/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:38:12,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:38:12,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:38:13,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:38:13,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:38:13,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:38:13,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:38:13,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:38:13,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:38:13,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:38:13,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:38:13,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:38:13,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:38:13,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:38:13,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:38:13,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:38:13,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:38:13,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:38:13,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:38:13,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:38:13,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:38:13,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:38:13,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:38:13,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:38:13,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:38:13,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:38:13,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:38:13,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:38:13,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:38:13,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:38:13,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:38:13,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:38:13,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:38:13,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:38:13,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:38:13,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:38:13,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:38:13,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:38:13,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:38:13,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:38:13,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:38:13,068 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 [2020-10-14 08:38:13,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:38:13,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:38:13,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:38:13,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:38:13,092 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:38:13,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:38:13,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:38:13,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:38:13,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:38:13,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:38:13,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:38:13,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:38:13,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:38:13,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:38:13,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:38:13,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:38:13,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:38:13,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:38:13,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:38:13,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:38:13,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:38:13,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:38:13,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:38:13,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:38:13,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:38:13,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:38:13,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:38:13,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:38:13,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:38:13,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:38:13,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:38:13,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:38:13,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:38:13,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:38:13,449 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:38:13,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:38:13,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50a25a2fb/d6b31af9cbeb4842acf2fdc5ab002c2f/FLAGc8cb20b54 [2020-10-14 08:38:14,040 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:38:14,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:38:14,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50a25a2fb/d6b31af9cbeb4842acf2fdc5ab002c2f/FLAGc8cb20b54 [2020-10-14 08:38:14,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50a25a2fb/d6b31af9cbeb4842acf2fdc5ab002c2f [2020-10-14 08:38:14,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:38:14,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:38:14,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:38:14,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:38:14,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:38:14,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:38:14" (1/1) ... [2020-10-14 08:38:14,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69dafcb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:14, skipping insertion in model container [2020-10-14 08:38:14,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:38:14" (1/1) ... [2020-10-14 08:38:14,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:38:14,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:38:15,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:38:15,026 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:38:15,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:38:15,181 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:38:15,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:15 WrapperNode [2020-10-14 08:38:15,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:38:15,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:38:15,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:38:15,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:38:15,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:15" (1/1) ... [2020-10-14 08:38:15,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:15" (1/1) ... [2020-10-14 08:38:15,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:15" (1/1) ... [2020-10-14 08:38:15,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:15" (1/1) ... [2020-10-14 08:38:15,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:15" (1/1) ... [2020-10-14 08:38:15,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:15" (1/1) ... [2020-10-14 08:38:15,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:15" (1/1) ... [2020-10-14 08:38:15,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:38:15,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:38:15,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:38:15,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:38:15,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:15" (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 [2020-10-14 08:38:15,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:38:15,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:38:15,375 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:38:15,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:38:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:38:15,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:38:15,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:38:15,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:38:15,378 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:38:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:38:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:38:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:38:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:38:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:38:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:38:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:38:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:38:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:38:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:38:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:38:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:38:16,560 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:38:16,560 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:38:16,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:38:16 BoogieIcfgContainer [2020-10-14 08:38:16,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:38:16,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:38:16,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:38:16,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:38:16,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:38:14" (1/3) ... [2020-10-14 08:38:16,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fe9e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:38:16, skipping insertion in model container [2020-10-14 08:38:16,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:15" (2/3) ... [2020-10-14 08:38:16,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fe9e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:38:16, skipping insertion in model container [2020-10-14 08:38:16,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:38:16" (3/3) ... [2020-10-14 08:38:16,576 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:38:16,587 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:38:16,596 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-14 08:38:16,611 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-14 08:38:16,640 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:38:16,640 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:38:16,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:38:16,641 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:38:16,641 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:38:16,641 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:38:16,641 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:38:16,642 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:38:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-14 08:38:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 08:38:16,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:16,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:16,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:16,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1846019956, now seen corresponding path program 1 times [2020-10-14 08:38:16,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:16,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112709053] [2020-10-14 08:38:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:17,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:17,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:17,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:18,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:19,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:21,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:21,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:22,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 08:38:22,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:38:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 08:38:22,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:22,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:38:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:38:22,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:38:22,348 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:38:22,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:22,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:22,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:22,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:38:22,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:22,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:22,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112709053] [2020-10-14 08:38:22,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:22,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:38:22,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041280596] [2020-10-14 08:38:22,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:38:22,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:22,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:38:22,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:38:22,437 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 7 states. [2020-10-14 08:38:22,746 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:38:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:24,377 INFO L93 Difference]: Finished difference Result 693 states and 1116 transitions. [2020-10-14 08:38:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:38:24,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-14 08:38:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:24,399 INFO L225 Difference]: With dead ends: 693 [2020-10-14 08:38:24,399 INFO L226 Difference]: Without dead ends: 548 [2020-10-14 08:38:24,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:38:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-10-14 08:38:24,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 259. [2020-10-14 08:38:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-14 08:38:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 330 transitions. [2020-10-14 08:38:24,481 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 330 transitions. Word has length 50 [2020-10-14 08:38:24,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:24,482 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 330 transitions. [2020-10-14 08:38:24,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:38:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 330 transitions. [2020-10-14 08:38:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 08:38:24,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:24,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:24,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:38:24,486 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:24,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:24,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1477961815, now seen corresponding path program 1 times [2020-10-14 08:38:24,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:24,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806873372] [2020-10-14 08:38:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:24,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:24,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:24,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:24,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:25,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:25,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:25,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:26,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:27,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:27,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:29,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:29,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 08:38:29,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 08:38:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:38:29,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:29,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:38:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:38:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:38:29,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:29,746 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:38:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:29,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:29,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:29,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:29,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 08:38:29,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:29,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:38:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:29,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806873372] [2020-10-14 08:38:29,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:29,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:38:29,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880772490] [2020-10-14 08:38:29,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:38:29,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:29,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:38:29,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:38:29,798 INFO L87 Difference]: Start difference. First operand 259 states and 330 transitions. Second operand 6 states. [2020-10-14 08:38:29,983 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:38:30,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:30,639 INFO L93 Difference]: Finished difference Result 389 states and 514 transitions. [2020-10-14 08:38:30,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:38:30,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-14 08:38:30,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:30,642 INFO L225 Difference]: With dead ends: 389 [2020-10-14 08:38:30,642 INFO L226 Difference]: Without dead ends: 234 [2020-10-14 08:38:30,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:30,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-14 08:38:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-14 08:38:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-14 08:38:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 299 transitions. [2020-10-14 08:38:30,668 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 299 transitions. Word has length 50 [2020-10-14 08:38:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:30,669 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 299 transitions. [2020-10-14 08:38:30,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:38:30,669 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 299 transitions. [2020-10-14 08:38:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:38:30,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:30,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:30,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:38:30,672 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:30,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:30,673 INFO L82 PathProgramCache]: Analyzing trace with hash -870789754, now seen corresponding path program 1 times [2020-10-14 08:38:30,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:30,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627429769] [2020-10-14 08:38:30,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:30,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:32,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:35,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:38:35,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:38:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:38:35,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:35,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:38:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:38:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 08:38:35,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:35,940 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:38:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:35,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:35,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:35,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:35,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:38:35,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:35,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:35,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627429769] [2020-10-14 08:38:35,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:35,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:38:35,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089363845] [2020-10-14 08:38:35,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:38:35,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:35,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:38:35,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:38:35,974 INFO L87 Difference]: Start difference. First operand 234 states and 299 transitions. Second operand 6 states. [2020-10-14 08:38:36,147 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 08:38:37,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:37,397 INFO L93 Difference]: Finished difference Result 992 states and 1403 transitions. [2020-10-14 08:38:37,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:38:37,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-14 08:38:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:37,405 INFO L225 Difference]: With dead ends: 992 [2020-10-14 08:38:37,405 INFO L226 Difference]: Without dead ends: 876 [2020-10-14 08:38:37,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:38:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-14 08:38:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 557. [2020-10-14 08:38:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2020-10-14 08:38:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 779 transitions. [2020-10-14 08:38:37,452 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 779 transitions. Word has length 51 [2020-10-14 08:38:37,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:37,452 INFO L479 AbstractCegarLoop]: Abstraction has 557 states and 779 transitions. [2020-10-14 08:38:37,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:38:37,452 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 779 transitions. [2020-10-14 08:38:37,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:38:37,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:37,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:37,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:38:37,456 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:37,456 INFO L82 PathProgramCache]: Analyzing trace with hash -502731613, now seen corresponding path program 1 times [2020-10-14 08:38:37,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:37,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310533199] [2020-10-14 08:38:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:37,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:41,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:41,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:41,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:42,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:38:42,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:38:42,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:38:42,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:42,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:38:42,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:42,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 08:38:42,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:42,647 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:38:42,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:42,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:42,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:42,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:38:42,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:42,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:42,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310533199] [2020-10-14 08:38:42,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:42,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:38:42,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211964026] [2020-10-14 08:38:42,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:38:42,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:42,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:38:42,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:38:42,680 INFO L87 Difference]: Start difference. First operand 557 states and 779 transitions. Second operand 7 states. [2020-10-14 08:38:42,841 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:38:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:43,580 INFO L93 Difference]: Finished difference Result 927 states and 1328 transitions. [2020-10-14 08:38:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:38:43,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-14 08:38:43,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:43,585 INFO L225 Difference]: With dead ends: 927 [2020-10-14 08:38:43,586 INFO L226 Difference]: Without dead ends: 531 [2020-10-14 08:38:43,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:38:43,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-10-14 08:38:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 507. [2020-10-14 08:38:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-14 08:38:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 715 transitions. [2020-10-14 08:38:43,636 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 715 transitions. Word has length 51 [2020-10-14 08:38:43,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:43,637 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 715 transitions. [2020-10-14 08:38:43,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:38:43,637 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 715 transitions. [2020-10-14 08:38:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:38:43,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:43,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:43,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:38:43,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:43,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1859329898, now seen corresponding path program 1 times [2020-10-14 08:38:43,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:43,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106430591] [2020-10-14 08:38:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:43,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:44,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:44,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:44,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:47,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:48,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:48,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:38:48,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:38:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:38:48,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:48,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:38:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:38:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 08:38:48,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:48,848 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:38:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:48,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:48,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:48,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:38:48,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:48,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:38:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:48,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106430591] [2020-10-14 08:38:48,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:48,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:38:48,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922257969] [2020-10-14 08:38:48,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:38:48,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:48,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:38:48,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:38:48,885 INFO L87 Difference]: Start difference. First operand 507 states and 715 transitions. Second operand 6 states. [2020-10-14 08:38:49,042 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:38:49,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:49,675 INFO L93 Difference]: Finished difference Result 1330 states and 1925 transitions. [2020-10-14 08:38:49,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:38:49,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 08:38:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:49,682 INFO L225 Difference]: With dead ends: 1330 [2020-10-14 08:38:49,682 INFO L226 Difference]: Without dead ends: 871 [2020-10-14 08:38:49,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-10-14 08:38:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 853. [2020-10-14 08:38:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-10-14 08:38:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1237 transitions. [2020-10-14 08:38:49,744 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1237 transitions. Word has length 52 [2020-10-14 08:38:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:49,745 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1237 transitions. [2020-10-14 08:38:49,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:38:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1237 transitions. [2020-10-14 08:38:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 08:38:49,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:49,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:49,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:38:49,748 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:49,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:49,748 INFO L82 PathProgramCache]: Analyzing trace with hash -2019662876, now seen corresponding path program 1 times [2020-10-14 08:38:49,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:49,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430859015] [2020-10-14 08:38:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:49,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:51,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:51,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:54,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 08:38:54,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:38:54,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:38:54,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:54,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:38:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:38:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:38:54,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:55,056 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:38:55,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:55,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:55,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:55,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 08:38:55,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:55,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:38:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:55,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430859015] [2020-10-14 08:38:55,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:55,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:55,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144041886] [2020-10-14 08:38:55,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:38:55,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:55,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:38:55,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:38:55,121 INFO L87 Difference]: Start difference. First operand 853 states and 1237 transitions. Second operand 10 states. [2020-10-14 08:38:55,314 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:38:56,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:56,434 INFO L93 Difference]: Finished difference Result 1730 states and 2561 transitions. [2020-10-14 08:38:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 08:38:56,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-14 08:38:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:56,440 INFO L225 Difference]: With dead ends: 1730 [2020-10-14 08:38:56,440 INFO L226 Difference]: Without dead ends: 990 [2020-10-14 08:38:56,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 08:38:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-10-14 08:38:56,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 474. [2020-10-14 08:38:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-10-14 08:38:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 670 transitions. [2020-10-14 08:38:56,483 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 670 transitions. Word has length 53 [2020-10-14 08:38:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:56,484 INFO L479 AbstractCegarLoop]: Abstraction has 474 states and 670 transitions. [2020-10-14 08:38:56,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:38:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 670 transitions. [2020-10-14 08:38:56,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 08:38:56,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:56,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:56,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:38:56,485 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:56,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:56,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1462230076, now seen corresponding path program 1 times [2020-10-14 08:38:56,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:56,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238891865] [2020-10-14 08:38:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:56,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:57,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:00,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:01,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 08:39:01,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 08:39:01,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:39:01,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:01,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:01,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:39:01,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:01,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:39:01,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:01,732 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:01,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:01,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:01,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:01,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 08:39:01,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:01,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:39:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:01,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238891865] [2020-10-14 08:39:01,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:01,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:01,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469066278] [2020-10-14 08:39:01,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:39:01,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:01,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:39:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:01,794 INFO L87 Difference]: Start difference. First operand 474 states and 670 transitions. Second operand 10 states. [2020-10-14 08:39:02,033 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:39:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:03,300 INFO L93 Difference]: Finished difference Result 1797 states and 2688 transitions. [2020-10-14 08:39:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 08:39:03,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-14 08:39:03,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:03,311 INFO L225 Difference]: With dead ends: 1797 [2020-10-14 08:39:03,311 INFO L226 Difference]: Without dead ends: 1792 [2020-10-14 08:39:03,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 08:39:03,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-10-14 08:39:03,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 474. [2020-10-14 08:39:03,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-10-14 08:39:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 669 transitions. [2020-10-14 08:39:03,379 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 669 transitions. Word has length 53 [2020-10-14 08:39:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:03,379 INFO L479 AbstractCegarLoop]: Abstraction has 474 states and 669 transitions. [2020-10-14 08:39:03,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:39:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 669 transitions. [2020-10-14 08:39:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:39:03,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:03,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:03,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:39:03,381 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:03,381 INFO L82 PathProgramCache]: Analyzing trace with hash -392381215, now seen corresponding path program 1 times [2020-10-14 08:39:03,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:03,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326134294] [2020-10-14 08:39:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:04,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:04,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:06,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:06,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:07,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:07,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:08,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:08,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:39:08,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:39:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:39:08,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:08,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:39:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:08,657 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:08,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:08,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:08,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:08,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:08,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326134294] [2020-10-14 08:39:08,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:08,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:08,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126137482] [2020-10-14 08:39:08,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:08,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:08,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:08,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:08,689 INFO L87 Difference]: Start difference. First operand 474 states and 669 transitions. Second operand 9 states. [2020-10-14 08:39:08,869 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:39:10,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:10,015 INFO L93 Difference]: Finished difference Result 976 states and 1430 transitions. [2020-10-14 08:39:10,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:39:10,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 08:39:10,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:10,019 INFO L225 Difference]: With dead ends: 976 [2020-10-14 08:39:10,019 INFO L226 Difference]: Without dead ends: 653 [2020-10-14 08:39:10,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:39:10,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-14 08:39:10,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 473. [2020-10-14 08:39:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-14 08:39:10,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 667 transitions. [2020-10-14 08:39:10,067 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 667 transitions. Word has length 55 [2020-10-14 08:39:10,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:10,068 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 667 transitions. [2020-10-14 08:39:10,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 667 transitions. [2020-10-14 08:39:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:39:10,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:10,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:10,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:39:10,070 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:10,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:10,070 INFO L82 PathProgramCache]: Analyzing trace with hash -836854007, now seen corresponding path program 1 times [2020-10-14 08:39:10,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:10,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922767546] [2020-10-14 08:39:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:12,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:12,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:39:12,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:39:12,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2238 [2020-10-14 08:39:12,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:12,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:12,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:12,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:12,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:39:12,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:12,537 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:12,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:12,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:12,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:12,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:12,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:12,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:12,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922767546] [2020-10-14 08:39:12,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:12,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:12,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012788170] [2020-10-14 08:39:12,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:12,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:12,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:12,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:12,570 INFO L87 Difference]: Start difference. First operand 473 states and 667 transitions. Second operand 9 states. [2020-10-14 08:39:12,726 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:39:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:13,366 INFO L93 Difference]: Finished difference Result 637 states and 919 transitions. [2020-10-14 08:39:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:39:13,366 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 08:39:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:13,370 INFO L225 Difference]: With dead ends: 637 [2020-10-14 08:39:13,370 INFO L226 Difference]: Without dead ends: 627 [2020-10-14 08:39:13,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:39:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-14 08:39:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 463. [2020-10-14 08:39:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-14 08:39:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 656 transitions. [2020-10-14 08:39:13,415 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 656 transitions. Word has length 55 [2020-10-14 08:39:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:13,415 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 656 transitions. [2020-10-14 08:39:13,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 656 transitions. [2020-10-14 08:39:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:39:13,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:13,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:13,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:39:13,417 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:13,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:13,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1891360352, now seen corresponding path program 1 times [2020-10-14 08:39:13,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:13,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136422465] [2020-10-14 08:39:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:13,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:14,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:15,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:39:15,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:39:15,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2199 [2020-10-14 08:39:15,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:15,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:39:15,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:15,861 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:15,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:15,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:15,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:15,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:15,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:15,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:15,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:15,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:15,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:15,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:15,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136422465] [2020-10-14 08:39:15,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:15,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:15,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221870937] [2020-10-14 08:39:15,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:15,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:15,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:15,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:15,889 INFO L87 Difference]: Start difference. First operand 463 states and 656 transitions. Second operand 9 states. [2020-10-14 08:39:16,067 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:39:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:16,802 INFO L93 Difference]: Finished difference Result 722 states and 1046 transitions. [2020-10-14 08:39:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:39:16,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 08:39:16,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:16,805 INFO L225 Difference]: With dead ends: 722 [2020-10-14 08:39:16,805 INFO L226 Difference]: Without dead ends: 394 [2020-10-14 08:39:16,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:39:16,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-14 08:39:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 291. [2020-10-14 08:39:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-14 08:39:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 393 transitions. [2020-10-14 08:39:16,833 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 393 transitions. Word has length 55 [2020-10-14 08:39:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:16,834 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 393 transitions. [2020-10-14 08:39:16,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:16,834 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 393 transitions. [2020-10-14 08:39:16,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:39:16,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:16,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:16,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:39:16,835 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:16,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1287156098, now seen corresponding path program 1 times [2020-10-14 08:39:16,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:16,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050282734] [2020-10-14 08:39:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:16,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:16,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:19,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:19,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:39:19,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:39:19,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3017 [2020-10-14 08:39:19,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:19,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:39:19,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:20,076 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:20,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:20,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:20,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:20,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:39:20,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:20,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:20,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:20,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050282734] [2020-10-14 08:39:20,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:20,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:20,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87901891] [2020-10-14 08:39:20,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:20,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:20,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:20,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:20,097 INFO L87 Difference]: Start difference. First operand 291 states and 393 transitions. Second operand 9 states. [2020-10-14 08:39:20,259 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:39:20,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:20,959 INFO L93 Difference]: Finished difference Result 394 states and 540 transitions. [2020-10-14 08:39:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:39:20,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 08:39:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:20,962 INFO L225 Difference]: With dead ends: 394 [2020-10-14 08:39:20,962 INFO L226 Difference]: Without dead ends: 390 [2020-10-14 08:39:20,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:39:20,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-14 08:39:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 287. [2020-10-14 08:39:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-14 08:39:20,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 389 transitions. [2020-10-14 08:39:20,990 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 389 transitions. Word has length 55 [2020-10-14 08:39:20,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:20,990 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 389 transitions. [2020-10-14 08:39:20,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:20,991 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 389 transitions. [2020-10-14 08:39:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:39:20,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:20,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:20,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:39:20,992 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:20,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1743464555, now seen corresponding path program 1 times [2020-10-14 08:39:20,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:20,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813416635] [2020-10-14 08:39:20,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:21,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:21,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:21,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:22,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:22,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:39:22,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:39:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1840 [2020-10-14 08:39:22,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:22,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:39:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:39:22,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:23,058 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:23,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:23,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:23,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:23,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:23,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:39:23,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:23,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:23,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813416635] [2020-10-14 08:39:23,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:23,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:23,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878108505] [2020-10-14 08:39:23,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:39:23,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:23,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:39:23,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:23,091 INFO L87 Difference]: Start difference. First operand 287 states and 389 transitions. Second operand 10 states. [2020-10-14 08:39:23,293 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:39:24,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:24,138 INFO L93 Difference]: Finished difference Result 401 states and 546 transitions. [2020-10-14 08:39:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:39:24,139 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-14 08:39:24,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:24,141 INFO L225 Difference]: With dead ends: 401 [2020-10-14 08:39:24,141 INFO L226 Difference]: Without dead ends: 394 [2020-10-14 08:39:24,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-14 08:39:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-14 08:39:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 287. [2020-10-14 08:39:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-14 08:39:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 388 transitions. [2020-10-14 08:39:24,170 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 388 transitions. Word has length 56 [2020-10-14 08:39:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:24,170 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 388 transitions. [2020-10-14 08:39:24,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:39:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 388 transitions. [2020-10-14 08:39:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:39:24,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:24,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:24,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:39:24,171 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:24,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:24,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1271259923, now seen corresponding path program 1 times [2020-10-14 08:39:24,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:24,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965120902] [2020-10-14 08:39:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:24,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:24,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:25,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:25,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:39:25,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:39:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-14 08:39:25,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:25,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:39:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:39:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:25,547 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:25,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:25,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:25,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:25,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:25,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:39:25,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:25,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:25,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965120902] [2020-10-14 08:39:25,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:25,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:25,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273442369] [2020-10-14 08:39:25,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:39:25,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:25,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:39:25,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:25,579 INFO L87 Difference]: Start difference. First operand 287 states and 388 transitions. Second operand 10 states. [2020-10-14 08:39:25,777 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:39:26,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:26,601 INFO L93 Difference]: Finished difference Result 648 states and 929 transitions. [2020-10-14 08:39:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:39:26,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-14 08:39:26,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:26,605 INFO L225 Difference]: With dead ends: 648 [2020-10-14 08:39:26,605 INFO L226 Difference]: Without dead ends: 461 [2020-10-14 08:39:26,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-14 08:39:26,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-10-14 08:39:26,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 287. [2020-10-14 08:39:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-14 08:39:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 387 transitions. [2020-10-14 08:39:26,628 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 387 transitions. Word has length 56 [2020-10-14 08:39:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:26,628 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 387 transitions. [2020-10-14 08:39:26,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:39:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 387 transitions. [2020-10-14 08:39:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:39:26,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:26,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:26,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:39:26,632 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:26,632 INFO L82 PathProgramCache]: Analyzing trace with hash -694501888, now seen corresponding path program 1 times [2020-10-14 08:39:26,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:26,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913642571] [2020-10-14 08:39:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:26,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:26,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:28,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:31,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:31,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:39:31,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:39:31,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4865 [2020-10-14 08:39:31,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:31,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:31,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:39:31,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:31,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:39:31,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:31,716 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:31,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:31,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:31,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:31,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:31,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:39:31,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:31,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:31,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913642571] [2020-10-14 08:39:31,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:31,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:31,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956349390] [2020-10-14 08:39:31,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:39:31,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:31,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:39:31,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:31,748 INFO L87 Difference]: Start difference. First operand 287 states and 387 transitions. Second operand 10 states. [2020-10-14 08:39:31,957 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:39:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:33,042 INFO L93 Difference]: Finished difference Result 401 states and 543 transitions. [2020-10-14 08:39:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 08:39:33,042 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-14 08:39:33,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:33,044 INFO L225 Difference]: With dead ends: 401 [2020-10-14 08:39:33,044 INFO L226 Difference]: Without dead ends: 394 [2020-10-14 08:39:33,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:39:33,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-14 08:39:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 287. [2020-10-14 08:39:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-14 08:39:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 386 transitions. [2020-10-14 08:39:33,074 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 386 transitions. Word has length 56 [2020-10-14 08:39:33,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:33,074 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 386 transitions. [2020-10-14 08:39:33,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:39:33,074 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 386 transitions. [2020-10-14 08:39:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:39:33,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:33,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:33,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:39:33,076 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:33,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:33,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2111474818, now seen corresponding path program 1 times [2020-10-14 08:39:33,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:33,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485180630] [2020-10-14 08:39:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:33,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:33,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:33,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:33,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:39:33,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:39:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-14 08:39:33,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:33,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 08:39:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 08:39:33,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:34,058 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:34,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:34,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:34,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:34,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:39:34,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:34,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:34,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:34,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485180630] [2020-10-14 08:39:34,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:34,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:39:34,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356031165] [2020-10-14 08:39:34,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 08:39:34,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:34,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 08:39:34,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:39:34,083 INFO L87 Difference]: Start difference. First operand 287 states and 386 transitions. Second operand 8 states. [2020-10-14 08:39:34,273 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:39:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:34,824 INFO L93 Difference]: Finished difference Result 297 states and 394 transitions. [2020-10-14 08:39:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:39:34,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-14 08:39:34,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:34,827 INFO L225 Difference]: With dead ends: 297 [2020-10-14 08:39:34,827 INFO L226 Difference]: Without dead ends: 279 [2020-10-14 08:39:34,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 08:39:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-14 08:39:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 269. [2020-10-14 08:39:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-14 08:39:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 366 transitions. [2020-10-14 08:39:34,859 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 366 transitions. Word has length 58 [2020-10-14 08:39:34,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:34,860 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 366 transitions. [2020-10-14 08:39:34,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 08:39:34,860 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 366 transitions. [2020-10-14 08:39:34,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:39:34,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:34,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:34,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:39:34,861 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:34,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:34,862 INFO L82 PathProgramCache]: Analyzing trace with hash -548300718, now seen corresponding path program 1 times [2020-10-14 08:39:34,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:34,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030890646] [2020-10-14 08:39:34,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:34,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:34,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:35,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:35,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:39:35,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:39:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-14 08:39:35,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:35,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 08:39:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:36,003 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:36,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:36,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:36,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:39:36,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:36,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:36,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:36,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030890646] [2020-10-14 08:39:36,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:36,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:36,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710629207] [2020-10-14 08:39:36,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:36,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:36,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:36,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:36,027 INFO L87 Difference]: Start difference. First operand 269 states and 366 transitions. Second operand 9 states. [2020-10-14 08:39:36,187 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:39:36,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:36,860 INFO L93 Difference]: Finished difference Result 352 states and 493 transitions. [2020-10-14 08:39:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:39:36,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-14 08:39:36,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:36,862 INFO L225 Difference]: With dead ends: 352 [2020-10-14 08:39:36,862 INFO L226 Difference]: Without dead ends: 346 [2020-10-14 08:39:36,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:39:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-14 08:39:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 263. [2020-10-14 08:39:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-14 08:39:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 359 transitions. [2020-10-14 08:39:36,888 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 359 transitions. Word has length 58 [2020-10-14 08:39:36,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:36,889 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 359 transitions. [2020-10-14 08:39:36,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 359 transitions. [2020-10-14 08:39:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:39:36,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:36,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:36,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:39:36,890 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:36,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:36,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1824557352, now seen corresponding path program 1 times [2020-10-14 08:39:36,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:36,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747349162] [2020-10-14 08:39:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:38,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:38,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:39:38,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:39:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-14 08:39:38,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:38,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 08:39:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:38,360 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:38,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:38,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:38,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:38,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:38,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:39:38,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:38,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:38,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:38,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747349162] [2020-10-14 08:39:38,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:38,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:38,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481872455] [2020-10-14 08:39:38,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:38,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:38,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:38,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:38,385 INFO L87 Difference]: Start difference. First operand 263 states and 359 transitions. Second operand 9 states. [2020-10-14 08:39:38,548 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:39:39,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:39,044 INFO L93 Difference]: Finished difference Result 263 states and 359 transitions. [2020-10-14 08:39:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:39:39,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-14 08:39:39,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:39,047 INFO L225 Difference]: With dead ends: 263 [2020-10-14 08:39:39,047 INFO L226 Difference]: Without dead ends: 251 [2020-10-14 08:39:39,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:39:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-14 08:39:39,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2020-10-14 08:39:39,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-14 08:39:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 346 transitions. [2020-10-14 08:39:39,083 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 346 transitions. Word has length 58 [2020-10-14 08:39:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:39,083 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 346 transitions. [2020-10-14 08:39:39,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 346 transitions. [2020-10-14 08:39:39,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 08:39:39,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:39,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:39,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:39:39,085 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:39,086 INFO L82 PathProgramCache]: Analyzing trace with hash -394206342, now seen corresponding path program 1 times [2020-10-14 08:39:39,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:39,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346558924] [2020-10-14 08:39:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:39,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:40,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:40,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:40,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:44,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:44,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 08:39:44,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:39:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:39:44,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:44,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 08:39:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 08:39:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:44,292 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:44,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:44,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:44,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:39:44,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:44,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:44,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:44,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346558924] [2020-10-14 08:39:44,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:44,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:39:44,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529517026] [2020-10-14 08:39:44,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:39:44,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:44,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:39:44,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:39:44,326 INFO L87 Difference]: Start difference. First operand 251 states and 346 transitions. Second operand 4 states. [2020-10-14 08:39:44,479 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:39:44,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:44,898 INFO L93 Difference]: Finished difference Result 559 states and 820 transitions. [2020-10-14 08:39:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:39:44,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-14 08:39:44,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:44,901 INFO L225 Difference]: With dead ends: 559 [2020-10-14 08:39:44,901 INFO L226 Difference]: Without dead ends: 397 [2020-10-14 08:39:44,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:44,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-14 08:39:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 381. [2020-10-14 08:39:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-14 08:39:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 548 transitions. [2020-10-14 08:39:44,949 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 548 transitions. Word has length 76 [2020-10-14 08:39:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:44,949 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 548 transitions. [2020-10-14 08:39:44,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:39:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 548 transitions. [2020-10-14 08:39:44,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 08:39:44,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:44,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:44,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:39:44,951 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:44,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1936730167, now seen corresponding path program 1 times [2020-10-14 08:39:44,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:44,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664000654] [2020-10-14 08:39:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:49,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:49,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 08:39:49,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:39:49,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:39:49,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:49,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:49,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:49,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 08:39:49,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 08:39:49,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:50,130 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:50,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:50,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:50,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:50,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:50,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:39:50,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:50,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:50,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664000654] [2020-10-14 08:39:50,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:50,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:39:50,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759674560] [2020-10-14 08:39:50,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:39:50,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:50,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:39:50,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:39:50,150 INFO L87 Difference]: Start difference. First operand 381 states and 548 transitions. Second operand 4 states. [2020-10-14 08:39:50,313 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:39:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:50,776 INFO L93 Difference]: Finished difference Result 933 states and 1398 transitions. [2020-10-14 08:39:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:39:50,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-14 08:39:50,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:50,779 INFO L225 Difference]: With dead ends: 933 [2020-10-14 08:39:50,779 INFO L226 Difference]: Without dead ends: 641 [2020-10-14 08:39:50,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2020-10-14 08:39:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 611. [2020-10-14 08:39:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-14 08:39:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 900 transitions. [2020-10-14 08:39:50,852 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 900 transitions. Word has length 77 [2020-10-14 08:39:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:50,853 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 900 transitions. [2020-10-14 08:39:50,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:39:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 900 transitions. [2020-10-14 08:39:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 08:39:50,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:50,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:50,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:39:50,854 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash -298372889, now seen corresponding path program 1 times [2020-10-14 08:39:50,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:50,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566730458] [2020-10-14 08:39:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:50,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:50,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:50,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:51,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:51,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:51,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:51,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:55,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:55,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 08:39:55,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:39:55,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:39:55,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:55,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:39:55,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:56,024 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:56,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:56,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:56,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:56,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:39:56,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:56,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:56,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566730458] [2020-10-14 08:39:56,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:56,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:39:56,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108555930] [2020-10-14 08:39:56,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:56,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:56,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:56,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:56,068 INFO L87 Difference]: Start difference. First operand 611 states and 900 transitions. Second operand 6 states. [2020-10-14 08:39:56,223 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:39:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:56,735 INFO L93 Difference]: Finished difference Result 1685 states and 2529 transitions. [2020-10-14 08:39:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:39:56,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-14 08:39:56,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:56,740 INFO L225 Difference]: With dead ends: 1685 [2020-10-14 08:39:56,740 INFO L226 Difference]: Without dead ends: 1163 [2020-10-14 08:39:56,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:39:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-10-14 08:39:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1161. [2020-10-14 08:39:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1161 states. [2020-10-14 08:39:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1707 transitions. [2020-10-14 08:39:56,881 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1707 transitions. Word has length 78 [2020-10-14 08:39:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:56,882 INFO L479 AbstractCegarLoop]: Abstraction has 1161 states and 1707 transitions. [2020-10-14 08:39:56,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1707 transitions. [2020-10-14 08:39:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 08:39:56,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:56,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:56,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:39:56,884 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:56,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:56,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2088349922, now seen corresponding path program 1 times [2020-10-14 08:39:56,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:56,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324323842] [2020-10-14 08:39:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:57,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:57,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:57,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:57,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:59,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:59,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 08:39:59,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:39:59,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2951 [2020-10-14 08:39:59,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:59,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 08:39:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:39:59,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:59,998 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:39:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:00,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:00,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:00,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:00,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 08:40:00,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:00,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:00,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:00,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:00,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:00,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:00,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324323842] [2020-10-14 08:40:00,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:00,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:40:00,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244141598] [2020-10-14 08:40:00,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:40:00,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:00,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:40:00,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:40:00,041 INFO L87 Difference]: Start difference. First operand 1161 states and 1707 transitions. Second operand 4 states. [2020-10-14 08:40:00,187 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:40:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:00,750 INFO L93 Difference]: Finished difference Result 3085 states and 4573 transitions. [2020-10-14 08:40:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:40:00,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-14 08:40:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:00,757 INFO L225 Difference]: With dead ends: 3085 [2020-10-14 08:40:00,757 INFO L226 Difference]: Without dead ends: 2059 [2020-10-14 08:40:00,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:40:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2020-10-14 08:40:01,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 2057. [2020-10-14 08:40:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2057 states. [2020-10-14 08:40:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2979 transitions. [2020-10-14 08:40:01,171 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2979 transitions. Word has length 78 [2020-10-14 08:40:01,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:01,171 INFO L479 AbstractCegarLoop]: Abstraction has 2057 states and 2979 transitions. [2020-10-14 08:40:01,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:40:01,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2979 transitions. [2020-10-14 08:40:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:40:01,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:01,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:01,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:40:01,175 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:01,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1578766981, now seen corresponding path program 1 times [2020-10-14 08:40:01,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:01,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369151765] [2020-10-14 08:40:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:01,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:04,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:04,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:40:04,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:40:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2803 [2020-10-14 08:40:04,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:04,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 08:40:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:40:04,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:04,150 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:04,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:04,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:04,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:04,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:40:04,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:04,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:04,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369151765] [2020-10-14 08:40:04,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:04,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:40:04,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709254581] [2020-10-14 08:40:04,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:40:04,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:04,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:40:04,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:40:04,171 INFO L87 Difference]: Start difference. First operand 2057 states and 2979 transitions. Second operand 4 states. [2020-10-14 08:40:04,331 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:40:04,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:04,982 INFO L93 Difference]: Finished difference Result 5005 states and 7341 transitions. [2020-10-14 08:40:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:40:04,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 08:40:04,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:04,997 INFO L225 Difference]: With dead ends: 5005 [2020-10-14 08:40:04,997 INFO L226 Difference]: Without dead ends: 3083 [2020-10-14 08:40:05,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:40:05,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2020-10-14 08:40:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 3081. [2020-10-14 08:40:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3081 states. [2020-10-14 08:40:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 4443 transitions. [2020-10-14 08:40:05,496 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 4443 transitions. Word has length 80 [2020-10-14 08:40:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:05,496 INFO L479 AbstractCegarLoop]: Abstraction has 3081 states and 4443 transitions. [2020-10-14 08:40:05,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:40:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 4443 transitions. [2020-10-14 08:40:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:40:05,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:05,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:05,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:40:05,499 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash 868579332, now seen corresponding path program 1 times [2020-10-14 08:40:05,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:05,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799655389] [2020-10-14 08:40:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:05,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:05,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:08,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:08,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:40:08,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:40:08,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2985 [2020-10-14 08:40:08,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:08,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 08:40:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:40:08,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:08,651 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:08,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:08,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:08,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:08,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:08,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:40:08,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:08,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:08,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799655389] [2020-10-14 08:40:08,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:08,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:40:08,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401046496] [2020-10-14 08:40:08,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:40:08,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:08,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:40:08,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:40:08,680 INFO L87 Difference]: Start difference. First operand 3081 states and 4443 transitions. Second operand 4 states. [2020-10-14 08:40:08,845 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:40:10,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:10,079 INFO L93 Difference]: Finished difference Result 8429 states and 12109 transitions. [2020-10-14 08:40:10,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:40:10,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 08:40:10,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:10,096 INFO L225 Difference]: With dead ends: 8429 [2020-10-14 08:40:10,096 INFO L226 Difference]: Without dead ends: 5483 [2020-10-14 08:40:10,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:40:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2020-10-14 08:40:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 5385. [2020-10-14 08:40:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5385 states. [2020-10-14 08:40:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 7523 transitions. [2020-10-14 08:40:10,760 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 7523 transitions. Word has length 80 [2020-10-14 08:40:10,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:10,761 INFO L479 AbstractCegarLoop]: Abstraction has 5385 states and 7523 transitions. [2020-10-14 08:40:10,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:40:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 7523 transitions. [2020-10-14 08:40:10,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 08:40:10,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:10,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:10,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 08:40:10,764 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:10,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:10,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1637968547, now seen corresponding path program 1 times [2020-10-14 08:40:10,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:10,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605732884] [2020-10-14 08:40:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:10,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:11,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:11,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:12,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:12,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 08:40:12,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:40:12,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1553 [2020-10-14 08:40:12,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:12,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:12,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:40:12,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 08:40:12,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:40:12,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:12,511 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:12,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:12,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:12,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:12,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:12,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:40:12,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:12,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:12,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:12,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605732884] [2020-10-14 08:40:12,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:12,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:40:12,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666794974] [2020-10-14 08:40:12,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:40:12,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:12,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:40:12,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:40:12,535 INFO L87 Difference]: Start difference. First operand 5385 states and 7523 transitions. Second operand 6 states. [2020-10-14 08:40:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:14,320 INFO L93 Difference]: Finished difference Result 9603 states and 13180 transitions. [2020-10-14 08:40:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:40:14,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-14 08:40:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:14,354 INFO L225 Difference]: With dead ends: 9603 [2020-10-14 08:40:14,355 INFO L226 Difference]: Without dead ends: 9601 [2020-10-14 08:40:14,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:40:14,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9601 states. [2020-10-14 08:40:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9601 to 5577. [2020-10-14 08:40:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5577 states. [2020-10-14 08:40:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 7683 transitions. [2020-10-14 08:40:15,125 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 7683 transitions. Word has length 81 [2020-10-14 08:40:15,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:15,125 INFO L479 AbstractCegarLoop]: Abstraction has 5577 states and 7683 transitions. [2020-10-14 08:40:15,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:40:15,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 7683 transitions. [2020-10-14 08:40:15,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 08:40:15,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:15,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:15,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 08:40:15,128 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:15,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:15,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1293213142, now seen corresponding path program 1 times [2020-10-14 08:40:15,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:15,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683840053] [2020-10-14 08:40:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:15,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:15,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:15,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:17,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:17,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:18,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:19,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:20,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 08:40:20,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:40:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:40:20,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:20,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 08:40:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 08:40:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:20,312 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:20,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:20,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:20,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:40:20,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:20,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:20,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:20,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:20,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683840053] [2020-10-14 08:40:20,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:20,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:40:20,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652433070] [2020-10-14 08:40:20,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:40:20,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:20,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:40:20,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:40:20,335 INFO L87 Difference]: Start difference. First operand 5577 states and 7683 transitions. Second operand 4 states. [2020-10-14 08:40:20,493 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:40:22,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:22,226 INFO L93 Difference]: Finished difference Result 14157 states and 19485 transitions. [2020-10-14 08:40:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:40:22,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-14 08:40:22,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:22,247 INFO L225 Difference]: With dead ends: 14157 [2020-10-14 08:40:22,247 INFO L226 Difference]: Without dead ends: 8715 [2020-10-14 08:40:22,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:40:22,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8715 states. [2020-10-14 08:40:23,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8715 to 8153. [2020-10-14 08:40:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8153 states. [2020-10-14 08:40:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8153 states to 8153 states and 11067 transitions. [2020-10-14 08:40:23,684 INFO L78 Accepts]: Start accepts. Automaton has 8153 states and 11067 transitions. Word has length 81 [2020-10-14 08:40:23,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:23,685 INFO L479 AbstractCegarLoop]: Abstraction has 8153 states and 11067 transitions. [2020-10-14 08:40:23,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:40:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8153 states and 11067 transitions. [2020-10-14 08:40:23,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:40:23,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:23,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:23,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 08:40:23,691 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:23,692 INFO L82 PathProgramCache]: Analyzing trace with hash -367256601, now seen corresponding path program 1 times [2020-10-14 08:40:23,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:23,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083371239] [2020-10-14 08:40:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:23,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:23,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:26,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:27,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:27,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:28,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:28,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:40:28,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:40:28,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:40:28,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:28,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 08:40:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 08:40:28,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:28,891 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:28,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:28,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:28,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:28,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:28,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:28,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:40:28,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:28,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:28,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083371239] [2020-10-14 08:40:28,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:28,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:40:28,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356300944] [2020-10-14 08:40:28,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:40:28,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:28,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:40:28,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:40:28,916 INFO L87 Difference]: Start difference. First operand 8153 states and 11067 transitions. Second operand 4 states. [2020-10-14 08:40:30,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:30,469 INFO L93 Difference]: Finished difference Result 15745 states and 21389 transitions. [2020-10-14 08:40:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:40:30,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-14 08:40:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:30,488 INFO L225 Difference]: With dead ends: 15745 [2020-10-14 08:40:30,488 INFO L226 Difference]: Without dead ends: 7727 [2020-10-14 08:40:30,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:40:30,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7727 states. [2020-10-14 08:40:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7727 to 7725. [2020-10-14 08:40:31,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7725 states. [2020-10-14 08:40:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7725 states to 7725 states and 10283 transitions. [2020-10-14 08:40:31,849 INFO L78 Accepts]: Start accepts. Automaton has 7725 states and 10283 transitions. Word has length 101 [2020-10-14 08:40:31,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:31,849 INFO L479 AbstractCegarLoop]: Abstraction has 7725 states and 10283 transitions. [2020-10-14 08:40:31,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:40:31,849 INFO L276 IsEmpty]: Start isEmpty. Operand 7725 states and 10283 transitions. [2020-10-14 08:40:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:40:31,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:31,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:31,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 08:40:31,855 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:31,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:31,855 INFO L82 PathProgramCache]: Analyzing trace with hash -53762353, now seen corresponding path program 1 times [2020-10-14 08:40:31,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:31,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638587563] [2020-10-14 08:40:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:31,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:31,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:32,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:33,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:33,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:36,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:36,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:40:36,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:40:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:40:36,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:36,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:40:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:40:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 08:40:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:37,040 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:37,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:37,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:37,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:37,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:40:37,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:37,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:37,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638587563] [2020-10-14 08:40:37,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:40:37,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:40:37,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477593451] [2020-10-14 08:40:37,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:40:37,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:37,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:40:37,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:40:37,066 INFO L87 Difference]: Start difference. First operand 7725 states and 10283 transitions. Second operand 6 states. [2020-10-14 08:40:37,240 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:40:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:39,289 INFO L93 Difference]: Finished difference Result 18647 states and 24902 transitions. [2020-10-14 08:40:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:40:39,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:40:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:39,310 INFO L225 Difference]: With dead ends: 18647 [2020-10-14 08:40:39,311 INFO L226 Difference]: Without dead ends: 11057 [2020-10-14 08:40:39,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:40:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11057 states. [2020-10-14 08:40:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11057 to 10589. [2020-10-14 08:40:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10589 states. [2020-10-14 08:40:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 14115 transitions. [2020-10-14 08:40:41,165 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 14115 transitions. Word has length 102 [2020-10-14 08:40:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:41,166 INFO L479 AbstractCegarLoop]: Abstraction has 10589 states and 14115 transitions. [2020-10-14 08:40:41,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:40:41,166 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 14115 transitions. [2020-10-14 08:40:41,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:40:41,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:41,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:41,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 08:40:41,170 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:41,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:41,170 INFO L82 PathProgramCache]: Analyzing trace with hash 799820425, now seen corresponding path program 1 times [2020-10-14 08:40:41,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:41,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362894871] [2020-10-14 08:40:41,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:41,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:41,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:41,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:41,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:43,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:43,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:43,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:43,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:46,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:40:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:40:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:40:46,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:46,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:40:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:40:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 08:40:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:46,457 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:46,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:46,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:46,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:46,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:46,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:40:46,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:46,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:46,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:46,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:46,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:46,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 08:40:46,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362894871] [2020-10-14 08:40:46,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:40:46,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:40:46,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024035385] [2020-10-14 08:40:46,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:40:46,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:46,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:40:46,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:40:46,524 INFO L87 Difference]: Start difference. First operand 10589 states and 14115 transitions. Second operand 6 states. [2020-10-14 08:40:46,756 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:40:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:51,862 INFO L93 Difference]: Finished difference Result 41043 states and 54744 transitions. [2020-10-14 08:40:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:40:51,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:40:51,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:51,905 INFO L225 Difference]: With dead ends: 41043 [2020-10-14 08:40:51,905 INFO L226 Difference]: Without dead ends: 30589 [2020-10-14 08:40:51,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:40:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30589 states. [2020-10-14 08:40:55,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30589 to 19245. [2020-10-14 08:40:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19245 states. [2020-10-14 08:40:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19245 states to 19245 states and 25611 transitions. [2020-10-14 08:40:55,086 INFO L78 Accepts]: Start accepts. Automaton has 19245 states and 25611 transitions. Word has length 102 [2020-10-14 08:40:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:55,087 INFO L479 AbstractCegarLoop]: Abstraction has 19245 states and 25611 transitions. [2020-10-14 08:40:55,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:40:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 19245 states and 25611 transitions. [2020-10-14 08:40:55,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:40:55,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:55,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:55,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 08:40:55,090 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:55,090 INFO L82 PathProgramCache]: Analyzing trace with hash -615188797, now seen corresponding path program 1 times [2020-10-14 08:40:55,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:55,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228112833] [2020-10-14 08:40:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:55,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:55,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:55,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:55,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:56,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:57,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:57,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:58,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:00,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:41:00,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 08:41:00,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:41:00,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:00,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:41:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:41:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 08:41:00,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:00,268 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:00,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:00,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:00,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:00,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:41:00,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:00,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 08:41:00,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228112833] [2020-10-14 08:41:00,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:41:00,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:41:00,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601312258] [2020-10-14 08:41:00,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:41:00,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:00,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:41:00,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:41:00,295 INFO L87 Difference]: Start difference. First operand 19245 states and 25611 transitions. Second operand 6 states. [2020-10-14 08:41:00,463 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:41:07,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:07,507 INFO L93 Difference]: Finished difference Result 52579 states and 69960 transitions. [2020-10-14 08:41:07,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:41:07,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:41:07,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:07,565 INFO L225 Difference]: With dead ends: 52579 [2020-10-14 08:41:07,565 INFO L226 Difference]: Without dead ends: 42125 [2020-10-14 08:41:07,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42125 states. [2020-10-14 08:41:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42125 to 30637. [2020-10-14 08:41:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30637 states. [2020-10-14 08:41:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30637 states to 30637 states and 40683 transitions. [2020-10-14 08:41:13,888 INFO L78 Accepts]: Start accepts. Automaton has 30637 states and 40683 transitions. Word has length 102 [2020-10-14 08:41:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:13,889 INFO L479 AbstractCegarLoop]: Abstraction has 30637 states and 40683 transitions. [2020-10-14 08:41:13,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:41:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 30637 states and 40683 transitions. [2020-10-14 08:41:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:41:13,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:13,893 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:41:13,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 08:41:13,893 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:13,893 INFO L82 PathProgramCache]: Analyzing trace with hash 493715320, now seen corresponding path program 1 times [2020-10-14 08:41:13,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:13,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586128656] [2020-10-14 08:41:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:13,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:15,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:18,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:18,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:41:18,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:41:18,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 08:41:18,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:18,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:41:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:41:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 08:41:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:19,235 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:19,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:19,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:19,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:41:19,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:19,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:41:19,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 08:41:19,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586128656] [2020-10-14 08:41:19,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:19,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:19,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855616921] [2020-10-14 08:41:19,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:41:19,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:19,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:41:19,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:19,316 INFO L87 Difference]: Start difference. First operand 30637 states and 40683 transitions. Second operand 10 states. [2020-10-14 08:41:19,600 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:41:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:28,514 INFO L93 Difference]: Finished difference Result 77055 states and 102153 transitions. [2020-10-14 08:41:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:41:28,514 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-10-14 08:41:28,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:28,561 INFO L225 Difference]: With dead ends: 77055 [2020-10-14 08:41:28,561 INFO L226 Difference]: Without dead ends: 46529 [2020-10-14 08:41:28,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-10-14 08:41:28,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46529 states. [2020-10-14 08:41:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46529 to 30637. [2020-10-14 08:41:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30637 states. [2020-10-14 08:41:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30637 states to 30637 states and 40679 transitions. [2020-10-14 08:41:34,861 INFO L78 Accepts]: Start accepts. Automaton has 30637 states and 40679 transitions. Word has length 103 [2020-10-14 08:41:34,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:34,862 INFO L479 AbstractCegarLoop]: Abstraction has 30637 states and 40679 transitions. [2020-10-14 08:41:34,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:41:34,862 INFO L276 IsEmpty]: Start isEmpty. Operand 30637 states and 40679 transitions. [2020-10-14 08:41:34,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:41:34,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:34,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:41:34,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 08:41:34,866 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:34,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:34,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1687175227, now seen corresponding path program 1 times [2020-10-14 08:41:34,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:34,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309128298] [2020-10-14 08:41:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:35,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:35,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:35,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:35,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:39,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:39,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:41:39,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:41:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:41:39,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:39,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 08:41:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:41:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 08:41:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:40,222 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:40,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:40,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:40,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:40,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:40,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:40,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:41:40,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:40,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:41:40,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:41:40,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309128298] [2020-10-14 08:41:40,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:41:40,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 08:41:40,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721663447] [2020-10-14 08:41:40,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 08:41:40,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 08:41:40,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:41:40,272 INFO L87 Difference]: Start difference. First operand 30637 states and 40679 transitions. Second operand 13 states. [2020-10-14 08:41:40,703 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 151