/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 SingleStatement --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:29:18,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:29:18,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:29:18,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:29:18,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:29:18,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:29:18,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:29:18,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:29:18,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:29:18,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:29:18,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:29:18,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:29:18,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:29:18,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:29:18,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:29:18,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:29:18,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:29:18,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:29:18,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:29:18,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:29:19,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:29:19,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:29:19,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:29:19,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:29:19,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:29:19,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:29:19,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:29:19,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:29:19,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:29:19,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:29:19,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:29:19,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:29:19,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:29:19,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:29:19,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:29:19,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:29:19,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:29:19,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:29:19,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:29:19,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:29:19,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:29:19,026 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 [2020-09-24 19:29:19,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:29:19,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:29:19,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:29:19,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:29:19,091 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:29:19,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:29:19,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:29:19,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:29:19,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:29:19,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:29:19,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:29:19,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:29:19,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:29:19,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:29:19,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:29:19,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:29:19,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:29:19,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:29:19,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:29:19,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:29:19,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:29:19,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:29:19,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:29:19,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:29:19,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:29:19,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:29:19,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:29:19,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:29:19,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:29:19,098 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 -> SingleStatement 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:29:19,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:29:19,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:29:19,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:29:19,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:29:19,600 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:29:19,601 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-24 19:29:19,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ad964916/720617a1464d452f9c54bc45d44179bc/FLAGae2323f69 [2020-09-24 19:29:20,373 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:29:20,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-24 19:29:20,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ad964916/720617a1464d452f9c54bc45d44179bc/FLAGae2323f69 [2020-09-24 19:29:20,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ad964916/720617a1464d452f9c54bc45d44179bc [2020-09-24 19:29:20,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:29:20,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:29:20,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:20,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:29:20,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:29:20,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:20" (1/1) ... [2020-09-24 19:29:20,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4839a71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:20, skipping insertion in model container [2020-09-24 19:29:20,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:20" (1/1) ... [2020-09-24 19:29:20,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:29:20,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:29:21,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:21,204 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:29:21,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:21,487 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:29:21,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:21 WrapperNode [2020-09-24 19:29:21,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:21,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:29:21,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:29:21,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:29:21,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:21" (1/1) ... [2020-09-24 19:29:21,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:21" (1/1) ... [2020-09-24 19:29:21,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:21" (1/1) ... [2020-09-24 19:29:21,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:21" (1/1) ... [2020-09-24 19:29:21,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:21" (1/1) ... [2020-09-24 19:29:21,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:21" (1/1) ... [2020-09-24 19:29:21,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:21" (1/1) ... [2020-09-24 19:29:21,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:29:21,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:29:21,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:29:21,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:29:21,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:29:21,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:29:21,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:29:21,741 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:29:21,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:29:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:29:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:29:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:29:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:29:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:29:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:29:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:29:23,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:29:23,373 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:29:23,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:29:23 BoogieIcfgContainer [2020-09-24 19:29:23,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:29:23,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:29:23,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:29:23,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:29:23,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:29:20" (1/3) ... [2020-09-24 19:29:23,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d92ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:29:23, skipping insertion in model container [2020-09-24 19:29:23,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:21" (2/3) ... [2020-09-24 19:29:23,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d92ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:29:23, skipping insertion in model container [2020-09-24 19:29:23,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:29:23" (3/3) ... [2020-09-24 19:29:23,407 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-24 19:29:23,419 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:29:23,434 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:29:23,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:29:23,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:29:23,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:29:23,486 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:29:23,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:29:23,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:29:23,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:29:23,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:29:23,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:29:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:29:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 19:29:23,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:23,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:23,536 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:23,544 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-24 19:29:23,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:23,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622445182] [2020-09-24 19:29:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:23,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:24,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 19:29:24,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-09-24 19:29:24,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:29:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 19:29:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:29:24,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:24,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:24,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:24,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:29:24,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:29:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:24,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622445182] [2020-09-24 19:29:24,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:24,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:29:24,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667728665] [2020-09-24 19:29:24,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:29:24,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:24,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:29:24,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:29:24,813 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 19:29:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:26,939 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-24 19:29:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:29:26,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-24 19:29:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:26,970 INFO L225 Difference]: With dead ends: 1089 [2020-09-24 19:29:26,970 INFO L226 Difference]: Without dead ends: 575 [2020-09-24 19:29:26,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:27,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-24 19:29:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-24 19:29:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-24 19:29:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-24 19:29:27,088 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 53 [2020-09-24 19:29:27,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:27,089 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-24 19:29:27,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:29:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-24 19:29:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 19:29:27,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:27,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:27,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:29:27,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:27,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:27,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-24 19:29:27,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:27,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474189151] [2020-09-24 19:29:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:27,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:27,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:27,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:28,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:28,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-24 19:29:28,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:29:28,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 19:29:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 19:29:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:28,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:28,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:28,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:28,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:28,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:28,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:28,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:28,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:28,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:28,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:29:28,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 19:29:28,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:28,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474189151] [2020-09-24 19:29:28,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:28,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:28,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40795864] [2020-09-24 19:29:28,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:28,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:28,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:28,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:28,426 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-24 19:29:30,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:30,166 INFO L93 Difference]: Finished difference Result 861 states and 1069 transitions. [2020-09-24 19:29:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:30,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-24 19:29:30,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:30,173 INFO L225 Difference]: With dead ends: 861 [2020-09-24 19:29:30,173 INFO L226 Difference]: Without dead ends: 859 [2020-09-24 19:29:30,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-24 19:29:30,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 697. [2020-09-24 19:29:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 19:29:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 874 transitions. [2020-09-24 19:29:30,219 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 874 transitions. Word has length 132 [2020-09-24 19:29:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:30,220 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 874 transitions. [2020-09-24 19:29:30,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 874 transitions. [2020-09-24 19:29:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 19:29:30,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:30,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:30,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:29:30,225 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:30,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1083996953, now seen corresponding path program 1 times [2020-09-24 19:29:30,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:30,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023435850] [2020-09-24 19:29:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:31,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:31,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 19:29:31,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:29:31,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:29:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:29:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:31,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:31,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:31,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:31,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:31,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:31,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:29:31,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:29:31,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:31,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:31,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:29:31,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 19:29:31,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:29:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:31,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023435850] [2020-09-24 19:29:31,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:31,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:29:31,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455010411] [2020-09-24 19:29:31,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:29:31,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:31,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:29:31,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:29:31,687 INFO L87 Difference]: Start difference. First operand 697 states and 874 transitions. Second operand 8 states. [2020-09-24 19:29:33,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:33,658 INFO L93 Difference]: Finished difference Result 1705 states and 2186 transitions. [2020-09-24 19:29:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:33,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-09-24 19:29:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:33,665 INFO L225 Difference]: With dead ends: 1705 [2020-09-24 19:29:33,666 INFO L226 Difference]: Without dead ends: 1023 [2020-09-24 19:29:33,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:33,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-09-24 19:29:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1009. [2020-09-24 19:29:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-09-24 19:29:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1235 transitions. [2020-09-24 19:29:33,717 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1235 transitions. Word has length 136 [2020-09-24 19:29:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:33,719 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1235 transitions. [2020-09-24 19:29:33,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:29:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1235 transitions. [2020-09-24 19:29:33,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 19:29:33,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:33,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:33,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:29:33,731 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:33,731 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-24 19:29:33,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:33,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931470155] [2020-09-24 19:29:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 19:29:34,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:34,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 19:29:34,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:34,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 19:29:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 19:29:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 19:29:34,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:34,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:34,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:34,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:34,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:34,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:35,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:35,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:35,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 19:29:35,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 19:29:35,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:35,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931470155] [2020-09-24 19:29:35,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:35,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:35,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277210838] [2020-09-24 19:29:35,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:35,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:35,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:35,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:35,087 INFO L87 Difference]: Start difference. First operand 1009 states and 1235 transitions. Second operand 5 states. [2020-09-24 19:29:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:37,008 INFO L93 Difference]: Finished difference Result 2343 states and 2933 transitions. [2020-09-24 19:29:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:37,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-24 19:29:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:37,017 INFO L225 Difference]: With dead ends: 2343 [2020-09-24 19:29:37,018 INFO L226 Difference]: Without dead ends: 1349 [2020-09-24 19:29:37,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:37,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-09-24 19:29:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1317. [2020-09-24 19:29:37,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-09-24 19:29:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1550 transitions. [2020-09-24 19:29:37,076 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1550 transitions. Word has length 142 [2020-09-24 19:29:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:37,077 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1550 transitions. [2020-09-24 19:29:37,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1550 transitions. [2020-09-24 19:29:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 19:29:37,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:37,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:37,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:29:37,086 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:37,087 INFO L82 PathProgramCache]: Analyzing trace with hash -367593207, now seen corresponding path program 1 times [2020-09-24 19:29:37,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:37,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166670012] [2020-09-24 19:29:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-24 19:29:38,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:38,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 19:29:38,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:29:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 19:29:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:38,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:38,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:38,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:38,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:29:38,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:38,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:29:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 19:29:38,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-24 19:29:38,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:29:38,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:38,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166670012] [2020-09-24 19:29:38,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:38,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:38,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055002879] [2020-09-24 19:29:38,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:38,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:38,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:38,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:38,771 INFO L87 Difference]: Start difference. First operand 1317 states and 1550 transitions. Second operand 7 states. [2020-09-24 19:29:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:41,044 INFO L93 Difference]: Finished difference Result 2977 states and 3594 transitions. [2020-09-24 19:29:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:41,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-09-24 19:29:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:41,057 INFO L225 Difference]: With dead ends: 2977 [2020-09-24 19:29:41,057 INFO L226 Difference]: Without dead ends: 1675 [2020-09-24 19:29:41,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2020-09-24 19:29:41,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1485. [2020-09-24 19:29:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-09-24 19:29:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1731 transitions. [2020-09-24 19:29:41,122 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1731 transitions. Word has length 230 [2020-09-24 19:29:41,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:41,122 INFO L479 AbstractCegarLoop]: Abstraction has 1485 states and 1731 transitions. [2020-09-24 19:29:41,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1731 transitions. [2020-09-24 19:29:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 19:29:41,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:41,129 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:41,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:29:41,129 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:41,130 INFO L82 PathProgramCache]: Analyzing trace with hash -802430756, now seen corresponding path program 1 times [2020-09-24 19:29:41,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:41,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624240904] [2020-09-24 19:29:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 19:29:42,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:29:42,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 19:29:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 19:29:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:42,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:42,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:42,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:42,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:42,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:42,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:42,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 19:29:42,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:29:42,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:29:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 19:29:42,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:42,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 19:29:42,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:29:42,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:42,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624240904] [2020-09-24 19:29:42,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:42,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:42,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267923071] [2020-09-24 19:29:42,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:42,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:42,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:42,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:42,720 INFO L87 Difference]: Start difference. First operand 1485 states and 1731 transitions. Second operand 7 states. [2020-09-24 19:29:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:45,748 INFO L93 Difference]: Finished difference Result 4141 states and 4883 transitions. [2020-09-24 19:29:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:45,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-09-24 19:29:45,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:45,763 INFO L225 Difference]: With dead ends: 4141 [2020-09-24 19:29:45,763 INFO L226 Difference]: Without dead ends: 2671 [2020-09-24 19:29:45,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:45,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2020-09-24 19:29:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 2306. [2020-09-24 19:29:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2306 states. [2020-09-24 19:29:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 2714 transitions. [2020-09-24 19:29:45,847 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 2714 transitions. Word has length 237 [2020-09-24 19:29:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:45,847 INFO L479 AbstractCegarLoop]: Abstraction has 2306 states and 2714 transitions. [2020-09-24 19:29:45,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 2714 transitions. [2020-09-24 19:29:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-24 19:29:45,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:45,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:45,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:29:45,854 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:45,854 INFO L82 PathProgramCache]: Analyzing trace with hash 911450850, now seen corresponding path program 1 times [2020-09-24 19:29:45,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:45,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842479464] [2020-09-24 19:29:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:46,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-24 19:29:46,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-09-24 19:29:46,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:29:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-09-24 19:29:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 19:29:46,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:47,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:47,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:47,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:47,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:47,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:47,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:47,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:47,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:47,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:47,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:47,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:47,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:47,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:29:47,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:47,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:29:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:47,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:47,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 19:29:47,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-24 19:29:47,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:29:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 19:29:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 19:29:47,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842479464] [2020-09-24 19:29:47,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:47,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:29:47,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389657893] [2020-09-24 19:29:47,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:29:47,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:47,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:29:47,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:47,390 INFO L87 Difference]: Start difference. First operand 2306 states and 2714 transitions. Second operand 6 states. [2020-09-24 19:29:50,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:50,005 INFO L93 Difference]: Finished difference Result 5885 states and 7106 transitions. [2020-09-24 19:29:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:29:50,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 247 [2020-09-24 19:29:50,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:50,028 INFO L225 Difference]: With dead ends: 5885 [2020-09-24 19:29:50,029 INFO L226 Difference]: Without dead ends: 3594 [2020-09-24 19:29:50,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:29:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2020-09-24 19:29:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 2769. [2020-09-24 19:29:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2769 states. [2020-09-24 19:29:50,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 3306 transitions. [2020-09-24 19:29:50,116 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 3306 transitions. Word has length 247 [2020-09-24 19:29:50,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:50,117 INFO L479 AbstractCegarLoop]: Abstraction has 2769 states and 3306 transitions. [2020-09-24 19:29:50,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:29:50,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 3306 transitions. [2020-09-24 19:29:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-24 19:29:50,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:50,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:50,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:29:50,126 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:50,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2142390301, now seen corresponding path program 1 times [2020-09-24 19:29:50,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:50,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503677984] [2020-09-24 19:29:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:50,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-24 19:29:51,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1326 [2020-09-24 19:29:51,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 19:29:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-24 19:29:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:51,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:51,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:51,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:51,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:51,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 19:29:51,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:51,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:51,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:29:51,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:51,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:29:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:52,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:52,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-24 19:29:52,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:52,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-24 19:29:52,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-24 19:29:52,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:52,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503677984] [2020-09-24 19:29:52,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:52,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:29:52,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458337833] [2020-09-24 19:29:52,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:29:52,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:52,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:29:52,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:29:52,472 INFO L87 Difference]: Start difference. First operand 2769 states and 3306 transitions. Second operand 8 states. [2020-09-24 19:29:54,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:54,927 INFO L93 Difference]: Finished difference Result 6025 states and 7361 transitions. [2020-09-24 19:29:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:54,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 291 [2020-09-24 19:29:54,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:54,942 INFO L225 Difference]: With dead ends: 6025 [2020-09-24 19:29:54,942 INFO L226 Difference]: Without dead ends: 3271 [2020-09-24 19:29:54,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:29:54,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2020-09-24 19:29:55,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3233. [2020-09-24 19:29:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3233 states. [2020-09-24 19:29:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 3970 transitions. [2020-09-24 19:29:55,029 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 3970 transitions. Word has length 291 [2020-09-24 19:29:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:55,030 INFO L479 AbstractCegarLoop]: Abstraction has 3233 states and 3970 transitions. [2020-09-24 19:29:55,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:29:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 3970 transitions. [2020-09-24 19:29:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-24 19:29:55,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:55,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:55,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:29:55,040 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:55,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:55,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1434328475, now seen corresponding path program 1 times [2020-09-24 19:29:55,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:55,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509544520] [2020-09-24 19:29:55,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:55,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:56,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:56,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-09-24 19:29:56,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:56,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:29:56,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:29:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-24 19:29:56,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:56,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:56,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:56,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:56,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:56,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:56,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:56,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:56,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:56,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:56,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:56,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:29:56,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:29:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:56,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:29:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:56,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:56,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 19:29:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-24 19:29:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 19:29:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:56,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509544520] [2020-09-24 19:29:56,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:56,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:56,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96435646] [2020-09-24 19:29:56,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:56,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:56,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:56,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:56,854 INFO L87 Difference]: Start difference. First operand 3233 states and 3970 transitions. Second operand 7 states. [2020-09-24 19:29:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:59,630 INFO L93 Difference]: Finished difference Result 7963 states and 9804 transitions. [2020-09-24 19:29:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:59,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-09-24 19:29:59,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:59,652 INFO L225 Difference]: With dead ends: 7963 [2020-09-24 19:29:59,652 INFO L226 Difference]: Without dead ends: 3613 [2020-09-24 19:29:59,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3613 states. [2020-09-24 19:29:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3613 to 2859. [2020-09-24 19:29:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2859 states. [2020-09-24 19:29:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3388 transitions. [2020-09-24 19:29:59,758 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3388 transitions. Word has length 293 [2020-09-24 19:29:59,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:59,758 INFO L479 AbstractCegarLoop]: Abstraction has 2859 states and 3388 transitions. [2020-09-24 19:29:59,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3388 transitions. [2020-09-24 19:29:59,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-09-24 19:29:59,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:59,772 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:59,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:29:59,773 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:59,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:59,773 INFO L82 PathProgramCache]: Analyzing trace with hash -28460639, now seen corresponding path program 1 times [2020-09-24 19:29:59,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:59,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382744522] [2020-09-24 19:29:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:59,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:59,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:00,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:01,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:01,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-09-24 19:30:01,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1374 [2020-09-24 19:30:01,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-24 19:30:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-24 19:30:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:01,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:01,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:01,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:01,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:01,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:01,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:01,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:01,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:01,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:01,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:30:01,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:01,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 19:30:01,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:01,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:01,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:01,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 19:30:01,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:01,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:30:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:01,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:01,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:01,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-24 19:30:01,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-24 19:30:01,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:01,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-24 19:30:01,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:02,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382744522] [2020-09-24 19:30:02,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:02,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:02,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022527556] [2020-09-24 19:30:02,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:02,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:02,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:02,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:02,058 INFO L87 Difference]: Start difference. First operand 2859 states and 3388 transitions. Second operand 7 states. [2020-09-24 19:30:04,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:04,726 INFO L93 Difference]: Finished difference Result 6912 states and 8473 transitions. [2020-09-24 19:30:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:30:04,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-09-24 19:30:04,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:04,748 INFO L225 Difference]: With dead ends: 6912 [2020-09-24 19:30:04,748 INFO L226 Difference]: Without dead ends: 3902 [2020-09-24 19:30:04,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:30:04,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2020-09-24 19:30:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3500. [2020-09-24 19:30:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3500 states. [2020-09-24 19:30:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 4092 transitions. [2020-09-24 19:30:04,863 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 4092 transitions. Word has length 301 [2020-09-24 19:30:04,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:04,864 INFO L479 AbstractCegarLoop]: Abstraction has 3500 states and 4092 transitions. [2020-09-24 19:30:04,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:04,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 4092 transitions. [2020-09-24 19:30:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-24 19:30:04,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:04,875 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:04,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:30:04,875 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:04,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2095514643, now seen corresponding path program 1 times [2020-09-24 19:30:04,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:04,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127024124] [2020-09-24 19:30:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:05,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:05,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:05,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-09-24 19:30:05,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:30:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:30:05,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 276 [2020-09-24 19:30:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:30:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:06,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:06,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:06,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:06,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:06,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:06,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:06,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:06,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:06,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:06,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:06,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:06,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:30:06,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:06,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 19:30:06,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:06,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:30:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:06,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:06,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-24 19:30:06,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 19:30:06,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:06,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-24 19:30:06,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-09-24 19:30:06,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127024124] [2020-09-24 19:30:06,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:06,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:06,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116764874] [2020-09-24 19:30:06,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:06,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:06,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:06,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:06,442 INFO L87 Difference]: Start difference. First operand 3500 states and 4092 transitions. Second operand 5 states. [2020-09-24 19:30:07,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:07,557 INFO L93 Difference]: Finished difference Result 3512 states and 4112 transitions. [2020-09-24 19:30:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:07,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-09-24 19:30:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:07,563 INFO L225 Difference]: With dead ends: 3512 [2020-09-24 19:30:07,564 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:30:07,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:30:07,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:30:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:30:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:30:07,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 310 [2020-09-24 19:30:07,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:07,572 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:30:07,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:07,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:30:07,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:30:07,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:30:07,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:30:09,272 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 130