/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_20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:32:05,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:32:05,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:32:05,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:32:05,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:32:05,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:32:05,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:32:05,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:32:05,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:32:05,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:32:05,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:32:05,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:32:05,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:32:05,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:32:05,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:32:05,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:32:05,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:32:05,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:32:05,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:32:05,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:32:05,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:32:05,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:32:05,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:32:05,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:32:05,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:32:05,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:32:05,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:32:05,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:32:05,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:32:05,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:32:05,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:32:05,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:32:05,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:32:05,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:32:05,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:32:05,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:32:05,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:32:05,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:32:05,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:32:05,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:32:05,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:32:05,322 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 21:32:05,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:32:05,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:32:05,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:32:05,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:32:05,351 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:32:05,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:32:05,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:32:05,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:32:05,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:32:05,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:32:05,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:32:05,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:32:05,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:32:05,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:32:05,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:32:05,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:32:05,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:32:05,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:32:05,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:32:05,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:32:05,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:32:05,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:32:05,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:32:05,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:32:05,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:32:05,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:32:05,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:32:05,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:32:05,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:32:05,356 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 21:32:05,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:32:05,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:32:05,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:32:05,867 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:32:05,867 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:32:05,868 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-24 21:32:05,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d014d0849/288e9fc7c8244def879c29d3ee9ec031/FLAGd8f30efd4 [2020-09-24 21:32:06,488 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:32:06,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-24 21:32:06,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d014d0849/288e9fc7c8244def879c29d3ee9ec031/FLAGd8f30efd4 [2020-09-24 21:32:06,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d014d0849/288e9fc7c8244def879c29d3ee9ec031 [2020-09-24 21:32:06,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:32:06,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:32:06,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:06,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:32:06,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:32:06,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:06" (1/1) ... [2020-09-24 21:32:06,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd7b52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:06, skipping insertion in model container [2020-09-24 21:32:06,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:06" (1/1) ... [2020-09-24 21:32:06,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:32:06,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:32:07,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:07,102 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:32:07,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:07,141 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:32:07,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07 WrapperNode [2020-09-24 21:32:07,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:07,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:32:07,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:32:07,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:32:07,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:32:07,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:32:07,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:32:07,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:32:07,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (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 21:32:07,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:32:07,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:32:07,339 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 21:32:07,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:32:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:32:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:32:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 21:32:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:32:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:32:07,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:32:07,560 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:32:07,560 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:32:07,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:07 BoogieIcfgContainer [2020-09-24 21:32:07,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:32:07,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:32:07,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:32:07,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:32:07,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:32:06" (1/3) ... [2020-09-24 21:32:07,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d523a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:07, skipping insertion in model container [2020-09-24 21:32:07,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (2/3) ... [2020-09-24 21:32:07,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d523a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:07, skipping insertion in model container [2020-09-24 21:32:07,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:07" (3/3) ... [2020-09-24 21:32:07,575 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_20-2.c [2020-09-24 21:32:07,588 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:32:07,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:32:07,622 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:32:07,652 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:32:07,652 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:32:07,652 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:32:07,652 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:32:07,653 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:32:07,653 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:32:07,653 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:32:07,653 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:32:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 21:32:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:32:07,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:07,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:07,683 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:07,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:07,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 21:32:07,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:07,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530847299] [2020-09-24 21:32:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:07,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:32:07,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:07,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 21:32:07,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:32:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:32:07,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:07,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:32:07,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:07,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:07,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:07,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:07,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:32:07,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:07,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,093 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 21:32:08,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530847299] [2020-09-24 21:32:08,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:08,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:08,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960946559] [2020-09-24 21:32:08,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:08,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:08,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:08,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:08,128 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 21:32:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:08,243 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 21:32:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:08,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:32:08,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:08,260 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:08,260 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 21:32:08,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 21:32:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 21:32:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:08,324 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 21:32:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:08,325 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:08,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 21:32:08,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:08,328 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 21:32:08,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:32:08,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:08,329 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 21:32:08,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:08,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564104920] [2020-09-24 21:32:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 21:32:08,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 21:32:08,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:08,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:08,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:08,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:08,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 21:32:08,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:08,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:08,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:08,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,587 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 21:32:08,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564104920] [2020-09-24 21:32:08,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:08,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:08,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409325498] [2020-09-24 21:32:08,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:08,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:08,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:08,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:08,592 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 21:32:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:08,668 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 21:32:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:08,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 21:32:08,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:08,671 INFO L225 Difference]: With dead ends: 36 [2020-09-24 21:32:08,671 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:32:08,672 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 21:32:08,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:32:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 21:32:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:08,681 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 21:32:08,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:08,681 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:08,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:08,682 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:32:08,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:08,684 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 21:32:08,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:32:08,684 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:08,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:08,685 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 21:32:08,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:08,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916051999] [2020-09-24 21:32:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:09,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:32:09,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-09-24 21:32:09,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:32:09,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:09,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:09,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:09,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:09,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:09,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:09,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:09,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:09,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:09,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:09,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:09,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:09,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:09,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-24 21:32:09,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:32:09,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:09,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:09,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:09,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:32:09,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:09,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:09,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:09,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:09,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:32:09,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:09,942 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 21:32:09,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916051999] [2020-09-24 21:32:09,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:09,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:09,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857981654] [2020-09-24 21:32:09,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:09,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:09,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:09,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:09,953 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 21:32:10,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:10,135 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 21:32:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:32:10,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 21:32:10,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:10,142 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:10,142 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 21:32:10,143 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 21:32:10,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 21:32:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 21:32:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 21:32:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 21:32:10,168 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 21:32:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:10,169 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 21:32:10,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 21:32:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:32:10,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:10,174 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 21:32:10,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:32:10,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:10,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:10,177 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 21:32:10,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:10,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765380258] [2020-09-24 21:32:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:32:10,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:10,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-09-24 21:32:10,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:32:10,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:10,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:10,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:10,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:10,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:11,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:11,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-09-24 21:32:11,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:11,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:11,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:11,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:11,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:11,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:32:11,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:11,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:11,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:11,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:11,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:11,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:32:11,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:32:11,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765380258] [2020-09-24 21:32:11,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:11,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:11,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36875979] [2020-09-24 21:32:11,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:11,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:11,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:11,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:11,558 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-24 21:32:11,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:11,704 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-24 21:32:11,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:32:11,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 21:32:11,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:11,708 INFO L225 Difference]: With dead ends: 88 [2020-09-24 21:32:11,708 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 21:32:11,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:11,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 21:32:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-24 21:32:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 21:32:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-24 21:32:11,726 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-24 21:32:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:11,726 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-24 21:32:11,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:11,727 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-24 21:32:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:32:11,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:11,731 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 21:32:11,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:32:11,731 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:11,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:11,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 21:32:11,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:11,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583327215] [2020-09-24 21:32:11,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:12,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:12,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:16,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:32:16,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:32:16,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:16,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:32:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:16,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:16,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:16,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:16,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:16,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:16,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:16,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:17,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:32:20,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:32:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3953 [2020-09-24 21:32:20,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:20,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:20,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:20,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:20,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-24 21:32:20,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:21,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:21,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:21,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:21,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:21,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:21,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:21,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:21,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:21,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:21,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:21,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:21,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:21,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:21,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:21,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:21,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:21,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:21,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:21,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:21,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 21:32:21,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583327215] [2020-09-24 21:32:21,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:21,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:32:21,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602925937] [2020-09-24 21:32:21,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:32:21,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:21,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:32:21,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:32:21,071 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 8 states. [2020-09-24 21:32:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:21,392 INFO L93 Difference]: Finished difference Result 94 states and 148 transitions. [2020-09-24 21:32:21,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:32:21,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 21:32:21,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:21,402 INFO L225 Difference]: With dead ends: 94 [2020-09-24 21:32:21,403 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 21:32:21,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 21:32:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 21:32:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-09-24 21:32:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-24 21:32:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 132 transitions. [2020-09-24 21:32:21,449 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 132 transitions. Word has length 51 [2020-09-24 21:32:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:21,450 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 132 transitions. [2020-09-24 21:32:21,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:32:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 132 transitions. [2020-09-24 21:32:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 21:32:21,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:21,466 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 21:32:21,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:32:21,467 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:21,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:21,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1161869885, now seen corresponding path program 2 times [2020-09-24 21:32:21,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:21,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675233534] [2020-09-24 21:32:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:21,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 21:32:26,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 21:32:26,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 21:32:26,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:26,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:26,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:31,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 21:32:31,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-24 21:32:31,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:31,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:32:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:32:31,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 21:32:31,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:32:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:31,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:32,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-24 21:32:32,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:32,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:32,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:32:32,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:32,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:32,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:32:32,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:32,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:32,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:32,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:32:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:32:33,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:32:33,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1493 [2020-09-24 21:32:33,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:33,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:32:33,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:33,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:33,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:33,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-24 21:32:33,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:33,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:32:33,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:33,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:33,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:33,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:33,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:33,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 54 proven. 77 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 21:32:33,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675233534] [2020-09-24 21:32:33,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:33,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:32:33,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108808319] [2020-09-24 21:32:33,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:32:33,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:33,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:32:33,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:32:33,929 INFO L87 Difference]: Start difference. First operand 82 states and 132 transitions. Second operand 14 states. [2020-09-24 21:32:34,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:34,106 INFO L93 Difference]: Finished difference Result 157 states and 269 transitions. [2020-09-24 21:32:34,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:32:34,107 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-09-24 21:32:34,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:34,109 INFO L225 Difference]: With dead ends: 157 [2020-09-24 21:32:34,110 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 21:32:34,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:32:34,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 21:32:34,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-09-24 21:32:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 21:32:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2020-09-24 21:32:34,123 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 87 [2020-09-24 21:32:34,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:34,124 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2020-09-24 21:32:34,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:32:34,124 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2020-09-24 21:32:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 21:32:34,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:34,126 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 21:32:34,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:32:34,127 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:34,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:34,127 INFO L82 PathProgramCache]: Analyzing trace with hash -527666429, now seen corresponding path program 3 times [2020-09-24 21:32:34,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:34,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213592275] [2020-09-24 21:32:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:34,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:36,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:39,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 21:32:39,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:32:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:32:39,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:39,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:39,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:39,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:39,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:39,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:39,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:39,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 21:32:44,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 21:32:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:32:44,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:32:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 21:32:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:32:44,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:44,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-09-24 21:32:44,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 21:32:44,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:44,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:44,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:32:44,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:44,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:44,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:44,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:44,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:44,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:32:44,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:44,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:44,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:32:44,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:44,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:44,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:44,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:44,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:44,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:44,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 21:32:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:44,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:49,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 21:32:49,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 21:32:49,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:49,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:49,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:49,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:32:49,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:32:50,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:50,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-24 21:32:50,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:32:50,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:50,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:50,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:50,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:50,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:50,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:50,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:50,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:50,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:50,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:50,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:50,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:50,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 21:32:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:50,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:50,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:50,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 106 proven. 117 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-24 21:32:50,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213592275] [2020-09-24 21:32:50,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:50,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:32:50,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252289933] [2020-09-24 21:32:50,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:32:50,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:50,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:32:50,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:32:50,383 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand 8 states. [2020-09-24 21:32:50,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:50,558 INFO L93 Difference]: Finished difference Result 131 states and 184 transitions. [2020-09-24 21:32:50,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:32:50,559 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-09-24 21:32:50,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:50,560 INFO L225 Difference]: With dead ends: 131 [2020-09-24 21:32:50,561 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 21:32:50,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:32:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 21:32:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 21:32:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 21:32:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-09-24 21:32:50,570 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 123 [2020-09-24 21:32:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:50,570 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-09-24 21:32:50,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:32:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-09-24 21:32:50,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 21:32:50,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:50,572 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 21:32:50,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:32:50,573 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:50,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:50,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-24 21:32:50,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:50,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690509611] [2020-09-24 21:32:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:55,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 21:32:55,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:32:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:32:55,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:32:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:55,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:55,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:55,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:55,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:55,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:56,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:56,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking...