/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/rewrev.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:29:47,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:29:47,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:29:47,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:29:47,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:29:47,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:29:47,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:29:47,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:29:47,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:29:47,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:29:47,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:29:47,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:29:47,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:29:47,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:29:47,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:29:47,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:29:47,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:29:47,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:29:47,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:29:47,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:29:47,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:29:47,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:29:47,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:29:47,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:29:47,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:29:47,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:29:47,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:29:47,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:29:47,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:29:47,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:29:47,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:29:47,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:29:47,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:29:47,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:29:47,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:29:47,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:29:47,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:29:47,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:29:47,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:29:47,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:29:47,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:29:47,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 10:29:47,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:29:47,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:29:47,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:29:47,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:29:47,289 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:29:47,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:29:47,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:29:47,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:29:47,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:29:47,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:29:47,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:29:47,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:29:47,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:29:47,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:29:47,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:29:47,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:29:47,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:29:47,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:29:47,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:29:47,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:29:47,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:29:47,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:29:47,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:29:47,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:29:47,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:29:47,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:29:47,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:29:47,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:29:47,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:29:47,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:29:47,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:29:47,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:29:47,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:29:47,645 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:29:47,646 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:29:47,647 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewrev.c [2020-10-12 10:29:47,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8a7d586d/83ea2792f95940099a6590d2595253ff/FLAG7bb45bfe8 [2020-10-12 10:29:48,236 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:29:48,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rewrev.c [2020-10-12 10:29:48,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8a7d586d/83ea2792f95940099a6590d2595253ff/FLAG7bb45bfe8 [2020-10-12 10:29:48,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8a7d586d/83ea2792f95940099a6590d2595253ff [2020-10-12 10:29:48,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:29:48,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:29:48,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:29:48,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:29:48,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:29:48,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:29:48" (1/1) ... [2020-10-12 10:29:48,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e74e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48, skipping insertion in model container [2020-10-12 10:29:48,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:29:48" (1/1) ... [2020-10-12 10:29:48,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:29:48,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:29:48,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:29:48,905 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:29:48,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:29:48,941 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:29:48,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48 WrapperNode [2020-10-12 10:29:48,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:29:48,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:29:48,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:29:48,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:29:49,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48" (1/1) ... [2020-10-12 10:29:49,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48" (1/1) ... [2020-10-12 10:29:49,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48" (1/1) ... [2020-10-12 10:29:49,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48" (1/1) ... [2020-10-12 10:29:49,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48" (1/1) ... [2020-10-12 10:29:49,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48" (1/1) ... [2020-10-12 10:29:49,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48" (1/1) ... [2020-10-12 10:29:49,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:29:49,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:29:49,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:29:49,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:29:49,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:29:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:29:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:29:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:29:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:29:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 10:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 10:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:29:49,393 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:29:49,394 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 10:29:49,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:29:49 BoogieIcfgContainer [2020-10-12 10:29:49,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:29:49,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:29:49,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:29:49,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:29:49,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:29:48" (1/3) ... [2020-10-12 10:29:49,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53609bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:29:49, skipping insertion in model container [2020-10-12 10:29:49,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:48" (2/3) ... [2020-10-12 10:29:49,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53609bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:29:49, skipping insertion in model container [2020-10-12 10:29:49,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:29:49" (3/3) ... [2020-10-12 10:29:49,406 INFO L109 eAbstractionObserver]: Analyzing ICFG rewrev.c [2020-10-12 10:29:49,417 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:29:49,423 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:29:49,437 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:29:49,474 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:29:49,474 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:29:49,474 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:29:49,474 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:29:49,475 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:29:49,475 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:29:49,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:29:49,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:29:49,492 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-12 10:29:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 10:29:49,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:49,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:49,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:49,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1564765221, now seen corresponding path program 1 times [2020-10-12 10:29:49,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:49,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519858082] [2020-10-12 10:29:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:49,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:49,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 10:29:49,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 10:29:49,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 10:29:49,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:29:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:49,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:49,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:49,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:49,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:29:49,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:49,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519858082] [2020-10-12 10:29:49,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:49,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:29:49,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694868015] [2020-10-12 10:29:49,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:29:49,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:50,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:29:50,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:50,006 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-12 10:29:50,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:50,152 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2020-10-12 10:29:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:29:50,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-12 10:29:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:50,164 INFO L225 Difference]: With dead ends: 54 [2020-10-12 10:29:50,165 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 10:29:50,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:50,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 10:29:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-12 10:29:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 10:29:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-12 10:29:50,210 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2020-10-12 10:29:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:50,210 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-12 10:29:50,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:29:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-12 10:29:50,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 10:29:50,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:50,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:50,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:29:50,213 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:50,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:50,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1138009376, now seen corresponding path program 1 times [2020-10-12 10:29:50,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:50,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114845124] [2020-10-12 10:29:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:50,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 10:29:50,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:29:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-12 10:29:50,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:29:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:29:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 10:29:50,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:50,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:50,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:50,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:50,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:50,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:50,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:50,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:50,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:50,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:50,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:50,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114845124] [2020-10-12 10:29:50,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:50,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:29:50,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60595319] [2020-10-12 10:29:50,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:29:50,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:50,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:29:50,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:50,518 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-10-12 10:29:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:50,600 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-12 10:29:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:29:50,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-12 10:29:50,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:50,602 INFO L225 Difference]: With dead ends: 38 [2020-10-12 10:29:50,602 INFO L226 Difference]: Without dead ends: 27 [2020-10-12 10:29:50,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:50,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-12 10:29:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-12 10:29:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 10:29:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-12 10:29:50,611 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2020-10-12 10:29:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:50,612 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-12 10:29:50,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:29:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-12 10:29:50,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:29:50,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:50,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:50,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:29:50,628 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:50,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:50,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1844234969, now seen corresponding path program 1 times [2020-10-12 10:29:50,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:50,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097718578] [2020-10-12 10:29:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:50,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:50,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:50,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:51,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:51,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:29:51,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:29:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-10-12 10:29:51,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:29:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 10:29:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:52,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:52,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:52,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:52,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:29:52,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097718578] [2020-10-12 10:29:52,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:52,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:29:52,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73948826] [2020-10-12 10:29:52,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:29:52,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:52,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:29:52,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:29:52,037 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-10-12 10:29:52,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:52,490 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-10-12 10:29:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:29:52,491 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-10-12 10:29:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:52,492 INFO L225 Difference]: With dead ends: 37 [2020-10-12 10:29:52,492 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 10:29:52,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:29:52,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 10:29:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-12 10:29:52,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 10:29:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-12 10:29:52,503 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2020-10-12 10:29:52,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:52,503 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-12 10:29:52,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:29:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-12 10:29:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 10:29:52,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:52,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:52,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:29:52,506 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:52,506 INFO L82 PathProgramCache]: Analyzing trace with hash 2097899152, now seen corresponding path program 1 times [2020-10-12 10:29:52,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:52,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733969231] [2020-10-12 10:29:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:53,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 10:29:54,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:29:54,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-10-12 10:29:54,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:29:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:29:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 10:29:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:29:54,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:54,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:54,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:54,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:54,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:54,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:29:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:54,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 10:29:54,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:29:54,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:54,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:55,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733969231] [2020-10-12 10:29:55,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:55,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:29:55,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94802841] [2020-10-12 10:29:55,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:29:55,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:55,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:29:55,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:29:55,060 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 17 states. [2020-10-12 10:29:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:55,916 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-12 10:29:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:29:55,916 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2020-10-12 10:29:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:55,921 INFO L225 Difference]: With dead ends: 54 [2020-10-12 10:29:55,922 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 10:29:55,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:29:55,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 10:29:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-12 10:29:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 10:29:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-12 10:29:55,939 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 30 [2020-10-12 10:29:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:55,940 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-12 10:29:55,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:29:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-12 10:29:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:29:55,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:55,943 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:55,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:29:55,944 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:55,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1882997047, now seen corresponding path program 2 times [2020-10-12 10:29:55,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:55,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741220020] [2020-10-12 10:29:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:55,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:56,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:56,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:56,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:56,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:57,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:57,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:59,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:59,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 10:29:59,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 10:29:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3263 [2020-10-12 10:29:59,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:29:59,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:29:59,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 10:29:59,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:59,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:59,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:59,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:59,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:59,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:59,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 10:29:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:59,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:59,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:59,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:59,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:59,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:29:59,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:59,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:29:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:59,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741220020] [2020-10-12 10:29:59,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:59,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:29:59,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39029079] [2020-10-12 10:29:59,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:29:59,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:59,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:29:59,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:29:59,827 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 20 states. [2020-10-12 10:30:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:00,556 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-10-12 10:30:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:30:00,557 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 34 [2020-10-12 10:30:00,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:00,558 INFO L225 Difference]: With dead ends: 58 [2020-10-12 10:30:00,558 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 10:30:00,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 10:30:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 10:30:00,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 41. [2020-10-12 10:30:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 10:30:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-12 10:30:00,582 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 34 [2020-10-12 10:30:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:00,582 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-12 10:30:00,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:30:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-12 10:30:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 10:30:00,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:00,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:00,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:30:00,587 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:00,588 INFO L82 PathProgramCache]: Analyzing trace with hash -95790265, now seen corresponding path program 3 times [2020-10-12 10:30:00,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:00,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990852525] [2020-10-12 10:30:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 10:30:00,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:30:00,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-12 10:30:00,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:30:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:30:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 10:30:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:00,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:01,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:01,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:01,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:01,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:01,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:01,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:01,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:30:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:01,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:01,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:01,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:01,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:30:01,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:01,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:30:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:01,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:01,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:01,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:01,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:30:01,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:01,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:01,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:30:01,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990852525] [2020-10-12 10:30:01,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:01,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:30:01,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703461372] [2020-10-12 10:30:01,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:30:01,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:01,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:30:01,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:30:01,044 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 9 states. [2020-10-12 10:30:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:01,378 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2020-10-12 10:30:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:30:01,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-12 10:30:01,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:01,381 INFO L225 Difference]: With dead ends: 88 [2020-10-12 10:30:01,381 INFO L226 Difference]: Without dead ends: 53 [2020-10-12 10:30:01,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:30:01,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-12 10:30:01,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2020-10-12 10:30:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 10:30:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-12 10:30:01,402 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 38 [2020-10-12 10:30:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:01,403 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-12 10:30:01,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:30:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-12 10:30:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 10:30:01,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:01,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:01,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:30:01,407 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:01,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1561203522, now seen corresponding path program 4 times [2020-10-12 10:30:01,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:01,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288970188] [2020-10-12 10:30:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:01,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:01,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:02,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:03,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:03,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 10:30:03,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:30:03,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1951 [2020-10-12 10:30:03,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 10:30:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:30:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 10:30:03,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:03,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:03,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:03,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:03,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:03,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 10:30:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:03,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:03,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:03,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:03,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 10:30:03,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:30:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:03,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:03,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:03,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:03,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:30:03,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:30:03,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288970188] [2020-10-12 10:30:03,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:03,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:30:03,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071006976] [2020-10-12 10:30:03,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:30:03,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:03,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:30:03,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:30:03,840 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 20 states. [2020-10-12 10:30:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:05,278 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-10-12 10:30:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 10:30:05,279 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 42 [2020-10-12 10:30:05,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:05,281 INFO L225 Difference]: With dead ends: 72 [2020-10-12 10:30:05,281 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 10:30:05,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=271, Invalid=1709, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 10:30:05,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 10:30:05,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-12 10:30:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-12 10:30:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2020-10-12 10:30:05,313 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 42 [2020-10-12 10:30:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:05,315 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2020-10-12 10:30:05,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:30:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2020-10-12 10:30:05,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 10:30:05,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:05,321 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:05,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:30:05,321 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:05,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:05,322 INFO L82 PathProgramCache]: Analyzing trace with hash -934761221, now seen corresponding path program 5 times [2020-10-12 10:30:05,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:05,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248154339] [2020-10-12 10:30:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:05,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:06,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:10,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 10:30:10,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 10:30:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4906 [2020-10-12 10:30:10,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 10:30:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:30:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 10:30:10,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:10,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:10,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:10,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:10,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:10,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:10,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:30:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:10,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:10,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:10,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:30:10,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:30:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:10,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:30:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:10,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:10,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:30:10,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:10,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:30:11,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248154339] [2020-10-12 10:30:11,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:11,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 10:30:11,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898476109] [2020-10-12 10:30:11,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 10:30:11,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:11,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 10:30:11,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:30:11,002 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 23 states. [2020-10-12 10:30:12,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:12,506 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-10-12 10:30:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 10:30:12,507 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2020-10-12 10:30:12,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:12,510 INFO L225 Difference]: With dead ends: 76 [2020-10-12 10:30:12,510 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 10:30:12,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=265, Invalid=1715, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 10:30:12,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 10:30:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2020-10-12 10:30:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 10:30:12,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-12 10:30:12,522 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 46 [2020-10-12 10:30:12,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:12,522 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-12 10:30:12,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 10:30:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-12 10:30:12,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 10:30:12,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:12,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:12,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:30:12,524 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:12,524 INFO L82 PathProgramCache]: Analyzing trace with hash -898222599, now seen corresponding path program 6 times [2020-10-12 10:30:12,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:12,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484642308] [2020-10-12 10:30:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:12,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:12,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:12,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 10:30:12,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:30:12,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-12 10:30:12,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:30:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:30:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 10:30:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:12,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:12,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:12,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:12,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:12,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:12,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:12,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:12,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:12,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 10:30:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:12,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:12,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:12,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:12,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:12,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:12,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:13,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:13,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:13,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:13,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:13,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:13,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:13,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:13,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:30:13,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:13,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 10:30:13,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484642308] [2020-10-12 10:30:13,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:13,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:30:13,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041229402] [2020-10-12 10:30:13,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:30:13,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:13,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:30:13,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:30:13,027 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 10 states. [2020-10-12 10:30:13,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:13,300 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2020-10-12 10:30:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:30:13,300 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-12 10:30:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:13,301 INFO L225 Difference]: With dead ends: 108 [2020-10-12 10:30:13,301 INFO L226 Difference]: Without dead ends: 65 [2020-10-12 10:30:13,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:30:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-12 10:30:13,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2020-10-12 10:30:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 10:30:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-10-12 10:30:13,311 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 50 [2020-10-12 10:30:13,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:13,311 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-10-12 10:30:13,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:30:13,311 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-10-12 10:30:13,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 10:30:13,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:13,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:13,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:30:13,313 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:13,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1529426572, now seen corresponding path program 7 times [2020-10-12 10:30:13,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:13,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037809517] [2020-10-12 10:30:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:13,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:14,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 10:30:15,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:30:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2352 [2020-10-12 10:30:15,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 10:30:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:30:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 10:30:15,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:16,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:16,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:16,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:16,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:16,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:16,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:30:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:16,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:16,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:30:16,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:30:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:16,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:30:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:16,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:16,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:16,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:16,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:16,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:30:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:16,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:16,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:30:16,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:16,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:16,187 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 10:30:16,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037809517] [2020-10-12 10:30:16,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:16,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:30:16,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049602561] [2020-10-12 10:30:16,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:30:16,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:16,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:30:16,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:30:16,190 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 22 states. [2020-10-12 10:30:18,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:18,215 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-12 10:30:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 10:30:18,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-12 10:30:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:18,220 INFO L225 Difference]: With dead ends: 88 [2020-10-12 10:30:18,220 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 10:30:18,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=353, Invalid=2403, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 10:30:18,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 10:30:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2020-10-12 10:30:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-12 10:30:18,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2020-10-12 10:30:18,233 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 54 [2020-10-12 10:30:18,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:18,234 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2020-10-12 10:30:18,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:30:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2020-10-12 10:30:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 10:30:18,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:18,235 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:18,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:30:18,236 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:18,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:18,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1753114797, now seen corresponding path program 8 times [2020-10-12 10:30:18,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:18,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928616214] [2020-10-12 10:30:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:22,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:23,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 10:30:23,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 10:30:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:30:23,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 10:30:23,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:30:23,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 10:30:23,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:24,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:24,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:24,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:30:24,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:30:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:24,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:30:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:24,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 10:30:24,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928616214] [2020-10-12 10:30:24,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:24,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 10:30:24,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880157799] [2020-10-12 10:30:24,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 10:30:24,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:24,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 10:30:24,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:30:24,270 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 24 states. [2020-10-12 10:30:26,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:26,538 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-12 10:30:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 10:30:26,539 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2020-10-12 10:30:26,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:26,541 INFO L225 Difference]: With dead ends: 90 [2020-10-12 10:30:26,541 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 10:30:26,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=348, Invalid=2202, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 10:30:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 10:30:26,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-12 10:30:26,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-12 10:30:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-10-12 10:30:26,563 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 58 [2020-10-12 10:30:26,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:26,564 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-10-12 10:30:26,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 10:30:26,565 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-10-12 10:30:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 10:30:26,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:26,566 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:26,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:30:26,566 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:26,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:26,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2017631787, now seen corresponding path program 9 times [2020-10-12 10:30:26,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:26,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586159949] [2020-10-12 10:30:26,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:27,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:27,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 10:30:27,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:30:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-12 10:30:27,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:30:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:30:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 10:30:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:27,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:27,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:27,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:27,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:27,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:27,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:27,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:27,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:27,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:27,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:30:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:27,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:27,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:27,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:27,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:27,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:30:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:27,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:27,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:27,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:27,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:30:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:27,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:27,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:27,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:27,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:27,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:27,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:27,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:27,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:30:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:27,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:27,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:27,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:27,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:27,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:27,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 10:30:27,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586159949] [2020-10-12 10:30:27,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:27,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:30:27,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827268890] [2020-10-12 10:30:27,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:30:27,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:27,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:30:27,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:30:27,145 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 11 states. [2020-10-12 10:30:27,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:27,467 INFO L93 Difference]: Finished difference Result 172 states and 189 transitions. [2020-10-12 10:30:27,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:30:27,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-10-12 10:30:27,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:27,469 INFO L225 Difference]: With dead ends: 172 [2020-10-12 10:30:27,469 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 10:30:27,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:30:27,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 10:30:27,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2020-10-12 10:30:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-12 10:30:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-10-12 10:30:27,483 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 62 [2020-10-12 10:30:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:27,483 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-10-12 10:30:27,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:30:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-10-12 10:30:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 10:30:27,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:27,485 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:27,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:30:27,485 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:27,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:27,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1536371418, now seen corresponding path program 10 times [2020-10-12 10:30:27,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:27,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366063650] [2020-10-12 10:30:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:27,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:32,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:32,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 10:30:32,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 10:30:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:30:32,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 10:30:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:30:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 10:30:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:32,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:32,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:32,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:32,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:32,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:32,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:32,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:32,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:32,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:32,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:32,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:32,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:32,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:32,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:32,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:32,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:32,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:32,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:30:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:32,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:32,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:30:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:32,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:32,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:32,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:32,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:32,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:30:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 29 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 10:30:33,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366063650] [2020-10-12 10:30:33,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:33,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 10:30:33,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572955278] [2020-10-12 10:30:33,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 10:30:33,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:33,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 10:30:33,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:30:33,054 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 21 states. [2020-10-12 10:30:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:35,315 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2020-10-12 10:30:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 10:30:35,321 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 66 [2020-10-12 10:30:35,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:35,322 INFO L225 Difference]: With dead ends: 106 [2020-10-12 10:30:35,322 INFO L226 Difference]: Without dead ends: 104 [2020-10-12 10:30:35,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 16 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=408, Invalid=2784, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 10:30:35,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-12 10:30:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2020-10-12 10:30:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 10:30:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-10-12 10:30:35,352 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 66 [2020-10-12 10:30:35,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:35,353 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-10-12 10:30:35,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 10:30:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-10-12 10:30:35,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:30:35,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:35,354 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:35,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:30:35,355 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:35,355 INFO L82 PathProgramCache]: Analyzing trace with hash 625750495, now seen corresponding path program 11 times [2020-10-12 10:30:35,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:35,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684662392] [2020-10-12 10:30:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:36,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:36,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:40,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:40,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:40,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:40,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 10:30:40,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 10:30:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 10:30:40,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:40,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 10:30:40,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:30:40,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 10:30:40,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:41,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:41,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:30:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:30:41,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:30:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:41,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:30:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:41,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:30:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:41,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:30:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:41,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 27 proven. 88 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 10:30:41,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684662392] [2020-10-12 10:30:41,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:41,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 10:30:41,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113247839] [2020-10-12 10:30:41,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 10:30:41,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:41,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 10:30:41,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:30:41,296 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 26 states. [2020-10-12 10:30:43,400 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-12 10:30:44,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:44,527 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-10-12 10:30:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 10:30:44,530 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 70 [2020-10-12 10:30:44,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:44,532 INFO L225 Difference]: With dead ends: 108 [2020-10-12 10:30:44,532 INFO L226 Difference]: Without dead ends: 106 [2020-10-12 10:30:44,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=389, Invalid=2917, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 10:30:44,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-12 10:30:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-10-12 10:30:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-12 10:30:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-10-12 10:30:44,551 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 70 [2020-10-12 10:30:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:44,551 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-10-12 10:30:44,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 10:30:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-10-12 10:30:44,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 10:30:44,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:44,554 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:44,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:30:44,555 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:44,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:44,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2021053405, now seen corresponding path program 12 times [2020-10-12 10:30:44,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:44,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435224474] [2020-10-12 10:30:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 10:30:44,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:30:44,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-12 10:30:44,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:30:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:30:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 10:30:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:44,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:44,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:44,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:44,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:44,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:44,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:30:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:44,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:30:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:44,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:44,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:30:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:44,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-12 10:30:45,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435224474] [2020-10-12 10:30:45,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:45,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:30:45,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652759570] [2020-10-12 10:30:45,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:30:45,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:45,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:30:45,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:30:45,005 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 12 states. [2020-10-12 10:30:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:45,505 INFO L93 Difference]: Finished difference Result 200 states and 219 transitions. [2020-10-12 10:30:45,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:30:45,506 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-10-12 10:30:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:45,512 INFO L225 Difference]: With dead ends: 200 [2020-10-12 10:30:45,512 INFO L226 Difference]: Without dead ends: 114 [2020-10-12 10:30:45,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:30:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-12 10:30:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2020-10-12 10:30:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-12 10:30:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2020-10-12 10:30:45,540 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 74 [2020-10-12 10:30:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:45,541 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2020-10-12 10:30:45,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:30:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2020-10-12 10:30:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 10:30:45,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:45,546 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:45,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:30:45,547 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:45,547 INFO L82 PathProgramCache]: Analyzing trace with hash 863464024, now seen corresponding path program 13 times [2020-10-12 10:30:45,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:45,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704552252] [2020-10-12 10:30:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:45,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:46,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:46,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:47,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:47,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:47,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:50,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:50,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 10:30:50,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 10:30:50,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:30:50,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 10:30:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:30:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 10:30:50,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:51,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:51,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:51,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:51,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:51,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:51,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:30:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:51,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:51,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:51,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:51,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:51,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:30:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:51,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:51,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:51,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:51,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:30:51,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:30:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:51,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:30:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:51,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:51,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:51,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:51,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:51,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:30:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:51,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:51,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:51,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:51,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:51,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:51,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:51,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:51,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:51,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:51,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:51,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:51,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 28 proven. 110 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 10:30:51,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704552252] [2020-10-12 10:30:51,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:51,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 10:30:51,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411313736] [2020-10-12 10:30:51,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 10:30:51,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:51,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 10:30:51,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:30:51,593 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand 26 states. [2020-10-12 10:30:55,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:55,313 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-10-12 10:30:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-12 10:30:55,313 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 78 [2020-10-12 10:30:55,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:55,315 INFO L225 Difference]: With dead ends: 122 [2020-10-12 10:30:55,316 INFO L226 Difference]: Without dead ends: 120 [2020-10-12 10:30:55,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 18 SyntacticMatches, 7 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=549, Invalid=4143, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 10:30:55,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-12 10:30:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2020-10-12 10:30:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-12 10:30:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-10-12 10:30:55,332 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 78 [2020-10-12 10:30:55,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:55,332 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-10-12 10:30:55,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 10:30:55,333 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-10-12 10:30:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 10:30:55,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:55,334 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:55,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 10:30:55,334 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:55,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:55,334 INFO L82 PathProgramCache]: Analyzing trace with hash -348567407, now seen corresponding path program 14 times [2020-10-12 10:30:55,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:55,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058824467] [2020-10-12 10:30:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:55,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:55,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:55,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:55,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:56,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:00,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:00,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 10:31:00,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 10:31:00,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:31:00,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 10:31:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:31:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 10:31:00,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:01,057 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-12 10:31:01,330 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-10-12 10:31:01,510 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-12 10:31:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:02,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:31:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:31:02,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:31:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:31:02,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:02,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:31:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:02,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:31:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:02,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 36 proven. 127 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 10:31:02,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058824467] [2020-10-12 10:31:02,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:02,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 10:31:02,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756680539] [2020-10-12 10:31:02,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 10:31:02,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:02,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 10:31:02,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:31:02,183 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 28 states. [2020-10-12 10:31:04,156 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-10-12 10:31:06,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:06,389 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-12 10:31:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 10:31:06,390 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 82 [2020-10-12 10:31:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:06,391 INFO L225 Difference]: With dead ends: 124 [2020-10-12 10:31:06,391 INFO L226 Difference]: Without dead ends: 122 [2020-10-12 10:31:06,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=490, Invalid=3670, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 10:31:06,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-12 10:31:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2020-10-12 10:31:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-12 10:31:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2020-10-12 10:31:06,405 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 82 [2020-10-12 10:31:06,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:06,405 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2020-10-12 10:31:06,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 10:31:06,405 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2020-10-12 10:31:06,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 10:31:06,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:06,406 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:06,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 10:31:06,406 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:06,407 INFO L82 PathProgramCache]: Analyzing trace with hash 662312719, now seen corresponding path program 15 times [2020-10-12 10:31:06,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:06,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871551730] [2020-10-12 10:31:06,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:06,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:06,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 10:31:06,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-12 10:31:06,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:31:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:31:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 10:31:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:06,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:06,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:06,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:06,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:06,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:06,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:31:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:06,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:06,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:06,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:06,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:06,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:06,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:31:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:06,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:06,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:06,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:06,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:06,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:06,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:31:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:06,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:06,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:06,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:06,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:06,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:31:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:06,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:06,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:06,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:06,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:06,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:06,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:06,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:06,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:06,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:06,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:31:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:06,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:06,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:06,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:06,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:06,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:06,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:06,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:06,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:31:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:06,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:06,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:06,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:06,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:06,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:06,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:06,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:06,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:06,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 63 proven. 87 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 10:31:06,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871551730] [2020-10-12 10:31:06,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:06,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:31:06,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239442353] [2020-10-12 10:31:06,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:31:06,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:06,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:31:06,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:31:06,988 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand 14 states. [2020-10-12 10:31:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:07,519 INFO L93 Difference]: Finished difference Result 228 states and 249 transitions. [2020-10-12 10:31:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 10:31:07,523 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-12 10:31:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:07,525 INFO L225 Difference]: With dead ends: 228 [2020-10-12 10:31:07,525 INFO L226 Difference]: Without dead ends: 130 [2020-10-12 10:31:07,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:31:07,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-12 10:31:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2020-10-12 10:31:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-12 10:31:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-10-12 10:31:07,552 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 86 [2020-10-12 10:31:07,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:07,552 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-10-12 10:31:07,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:31:07,552 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-10-12 10:31:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 10:31:07,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:07,553 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:07,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 10:31:07,554 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:07,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1052914422, now seen corresponding path program 16 times [2020-10-12 10:31:07,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:07,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896127039] [2020-10-12 10:31:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:07,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:07,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:07,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 10:31:12,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:31:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:31:12,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 10:31:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:31:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 10:31:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:13,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:13,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:13,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:13,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:13,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:13,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:13,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:13,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:13,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:13,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:13,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:31:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:13,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:13,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:13,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:13,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:13,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:13,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:13,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:13,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:31:13,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:31:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:31:13,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:13,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:13,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:13,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:13,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:13,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:13,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:13,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:13,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:13,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:31:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:13,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:13,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:13,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:13,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:13,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:31:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:13,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:13,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:31:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:13,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 33 proven. 157 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 10:31:13,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896127039] [2020-10-12 10:31:13,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:13,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 10:31:13,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748540769] [2020-10-12 10:31:13,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 10:31:13,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:13,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 10:31:13,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:31:13,575 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 28 states. [2020-10-12 10:31:18,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:18,175 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2020-10-12 10:31:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-12 10:31:18,176 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 90 [2020-10-12 10:31:18,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:18,181 INFO L225 Difference]: With dead ends: 138 [2020-10-12 10:31:18,181 INFO L226 Difference]: Without dead ends: 136 [2020-10-12 10:31:18,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 21 SyntacticMatches, 9 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=649, Invalid=5051, Unknown=0, NotChecked=0, Total=5700 [2020-10-12 10:31:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-12 10:31:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 130. [2020-10-12 10:31:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-12 10:31:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2020-10-12 10:31:18,210 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 90 [2020-10-12 10:31:18,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:18,211 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2020-10-12 10:31:18,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 10:31:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2020-10-12 10:31:18,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 10:31:18,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:18,216 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:18,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 10:31:18,216 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:18,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:18,216 INFO L82 PathProgramCache]: Analyzing trace with hash -294851389, now seen corresponding path program 17 times [2020-10-12 10:31:18,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:18,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137697981] [2020-10-12 10:31:18,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:18,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 10:31:23,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:31:23,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 10:31:23,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 10:31:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:31:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 10:31:23,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:24,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:24,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:24,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:24,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:31:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:24,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:24,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:31:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:24,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:24,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:31:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:24,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:24,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:31:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:24,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:24,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:24,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:31:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:24,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:24,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:31:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:31:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:31:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:24,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:24,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:24,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 54 proven. 165 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 10:31:24,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137697981] [2020-10-12 10:31:24,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:24,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 10:31:24,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399419975] [2020-10-12 10:31:24,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 10:31:24,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:24,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 10:31:24,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:31:24,400 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand 28 states. [2020-10-12 10:31:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:28,134 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2020-10-12 10:31:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-12 10:31:28,135 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 94 [2020-10-12 10:31:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:28,136 INFO L225 Difference]: With dead ends: 140 [2020-10-12 10:31:28,136 INFO L226 Difference]: Without dead ends: 138 [2020-10-12 10:31:28,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 9 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=586, Invalid=3970, Unknown=0, NotChecked=0, Total=4556 [2020-10-12 10:31:28,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-12 10:31:28,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2020-10-12 10:31:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-12 10:31:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2020-10-12 10:31:28,153 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 94 [2020-10-12 10:31:28,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:28,153 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2020-10-12 10:31:28,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 10:31:28,153 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2020-10-12 10:31:28,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 10:31:28,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:28,154 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:28,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 10:31:28,155 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:28,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:28,155 INFO L82 PathProgramCache]: Analyzing trace with hash -648828991, now seen corresponding path program 18 times [2020-10-12 10:31:28,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:28,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148479581] [2020-10-12 10:31:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:28,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:28,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:28,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:28,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 10:31:28,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-10-12 10:31:28,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:31:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:31:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 10:31:28,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:29,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:29,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:29,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:29,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:29,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:29,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:31:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:29,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:29,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:29,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:29,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:29,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:29,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:29,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:29,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:29,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:29,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:31:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:29,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:29,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:31:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:29,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:29,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:29,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:29,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:31:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:29,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:29,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:29,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:31:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:29,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:29,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:29,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:29,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 112 proven. 91 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-12 10:31:29,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148479581] [2020-10-12 10:31:29,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:29,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:31:29,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755608899] [2020-10-12 10:31:29,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:31:29,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:29,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:31:29,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:31:29,104 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand 14 states. [2020-10-12 10:31:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:29,707 INFO L93 Difference]: Finished difference Result 256 states and 279 transitions. [2020-10-12 10:31:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 10:31:29,708 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 98 [2020-10-12 10:31:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:29,709 INFO L225 Difference]: With dead ends: 256 [2020-10-12 10:31:29,710 INFO L226 Difference]: Without dead ends: 146 [2020-10-12 10:31:29,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:31:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-12 10:31:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 138. [2020-10-12 10:31:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-12 10:31:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2020-10-12 10:31:29,729 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 98 [2020-10-12 10:31:29,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:29,729 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2020-10-12 10:31:29,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:31:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2020-10-12 10:31:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 10:31:29,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:29,731 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:29,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 10:31:29,731 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1688681788, now seen corresponding path program 19 times [2020-10-12 10:31:29,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:29,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767673214] [2020-10-12 10:31:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:30,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:30,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:34,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:34,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 10:31:34,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:31:34,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 10:31:34,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 10:31:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:31:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 10:31:34,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:35,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:35,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:35,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:35,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:35,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:31:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:35,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:35,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:35,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:35,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:35,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:35,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:31:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:31:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:35,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:31:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:35,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:35,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:35,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:35,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:35,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:31:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:35,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:35,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:35,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:35,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:35,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:35,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:35,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:31:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:35,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:35,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:35,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:35,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:31:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:35,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:35,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:35,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:35,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:35,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:35,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:35,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:35,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:35,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:35,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:31:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:35,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:35,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:35,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:35,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:35,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:35,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:35,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:35,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 35 proven. 215 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-12 10:31:35,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767673214] [2020-10-12 10:31:35,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:35,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 10:31:35,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006219986] [2020-10-12 10:31:35,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 10:31:35,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:35,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 10:31:35,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=807, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:31:35,942 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand 30 states. [2020-10-12 10:31:41,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:41,605 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-10-12 10:31:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-12 10:31:41,606 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 102 [2020-10-12 10:31:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:41,608 INFO L225 Difference]: With dead ends: 154 [2020-10-12 10:31:41,608 INFO L226 Difference]: Without dead ends: 152 [2020-10-12 10:31:41,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 25 SyntacticMatches, 11 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=731, Invalid=5749, Unknown=0, NotChecked=0, Total=6480 [2020-10-12 10:31:41,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-12 10:31:41,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2020-10-12 10:31:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-12 10:31:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 157 transitions. [2020-10-12 10:31:41,631 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 157 transitions. Word has length 102 [2020-10-12 10:31:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:41,631 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 157 transitions. [2020-10-12 10:31:41,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 10:31:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 157 transitions. [2020-10-12 10:31:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 10:31:41,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:41,633 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:41,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 10:31:41,633 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:41,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:41,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1162977675, now seen corresponding path program 20 times [2020-10-12 10:31:41,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:41,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101010838] [2020-10-12 10:31:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:41,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:46,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 10:31:46,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 10:31:46,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 10:31:46,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:46,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-12 10:31:46,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:31:46,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 10:31:46,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:47,465 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-12 10:31:47,683 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-10-12 10:31:47,877 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-10-12 10:31:48,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:48,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:31:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:31:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:31:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:31:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:31:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:48,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 10:31:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:48,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 54 proven. 229 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-12 10:31:48,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101010838] [2020-10-12 10:31:48,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:48,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 10:31:48,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076392722] [2020-10-12 10:31:48,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 10:31:48,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:48,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 10:31:48,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=975, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 10:31:48,857 INFO L87 Difference]: Start difference. First operand 146 states and 157 transitions. Second operand 33 states. [2020-10-12 10:31:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:55,171 INFO L93 Difference]: Finished difference Result 158 states and 169 transitions. [2020-10-12 10:31:55,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-12 10:31:55,174 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 106 [2020-10-12 10:31:55,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:55,176 INFO L225 Difference]: With dead ends: 158 [2020-10-12 10:31:55,176 INFO L226 Difference]: Without dead ends: 156 [2020-10-12 10:31:55,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 24 SyntacticMatches, 10 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=758, Invalid=5722, Unknown=0, NotChecked=0, Total=6480 [2020-10-12 10:31:55,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-12 10:31:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 146. [2020-10-12 10:31:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-12 10:31:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 157 transitions. [2020-10-12 10:31:55,200 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 157 transitions. Word has length 106 [2020-10-12 10:31:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:55,201 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 157 transitions. [2020-10-12 10:31:55,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 10:31:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 157 transitions. [2020-10-12 10:31:55,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 10:31:55,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:55,203 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:55,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 10:31:55,203 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:55,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:55,203 INFO L82 PathProgramCache]: Analyzing trace with hash -374684173, now seen corresponding path program 21 times [2020-10-12 10:31:55,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:55,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231428746] [2020-10-12 10:31:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 10:31:56,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:56,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-12 10:31:56,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:31:56,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:31:56,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 10:31:56,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:56,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:56,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:56,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:31:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:31:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:31:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:56,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:31:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:56,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:31:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:56,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:31:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:56,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:56,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 10:31:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 144 proven. 120 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 10:31:56,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231428746] [2020-10-12 10:31:56,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:56,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:31:56,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346485181] [2020-10-12 10:31:56,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:31:56,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:56,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:31:56,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:31:56,332 INFO L87 Difference]: Start difference. First operand 146 states and 157 transitions. Second operand 15 states. [2020-10-12 10:31:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:57,106 INFO L93 Difference]: Finished difference Result 276 states and 299 transitions. [2020-10-12 10:31:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 10:31:57,109 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2020-10-12 10:31:57,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:57,111 INFO L225 Difference]: With dead ends: 276 [2020-10-12 10:31:57,111 INFO L226 Difference]: Without dead ends: 158 [2020-10-12 10:31:57,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-12 10:31:57,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-12 10:31:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2020-10-12 10:31:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-12 10:31:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 161 transitions. [2020-10-12 10:31:57,137 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 161 transitions. Word has length 110 [2020-10-12 10:31:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:57,138 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 161 transitions. [2020-10-12 10:31:57,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:31:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 161 transitions. [2020-10-12 10:31:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 10:31:57,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:57,139 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:57,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 10:31:57,140 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:57,140 INFO L82 PathProgramCache]: Analyzing trace with hash -331678994, now seen corresponding path program 22 times [2020-10-12 10:31:57,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:57,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944604254] [2020-10-12 10:31:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:57,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:57,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:57,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:02,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:02,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 10:32:02,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:32:02,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:32:02,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-12 10:32:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:32:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 10:32:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:03,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:03,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:03,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:32:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:03,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:32:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:03,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:03,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:03,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:03,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:03,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:32:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:03,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:03,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:32:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:03,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:03,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:03,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:32:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:03,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:03,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:32:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:03,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:03,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:03,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 10:32:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:03,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:03,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:03,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-12 10:32:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:03,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:03,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 46 proven. 272 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-12 10:32:03,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944604254] [2020-10-12 10:32:03,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:03,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 10:32:03,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112956182] [2020-10-12 10:32:03,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 10:32:03,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:03,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 10:32:03,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:32:03,677 INFO L87 Difference]: Start difference. First operand 150 states and 161 transitions. Second operand 30 states. [2020-10-12 10:32:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:10,414 INFO L93 Difference]: Finished difference Result 168 states and 182 transitions. [2020-10-12 10:32:10,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-12 10:32:10,415 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2020-10-12 10:32:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:10,417 INFO L225 Difference]: With dead ends: 168 [2020-10-12 10:32:10,418 INFO L226 Difference]: Without dead ends: 166 [2020-10-12 10:32:10,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 28 SyntacticMatches, 14 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=795, Invalid=6177, Unknown=0, NotChecked=0, Total=6972 [2020-10-12 10:32:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-12 10:32:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 158. [2020-10-12 10:32:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-12 10:32:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 171 transitions. [2020-10-12 10:32:10,439 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 171 transitions. Word has length 114 [2020-10-12 10:32:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:10,440 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 171 transitions. [2020-10-12 10:32:10,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 10:32:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 171 transitions. [2020-10-12 10:32:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 10:32:10,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:10,442 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:10,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 10:32:10,442 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:10,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1130683815, now seen corresponding path program 23 times [2020-10-12 10:32:10,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:10,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903238489] [2020-10-12 10:32:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:10,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:10,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:15,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-12 10:32:15,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 10:32:15,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:32:15,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-12 10:32:15,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:32:15,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 10:32:15,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:16,625 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-10-12 10:32:16,847 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-10-12 10:32:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:17,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:17,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:17,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:32:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:17,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:17,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:17,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:17,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:17,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:32:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:17,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:17,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:17,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:17,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:32:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:17,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:17,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:17,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:17,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:17,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:32:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:17,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:17,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:17,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:32:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:17,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:17,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:17,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:17,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:32:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:17,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:17,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:17,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:17,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:17,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 10:32:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:17,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:17,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:17,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:17,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:17,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-12 10:32:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:17,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:17,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:17,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:17,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 53 proven. 302 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-12 10:32:17,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903238489] [2020-10-12 10:32:17,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:17,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 10:32:17,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675837903] [2020-10-12 10:32:17,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 10:32:17,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:17,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 10:32:17,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1043, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 10:32:17,776 INFO L87 Difference]: Start difference. First operand 158 states and 171 transitions. Second operand 34 states. [2020-10-12 10:32:21,032 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-12 10:32:21,764 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-12 10:32:22,156 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-12 10:32:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:25,736 INFO L93 Difference]: Finished difference Result 170 states and 184 transitions. [2020-10-12 10:32:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-12 10:32:25,737 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 118 [2020-10-12 10:32:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:25,740 INFO L225 Difference]: With dead ends: 170 [2020-10-12 10:32:25,740 INFO L226 Difference]: Without dead ends: 168 [2020-10-12 10:32:25,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 27 SyntacticMatches, 13 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=826, Invalid=6484, Unknown=0, NotChecked=0, Total=7310 [2020-10-12 10:32:25,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-12 10:32:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 154. [2020-10-12 10:32:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-12 10:32:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 166 transitions. [2020-10-12 10:32:25,762 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 166 transitions. Word has length 118 [2020-10-12 10:32:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:25,763 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 166 transitions. [2020-10-12 10:32:25,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 10:32:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 166 transitions. [2020-10-12 10:32:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 10:32:25,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:25,765 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:25,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 10:32:25,765 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:25,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:25,766 INFO L82 PathProgramCache]: Analyzing trace with hash -876170843, now seen corresponding path program 24 times [2020-10-12 10:32:25,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:25,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328878276] [2020-10-12 10:32:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:26,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 10:32:26,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:32:26,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-10-12 10:32:26,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 10:32:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:32:26,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 10:32:26,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:27,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:27,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:27,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:32:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:27,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:27,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:27,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:32:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:27,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:27,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:32:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:27,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:27,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:32:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:27,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:27,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:32:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:27,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:32:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:27,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:27,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 10:32:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:27,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:27,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-12 10:32:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-12 10:32:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:27,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:27,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:27,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 180 proven. 153 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-12 10:32:27,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328878276] [2020-10-12 10:32:27,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:27,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:32:27,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097178535] [2020-10-12 10:32:27,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:32:27,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:27,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:32:27,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:32:27,093 INFO L87 Difference]: Start difference. First operand 154 states and 166 transitions. Second operand 16 states. [2020-10-12 10:32:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:28,038 INFO L93 Difference]: Finished difference Result 288 states and 313 transitions. [2020-10-12 10:32:28,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 10:32:28,039 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 122 [2020-10-12 10:32:28,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:28,041 INFO L225 Difference]: With dead ends: 288 [2020-10-12 10:32:28,041 INFO L226 Difference]: Without dead ends: 166 [2020-10-12 10:32:28,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:32:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-12 10:32:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 158. [2020-10-12 10:32:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-12 10:32:28,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2020-10-12 10:32:28,065 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 122 [2020-10-12 10:32:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:28,065 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2020-10-12 10:32:28,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:32:28,066 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2020-10-12 10:32:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 10:32:28,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:28,069 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:28,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 10:32:28,069 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:28,070 INFO L82 PathProgramCache]: Analyzing trace with hash -299874784, now seen corresponding path program 25 times [2020-10-12 10:32:28,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:28,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804451678] [2020-10-12 10:32:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:28,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:33,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:33,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 10:32:33,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:32:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:32:33,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-12 10:32:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:32:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 10:32:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:34,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:34,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:34,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:34,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:32:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:32:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:32:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:32:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:32:34,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:34,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:32:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:32:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 10:32:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-12 10:32:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:32:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 54 proven. 340 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-12 10:32:35,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804451678] [2020-10-12 10:32:35,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:35,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 10:32:35,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761391420] [2020-10-12 10:32:35,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 10:32:35,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:35,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 10:32:35,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=810, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:32:35,020 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand 30 states. [2020-10-12 10:32:38,213 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-12 10:32:38,806 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-12 10:32:39,219 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-12 10:32:39,467 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-12 10:32:39,672 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-12 10:32:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:43,022 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2020-10-12 10:32:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-12 10:32:43,030 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 126 [2020-10-12 10:32:43,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:43,031 INFO L225 Difference]: With dead ends: 180 [2020-10-12 10:32:43,031 INFO L226 Difference]: Without dead ends: 178 [2020-10-12 10:32:43,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 32 SyntacticMatches, 17 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1532 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=916, Invalid=7094, Unknown=0, NotChecked=0, Total=8010 [2020-10-12 10:32:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-12 10:32:43,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 166. [2020-10-12 10:32:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-12 10:32:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 180 transitions. [2020-10-12 10:32:43,068 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 180 transitions. Word has length 126 [2020-10-12 10:32:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:43,068 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 180 transitions. [2020-10-12 10:32:43,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 10:32:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 180 transitions. [2020-10-12 10:32:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 10:32:43,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:43,070 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:43,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 10:32:43,070 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash -208164263, now seen corresponding path program 26 times [2020-10-12 10:32:43,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:43,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527497957] [2020-10-12 10:32:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:43,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:48,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 10:32:48,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 10:32:48,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:32:48,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-12 10:32:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:32:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 10:32:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:49,460 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-10-12 10:32:50,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:50,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:50,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:32:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:50,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:50,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:50,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:50,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:50,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:32:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:50,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:50,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:50,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:32:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:50,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:50,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:50,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:32:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:50,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:50,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:50,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:50,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:32:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:50,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:50,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 10:32:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:50,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:50,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:50,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:50,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:50,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:50,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-12 10:32:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:50,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:50,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:50,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:50,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:50,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:50,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-12 10:32:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:50,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:50,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:50,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:50,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:50,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:50,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 10:32:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:50,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:50,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:50,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:50,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 55 proven. 380 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-12 10:32:50,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527497957] [2020-10-12 10:32:50,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:50,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 10:32:50,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261263479] [2020-10-12 10:32:50,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 10:32:50,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:50,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 10:32:50,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1177, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 10:32:50,962 INFO L87 Difference]: Start difference. First operand 166 states and 180 transitions. Second operand 36 states. [2020-10-12 10:32:52,504 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-12 10:32:53,170 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-12 10:32:53,885 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 10:32:54,629 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-12 10:32:55,355 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-12 10:32:55,920 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-12 10:32:56,546 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-12 10:32:56,809 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-12 10:32:57,145 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-10-12 10:32:57,478 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-12 10:32:57,941 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-12 10:33:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:02,322 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2020-10-12 10:33:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-12 10:33:02,323 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 130 [2020-10-12 10:33:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:02,325 INFO L225 Difference]: With dead ends: 182 [2020-10-12 10:33:02,325 INFO L226 Difference]: Without dead ends: 180 [2020-10-12 10:33:02,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 31 SyntacticMatches, 14 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=920, Invalid=7636, Unknown=0, NotChecked=0, Total=8556 [2020-10-12 10:33:02,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-12 10:33:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 162. [2020-10-12 10:33:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 10:33:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 175 transitions. [2020-10-12 10:33:02,348 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 175 transitions. Word has length 130 [2020-10-12 10:33:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:02,348 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 175 transitions. [2020-10-12 10:33:02,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 10:33:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 175 transitions. [2020-10-12 10:33:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 10:33:02,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:02,350 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:02,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 10:33:02,350 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:02,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:02,351 INFO L82 PathProgramCache]: Analyzing trace with hash 445557463, now seen corresponding path program 27 times [2020-10-12 10:33:02,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:02,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421557032] [2020-10-12 10:33:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:02,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 10:33:03,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:33:03,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1339 [2020-10-12 10:33:03,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 10:33:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:33:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 10:33:03,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:33:03,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:03,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:33:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:03,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:33:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:03,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:03,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:33:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:03,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:33:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:03,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:03,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:33:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:03,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:03,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:03,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:33:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:03,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:03,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 10:33:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:03,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:03,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-12 10:33:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:03,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:03,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:33:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:03,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-12 10:33:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:03,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:03,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:03,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:03,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:03,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:03,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 220 proven. 190 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-12 10:33:03,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421557032] [2020-10-12 10:33:03,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:03,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:33:03,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928670894] [2020-10-12 10:33:03,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:33:03,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:03,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:33:03,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:33:03,990 INFO L87 Difference]: Start difference. First operand 162 states and 175 transitions. Second operand 17 states. [2020-10-12 10:33:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:05,137 INFO L93 Difference]: Finished difference Result 300 states and 327 transitions. [2020-10-12 10:33:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 10:33:05,138 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2020-10-12 10:33:05,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:05,141 INFO L225 Difference]: With dead ends: 300 [2020-10-12 10:33:05,141 INFO L226 Difference]: Without dead ends: 174 [2020-10-12 10:33:05,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:33:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-12 10:33:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2020-10-12 10:33:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-12 10:33:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2020-10-12 10:33:05,183 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 134 [2020-10-12 10:33:05,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:05,183 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2020-10-12 10:33:05,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:33:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2020-10-12 10:33:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 10:33:05,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:05,185 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:05,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 10:33:05,185 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:05,185 INFO L82 PathProgramCache]: Analyzing trace with hash -669098286, now seen corresponding path program 28 times [2020-10-12 10:33:05,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:05,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867618044] [2020-10-12 10:33:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:10,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 10:33:10,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:33:10,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 10:33:10,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:10,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-12 10:33:10,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:33:10,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 10:33:10,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:33:12,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:12,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:33:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:12,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:12,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:12,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:33:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:12,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:12,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:33:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:12,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:12,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:33:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:12,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:12,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:33:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:12,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:12,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:33:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:33:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 10:33:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:12,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:12,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:12,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-12 10:33:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:12,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:12,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:12,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-12 10:33:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:12,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:12,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:12,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 10:33:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:12,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:12,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-12 10:33:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:12,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:12,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:12,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 62 proven. 416 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 10:33:12,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867618044] [2020-10-12 10:33:12,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:12,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 10:33:12,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171693505] [2020-10-12 10:33:12,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 10:33:12,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:12,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 10:33:12,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:33:12,295 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand 31 states. [2020-10-12 10:33:15,573 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 10:33:16,161 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-12 10:33:16,817 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-12 10:33:17,272 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-12 10:33:17,562 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-12 10:33:17,782 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-12 10:33:18,138 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-12 10:33:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:22,309 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2020-10-12 10:33:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-12 10:33:22,311 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 138 [2020-10-12 10:33:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:22,312 INFO L225 Difference]: With dead ends: 192 [2020-10-12 10:33:22,312 INFO L226 Difference]: Without dead ends: 190 [2020-10-12 10:33:22,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 35 SyntacticMatches, 20 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1046, Invalid=8074, Unknown=0, NotChecked=0, Total=9120 [2020-10-12 10:33:22,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-12 10:33:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 174. [2020-10-12 10:33:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-12 10:33:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 189 transitions. [2020-10-12 10:33:22,348 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 189 transitions. Word has length 138 [2020-10-12 10:33:22,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:22,348 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 189 transitions. [2020-10-12 10:33:22,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 10:33:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 189 transitions. [2020-10-12 10:33:22,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 10:33:22,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:22,349 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:22,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 10:33:22,350 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:22,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:22,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1108474741, now seen corresponding path program 29 times [2020-10-12 10:33:22,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:22,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774038965] [2020-10-12 10:33:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:22,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:27,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 10:33:27,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:33:27,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:33:27,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:27,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-12 10:33:27,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:33:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 10:33:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:33:29,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:29,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:33:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:29,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:29,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:33:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:29,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:29,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:29,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:33:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:29,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:29,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:33:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:29,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:29,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:29,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:33:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:29,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:29,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:33:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:33:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 10:33:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:29,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:29,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-12 10:33:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:29,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:29,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:29,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:29,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:33:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:29,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:29,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-12 10:33:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 10:33:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:29,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:29,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:29,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:29,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:29,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 77 proven. 446 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 10:33:29,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774038965] [2020-10-12 10:33:29,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:29,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 10:33:29,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515194151] [2020-10-12 10:33:29,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 10:33:29,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:29,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 10:33:29,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1179, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 10:33:29,771 INFO L87 Difference]: Start difference. First operand 174 states and 189 transitions. Second operand 36 states. [2020-10-12 10:33:32,914 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-12 10:33:33,575 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-12 10:33:33,850 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-12 10:33:34,261 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-12 10:33:34,553 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-12 10:33:34,988 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-10-12 10:33:35,285 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-12 10:33:35,541 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-12 10:33:35,896 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-12 10:33:36,206 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61