference]: Without dead ends: 111 [2020-10-13 23:36:52,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:36:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-13 23:36:52,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2020-10-13 23:36:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 23:36:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-10-13 23:36:52,061 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 102 [2020-10-13 23:36:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:52,061 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-10-13 23:36:52,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 23:36:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-10-13 23:36:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 23:36:52,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:52,067 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:52,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:36:52,067 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:52,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:52,068 INFO L82 PathProgramCache]: Analyzing trace with hash -830349302, now seen corresponding path program 30 times [2020-10-13 23:36:52,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:52,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964629213] [2020-10-13 23:36:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:52,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:52,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:05,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:05,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 23:37:05,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13420 [2020-10-13 23:37:05,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:05,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 23:37:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 23:37:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:37:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:06,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:06,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:06,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:06,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:06,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:06,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2020-10-13 23:37:06,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964629213] [2020-10-13 23:37:06,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:06,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-13 23:37:06,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288513841] [2020-10-13 23:37:06,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-13 23:37:06,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:06,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-13 23:37:06,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:37:06,129 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 34 states. [2020-10-13 23:37:06,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:06,431 INFO L93 Difference]: Finished difference Result 187 states and 192 transitions. [2020-10-13 23:37:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 23:37:06,432 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 105 [2020-10-13 23:37:06,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:06,434 INFO L225 Difference]: With dead ends: 187 [2020-10-13 23:37:06,434 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 23:37:06,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:37:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 23:37:06,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 23:37:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 23:37:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-13 23:37:06,450 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 105 [2020-10-13 23:37:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:06,450 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-13 23:37:06,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-13 23:37:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-13 23:37:06,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 23:37:06,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:06,452 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:06,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:37:06,453 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:06,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:06,453 INFO L82 PathProgramCache]: Analyzing trace with hash 974847912, now seen corresponding path program 31 times [2020-10-13 23:37:06,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:06,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773331133] [2020-10-13 23:37:06,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:06,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:11,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:11,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 23:37:11,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:37:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 23:37:11,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:11,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 23:37:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 23:37:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 23:37:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:12,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:12,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:12,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:12,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:12,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:12,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:12,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:12,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2020-10-13 23:37:12,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773331133] [2020-10-13 23:37:12,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:12,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-13 23:37:12,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888732040] [2020-10-13 23:37:12,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-13 23:37:12,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:12,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-13 23:37:12,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:37:12,172 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 35 states. [2020-10-13 23:37:12,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:12,475 INFO L93 Difference]: Finished difference Result 192 states and 197 transitions. [2020-10-13 23:37:12,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 23:37:12,475 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 108 [2020-10-13 23:37:12,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:12,477 INFO L225 Difference]: With dead ends: 192 [2020-10-13 23:37:12,477 INFO L226 Difference]: Without dead ends: 117 [2020-10-13 23:37:12,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:37:12,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-13 23:37:12,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-10-13 23:37:12,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-13 23:37:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2020-10-13 23:37:12,484 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 108 [2020-10-13 23:37:12,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:12,484 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2020-10-13 23:37:12,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-13 23:37:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2020-10-13 23:37:12,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 23:37:12,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:12,486 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:12,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:37:12,486 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:12,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1016898042, now seen corresponding path program 32 times [2020-10-13 23:37:12,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:12,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252839106] [2020-10-13 23:37:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:17,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:28,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:28,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 23:37:28,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:28,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16206 [2020-10-13 23:37:28,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:28,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 23:37:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 23:37:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 23:37:28,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:29,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:29,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:29,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:29,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:29,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2020-10-13 23:37:29,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252839106] [2020-10-13 23:37:29,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:29,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-13 23:37:29,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805781961] [2020-10-13 23:37:29,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-13 23:37:29,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:29,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-13 23:37:29,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:37:29,453 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 36 states. [2020-10-13 23:37:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:29,827 INFO L93 Difference]: Finished difference Result 197 states and 202 transitions. [2020-10-13 23:37:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 23:37:29,828 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 111 [2020-10-13 23:37:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:29,829 INFO L225 Difference]: With dead ends: 197 [2020-10-13 23:37:29,829 INFO L226 Difference]: Without dead ends: 120 [2020-10-13 23:37:29,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:37:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-13 23:37:29,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-13 23:37:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-13 23:37:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-10-13 23:37:29,836 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 111 [2020-10-13 23:37:29,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:29,836 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-10-13 23:37:29,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-13 23:37:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-10-13 23:37:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 23:37:29,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:29,838 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:29,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:37:29,838 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:29,839 INFO L82 PathProgramCache]: Analyzing trace with hash -120895836, now seen corresponding path program 33 times [2020-10-13 23:37:29,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:29,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825044650] [2020-10-13 23:37:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:29,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:30,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:34,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:34,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 23:37:34,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:37:34,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 23:37:34,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:34,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:34,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 23:37:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 23:37:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 23:37:34,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:35,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:35,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:35,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:35,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:35,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:35,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:35,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:35,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:35,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2020-10-13 23:37:35,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825044650] [2020-10-13 23:37:35,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:35,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-13 23:37:35,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235989281] [2020-10-13 23:37:35,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-13 23:37:35,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:35,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-13 23:37:35,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:37:35,685 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 37 states. [2020-10-13 23:37:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:36,072 INFO L93 Difference]: Finished difference Result 202 states and 207 transitions. [2020-10-13 23:37:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 23:37:36,072 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 114 [2020-10-13 23:37:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:36,073 INFO L225 Difference]: With dead ends: 202 [2020-10-13 23:37:36,073 INFO L226 Difference]: Without dead ends: 123 [2020-10-13 23:37:36,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:37:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-13 23:37:36,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2020-10-13 23:37:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-13 23:37:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2020-10-13 23:37:36,079 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 114 [2020-10-13 23:37:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:36,080 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2020-10-13 23:37:36,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-13 23:37:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2020-10-13 23:37:36,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 23:37:36,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:36,083 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:36,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:37:36,084 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:36,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1328053762, now seen corresponding path program 34 times [2020-10-13 23:37:36,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:36,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609245910] [2020-10-13 23:37:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:41,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:41,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 23:37:41,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:37:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 23:37:41,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:41,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 23:37:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 23:37:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 23:37:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:41,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:41,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:41,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:41,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:41,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:41,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:41,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:41,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:41,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2020-10-13 23:37:41,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609245910] [2020-10-13 23:37:41,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:41,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-13 23:37:41,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231393252] [2020-10-13 23:37:41,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-13 23:37:41,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:41,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-13 23:37:41,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:37:41,948 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 38 states. [2020-10-13 23:37:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:42,311 INFO L93 Difference]: Finished difference Result 207 states and 212 transitions. [2020-10-13 23:37:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 23:37:42,311 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 117 [2020-10-13 23:37:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:42,313 INFO L225 Difference]: With dead ends: 207 [2020-10-13 23:37:42,313 INFO L226 Difference]: Without dead ends: 126 [2020-10-13 23:37:42,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:37:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-13 23:37:42,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-13 23:37:42,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 23:37:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-10-13 23:37:42,319 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 117 [2020-10-13 23:37:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:42,320 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-10-13 23:37:42,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-13 23:37:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-10-13 23:37:42,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 23:37:42,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:42,321 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:42,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:37:42,321 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:42,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash -941838432, now seen corresponding path program 35 times [2020-10-13 23:37:42,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:42,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708492544] [2020-10-13 23:37:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:42,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:47,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:47,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 23:37:47,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:37:47,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:37:47,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:47,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-13 23:37:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 23:37:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 23:37:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:48,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:48,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:48,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:48,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:48,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:48,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:48,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2020-10-13 23:37:48,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708492544] [2020-10-13 23:37:48,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:48,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-13 23:37:48,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022292893] [2020-10-13 23:37:48,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-13 23:37:48,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:48,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-13 23:37:48,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:37:48,237 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 39 states. [2020-10-13 23:37:48,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:48,619 INFO L93 Difference]: Finished difference Result 212 states and 217 transitions. [2020-10-13 23:37:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 23:37:48,620 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 120 [2020-10-13 23:37:48,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:48,620 INFO L225 Difference]: With dead ends: 212 [2020-10-13 23:37:48,621 INFO L226 Difference]: Without dead ends: 129 [2020-10-13 23:37:48,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:37:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-13 23:37:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2020-10-13 23:37:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-13 23:37:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-10-13 23:37:48,626 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 120 [2020-10-13 23:37:48,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:48,627 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-10-13 23:37:48,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-13 23:37:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-10-13 23:37:48,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 23:37:48,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:48,628 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:48,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:37:48,628 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:48,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:48,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1091551234, now seen corresponding path program 36 times [2020-10-13 23:37:48,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:48,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336902699] [2020-10-13 23:37:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:48,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:53,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:53,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 23:37:53,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:37:53,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 23:37:53,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:53,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 23:37:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 23:37:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 23:37:53,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:54,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:54,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:54,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:54,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:54,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:54,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:54,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:54,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2020-10-13 23:37:54,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336902699] [2020-10-13 23:37:54,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:54,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-13 23:37:54,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706757439] [2020-10-13 23:37:54,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-13 23:37:54,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:54,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-13 23:37:54,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:37:54,623 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 40 states. [2020-10-13 23:37:55,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:55,032 INFO L93 Difference]: Finished difference Result 217 states and 222 transitions. [2020-10-13 23:37:55,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 23:37:55,033 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 123 [2020-10-13 23:37:55,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:55,035 INFO L225 Difference]: With dead ends: 217 [2020-10-13 23:37:55,035 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 23:37:55,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:37:55,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 23:37:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-13 23:37:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-13 23:37:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2020-10-13 23:37:55,041 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 123 [2020-10-13 23:37:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:55,041 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2020-10-13 23:37:55,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-13 23:37:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2020-10-13 23:37:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 23:37:55,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:55,042 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:55,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:37:55,043 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:55,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1244543644, now seen corresponding path program 37 times [2020-10-13 23:37:55,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:55,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593845301] [2020-10-13 23:37:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:55,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:56,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:00,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:00,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 23:38:00,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:38:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 23:38:00,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:00,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-13 23:38:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 23:38:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 23:38:00,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:01,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:01,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:01,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:01,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:38:01,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:01,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 23:38:01,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593845301] [2020-10-13 23:38:01,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:01,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-13 23:38:01,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315797420] [2020-10-13 23:38:01,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-13 23:38:01,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:01,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-13 23:38:01,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 23:38:01,062 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 41 states. [2020-10-13 23:38:01,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:01,377 INFO L93 Difference]: Finished difference Result 222 states and 227 transitions. [2020-10-13 23:38:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 23:38:01,377 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 126 [2020-10-13 23:38:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:01,379 INFO L225 Difference]: With dead ends: 222 [2020-10-13 23:38:01,379 INFO L226 Difference]: Without dead ends: 135 [2020-10-13 23:38:01,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 23:38:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-13 23:38:01,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2020-10-13 23:38:01,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-13 23:38:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2020-10-13 23:38:01,386 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 126 [2020-10-13 23:38:01,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:01,386 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2020-10-13 23:38:01,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-13 23:38:01,386 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2020-10-13 23:38:01,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 23:38:01,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:01,387 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:01,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:38:01,388 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:01,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:01,388 INFO L82 PathProgramCache]: Analyzing trace with hash -396778502, now seen corresponding path program 38 times [2020-10-13 23:38:01,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:01,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259838663] [2020-10-13 23:38:01,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:01,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:06,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:06,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 23:38:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:38:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-13 23:38:06,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:06,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-13 23:38:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 23:38:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 23:38:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:07,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:07,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:07,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:07,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:07,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:38:07,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:07,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2020-10-13 23:38:07,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259838663] [2020-10-13 23:38:07,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:07,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-13 23:38:07,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592678583] [2020-10-13 23:38:07,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-13 23:38:07,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:07,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-13 23:38:07,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 23:38:07,523 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand 42 states. [2020-10-13 23:38:07,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:07,984 INFO L93 Difference]: Finished difference Result 227 states and 232 transitions. [2020-10-13 23:38:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 23:38:07,985 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 129 [2020-10-13 23:38:07,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:07,986 INFO L225 Difference]: With dead ends: 227 [2020-10-13 23:38:07,986 INFO L226 Difference]: Without dead ends: 138 [2020-10-13 23:38:07,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 23:38:07,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-13 23:38:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-13 23:38:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-13 23:38:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2020-10-13 23:38:07,994 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 129 [2020-10-13 23:38:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:07,994 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2020-10-13 23:38:07,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-13 23:38:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2020-10-13 23:38:07,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 23:38:07,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:07,996 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:07,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:38:07,996 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:07,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:07,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1797187480, now seen corresponding path program 39 times [2020-10-13 23:38:07,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:07,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113490754] [2020-10-13 23:38:07,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:08,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:09,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:13,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:13,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 23:38:13,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:38:13,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 23:38:13,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:13,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:13,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-13 23:38:13,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 23:38:13,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 23:38:13,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0