/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:32:02,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:32:02,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:32:02,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:32:02,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:32:02,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:32:02,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:32:02,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:32:02,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:32:02,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:32:02,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:32:02,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:32:02,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:32:02,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:32:02,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:32:02,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:32:02,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:32:02,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:32:02,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:32:02,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:32:02,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:32:02,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:32:02,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:32:02,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:32:02,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:32:02,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:32:02,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:32:02,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:32:02,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:32:02,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:32:02,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:32:02,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:32:02,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:32:02,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:32:02,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:32:02,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:32:02,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:32:02,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:32:02,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:32:02,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:32:02,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:32:02,097 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 21:32:02,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:32:02,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:32:02,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:32:02,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:32:02,124 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:32:02,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:32:02,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:32:02,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:32:02,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:32:02,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:32:02,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:32:02,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:32:02,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:32:02,126 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:32:02,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:32:02,126 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:32:02,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:32:02,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:32:02,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:32:02,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:32:02,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:32:02,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:32:02,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:32:02,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:32:02,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:32:02,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:32:02,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:32:02,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:32:02,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:32:02,129 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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:32:02,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:32:02,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:32:02,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:32:02,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:32:02,626 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:32:02,627 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-1.c [2020-09-24 21:32:02,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43aedd171/1b3de273817e4b0886f0343e3f47f652/FLAGdb396e894 [2020-09-24 21:32:03,272 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:32:03,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-1.c [2020-09-24 21:32:03,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43aedd171/1b3de273817e4b0886f0343e3f47f652/FLAGdb396e894 [2020-09-24 21:32:03,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43aedd171/1b3de273817e4b0886f0343e3f47f652 [2020-09-24 21:32:03,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:32:03,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:32:03,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:03,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:32:03,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:32:03,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51da39e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03, skipping insertion in model container [2020-09-24 21:32:03,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:32:03,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:32:03,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:03,896 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:32:03,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:03,933 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:32:03,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03 WrapperNode [2020-09-24 21:32:03,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:03,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:32:03,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:32:03,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:32:03,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:32:03,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:32:03,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:32:03,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:32:03,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (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 21:32:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:32:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:32:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 21:32:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:32:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:32:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:32:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 21:32:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:32:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:32:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:32:04,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:32:04,336 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:32:04,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:04 BoogieIcfgContainer [2020-09-24 21:32:04,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:32:04,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:32:04,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:32:04,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:32:04,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:32:03" (1/3) ... [2020-09-24 21:32:04,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a67c4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:04, skipping insertion in model container [2020-09-24 21:32:04,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (2/3) ... [2020-09-24 21:32:04,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a67c4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:04, skipping insertion in model container [2020-09-24 21:32:04,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:04" (3/3) ... [2020-09-24 21:32:04,352 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_20-1.c [2020-09-24 21:32:04,364 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:32:04,376 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:32:04,404 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:32:04,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:32:04,445 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:32:04,445 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:32:04,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:32:04,445 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:32:04,446 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:32:04,446 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:32:04,446 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:32:04,474 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 21:32:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:32:04,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:04,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:04,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:04,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 21:32:04,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:04,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301444559] [2020-09-24 21:32:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:32:04,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-24 21:32:04,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:32:04,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:32:04,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:04,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:04,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:04,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:04,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:04,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:32:04,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:04,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:04,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:05,020 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 21:32:05,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301444559] [2020-09-24 21:32:05,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:05,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:05,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815674419] [2020-09-24 21:32:05,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:05,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:05,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:05,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:05,051 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 21:32:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:05,194 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 21:32:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:05,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:32:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:05,211 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:05,211 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 21:32:05,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 21:32:05,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 21:32:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:05,276 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 21:32:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:05,277 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:05,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 21:32:05,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:05,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:05,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:32:05,281 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:05,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:05,281 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 21:32:05,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:05,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385197704] [2020-09-24 21:32:05,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:05,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 21:32:05,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 21:32:05,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:05,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:05,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:05,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:05,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:05,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:05,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:05,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:05,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:05,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:05,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:32:05,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:05,617 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 21:32:05,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385197704] [2020-09-24 21:32:05,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:05,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:05,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878909544] [2020-09-24 21:32:05,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:05,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:05,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:05,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:05,622 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 21:32:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:05,689 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 21:32:05,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:05,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 21:32:05,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:05,691 INFO L225 Difference]: With dead ends: 36 [2020-09-24 21:32:05,692 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:32:05,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:32:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 21:32:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:05,702 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 21:32:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:05,703 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:05,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:32:05,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:05,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:05,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:32:05,706 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:05,706 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 21:32:05,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:05,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052651310] [2020-09-24 21:32:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:07,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:32:07,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:07,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2054 [2020-09-24 21:32:07,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:32:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:07,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:07,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:07,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:07,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:07,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:07,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:08,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-24 21:32:08,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:32:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:32:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:08,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:08,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:32:08,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052651310] [2020-09-24 21:32:08,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:08,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:08,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195875540] [2020-09-24 21:32:08,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:08,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:08,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:08,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:08,161 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 21:32:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:08,380 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 21:32:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:32:08,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 21:32:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:08,383 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:08,386 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 21:32:08,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:32:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 21:32:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 21:32:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 21:32:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 21:32:08,414 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 21:32:08,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:08,414 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 21:32:08,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 21:32:08,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:32:08,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:08,421 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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 21:32:08,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:32:08,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:08,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:08,422 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 21:32:08,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:08,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870065683] [2020-09-24 21:32:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:32:10,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:32:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1751 [2020-09-24 21:32:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:32:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:10,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:10,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:10,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:10,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-24 21:32:10,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:10,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:10,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:32:10,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:10,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:32:10,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:10,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:32:10,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870065683] [2020-09-24 21:32:10,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:10,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:10,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038484154] [2020-09-24 21:32:10,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:10,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:10,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:10,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:10,770 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-24 21:32:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:10,931 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2020-09-24 21:32:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:32:10,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 21:32:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:10,935 INFO L225 Difference]: With dead ends: 76 [2020-09-24 21:32:10,935 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 21:32:10,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:10,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 21:32:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2020-09-24 21:32:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 21:32:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2020-09-24 21:32:10,954 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 35 [2020-09-24 21:32:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:10,955 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2020-09-24 21:32:10,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2020-09-24 21:32:10,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:32:10,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:10,958 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-24 21:32:10,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:32:10,958 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:10,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 21:32:10,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:10,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502492388] [2020-09-24 21:32:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:15,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:32:15,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:32:15,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:15,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:32:15,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:15,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:15,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:15,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:15,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:15,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:16,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:32:19,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:32:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3297 [2020-09-24 21:32:19,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:19,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:19,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 21:32:19,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:19,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:19,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:19,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:19,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:19,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:19,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:19,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:19,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:19,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 21:32:19,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502492388] [2020-09-24 21:32:19,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:19,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:32:19,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424843525] [2020-09-24 21:32:19,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:32:19,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:19,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:32:19,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:19,585 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand 9 states. [2020-09-24 21:32:19,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:19,709 INFO L93 Difference]: Finished difference Result 138 states and 212 transitions. [2020-09-24 21:32:19,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:32:19,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 21:32:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:19,712 INFO L225 Difference]: With dead ends: 138 [2020-09-24 21:32:19,712 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 21:32:19,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:32:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 21:32:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2020-09-24 21:32:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 21:32:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 92 transitions. [2020-09-24 21:32:19,731 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 92 transitions. Word has length 51 [2020-09-24 21:32:19,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:19,732 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 92 transitions. [2020-09-24 21:32:19,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:32:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 92 transitions. [2020-09-24 21:32:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 21:32:19,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:19,736 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:19,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:32:19,737 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:19,738 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 2 times [2020-09-24 21:32:19,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:19,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886572017] [2020-09-24 21:32:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:24,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 21:32:24,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:32:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:24,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:24,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:24,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:24,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:24,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:24,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:24,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:24,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:24,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:24,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:24,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:24,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:29,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 21:32:29,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:32:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:32:29,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:32:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 21:32:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:29,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:29,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:30,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:30,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:30,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-24 21:32:30,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:30,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:30,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:30,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:30,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:30,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:32:30,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:30,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:30,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:30,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:30,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:30,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:32:30,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:30,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:32:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:30,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:32:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:32:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-09-24 21:32:32,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:32:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:32,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:32:32,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:32,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:32,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:32,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:32,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:32,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:32,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:32:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:32,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:32,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:32,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:32,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:32,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:32,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 58 proven. 67 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-24 21:32:32,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886572017] [2020-09-24 21:32:32,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:32,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:32:32,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216115281] [2020-09-24 21:32:32,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:32:32,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:32:32,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:32:32,350 INFO L87 Difference]: Start difference. First operand 68 states and 92 transitions. Second operand 11 states. [2020-09-24 21:32:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:32,522 INFO L93 Difference]: Finished difference Result 143 states and 219 transitions. [2020-09-24 21:32:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:32:32,523 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-09-24 21:32:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:32,526 INFO L225 Difference]: With dead ends: 143 [2020-09-24 21:32:32,526 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 21:32:32,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:32:32,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 21:32:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2020-09-24 21:32:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 21:32:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2020-09-24 21:32:32,539 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 87 [2020-09-24 21:32:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:32,540 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2020-09-24 21:32:32,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:32:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2020-09-24 21:32:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 21:32:32,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:32,544 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:32,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:32:32,544 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:32,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1068467993, now seen corresponding path program 2 times [2020-09-24 21:32:32,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:32,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172950281] [2020-09-24 21:32:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:37,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 21:32:37,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:32:37,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:37,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:37,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:37,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:37,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:37,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:37,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:37,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:42,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 21:32:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 21:32:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:32:42,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:32:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 21:32:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:42,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:42,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:42,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:42,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 21:32:42,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:32:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:42,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:42,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:42,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:42,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:32:42,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:42,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:42,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:42,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:42,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:42,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 21:32:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:42,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:46,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:32:46,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:32:46,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3949 [2020-09-24 21:32:46,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 21:32:46,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:46,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:47,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:47,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 21:32:47,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:47,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:47,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:47,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:47,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:47,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:47,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:47,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:47,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:47,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:47,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:47,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:47,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:47,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:47,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:47,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:47,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:47,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 21:32:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:47,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:47,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:47,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:47,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:47,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:47,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:47,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:47,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 56 proven. 81 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-09-24 21:32:47,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172950281] [2020-09-24 21:32:47,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:47,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:32:47,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726329954] [2020-09-24 21:32:47,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:32:47,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:47,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:32:47,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:47,096 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand 9 states. [2020-09-24 21:32:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:47,325 INFO L93 Difference]: Finished difference Result 178 states and 263 transitions. [2020-09-24 21:32:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:32:47,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-24 21:32:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:47,329 INFO L225 Difference]: With dead ends: 178 [2020-09-24 21:32:47,330 INFO L226 Difference]: Without dead ends: 118 [2020-09-24 21:32:47,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:32:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-24 21:32:47,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 99. [2020-09-24 21:32:47,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-24 21:32:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2020-09-24 21:32:47,346 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 89 [2020-09-24 21:32:47,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:47,347 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2020-09-24 21:32:47,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:32:47,347 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2020-09-24 21:32:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 21:32:47,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:47,349 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:47,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:32:47,350 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:47,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:47,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 3 times [2020-09-24 21:32:47,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:47,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670131680] [2020-09-24 21:32:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:52,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 21:32:52,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:32:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:52,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:32:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:52,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:52,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:52,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:52,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:52,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:52,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:52,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:52,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:52,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:52,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:53,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:53,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:57,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 21:32:57,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:32:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:32:57,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:32:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:32:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 21:32:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:57,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:57,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking...