/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=NARROWEST --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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:12:29,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:12:29,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:12:29,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:12:29,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:12:29,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:12:29,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:12:29,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:12:29,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:12:29,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:12:29,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:12:29,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:12:29,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:12:29,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:12:29,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:12:29,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:12:29,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:12:29,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:12:29,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:12:29,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:12:29,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:12:29,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:12:29,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:12:29,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:12:29,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:12:29,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:12:29,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:12:29,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:12:29,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:12:29,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:12:29,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:12:29,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:12:29,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:12:29,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:12:29,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:12:29,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:12:29,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:12:29,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:12:29,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:12:29,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:12:29,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:12:29,209 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 [2020-10-13 14:12:29,246 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:12:29,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:12:29,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:12:29,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:12:29,249 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:12:29,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:12:29,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:12:29,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:12:29,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:12:29,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:12:29,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:12:29,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:12:29,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:12:29,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:12:29,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:12:29,252 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:12:29,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:12:29,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:12:29,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:12:29,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:12:29,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:12:29,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:12:29,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:12:29,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:12:29,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:12:29,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:12:29,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:12:29,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:12:29,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:12:29,255 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:12:29,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:12:29,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:12:29,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:12:29,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:12:29,555 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:12:29,555 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:12:29,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89a69c7b7/987214b5c4b44d86a6aad906f0d3f490/FLAG2e4e2b615 [2020-10-13 14:12:30,227 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:12:30,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:12:30,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89a69c7b7/987214b5c4b44d86a6aad906f0d3f490/FLAG2e4e2b615 [2020-10-13 14:12:30,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89a69c7b7/987214b5c4b44d86a6aad906f0d3f490 [2020-10-13 14:12:30,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:12:30,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:12:30,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:12:30,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:12:30,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:12:30,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:12:30" (1/1) ... [2020-10-13 14:12:30,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e827995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:30, skipping insertion in model container [2020-10-13 14:12:30,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:12:30" (1/1) ... [2020-10-13 14:12:30,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:12:30,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:12:31,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:12:31,341 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:12:31,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:12:31,793 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:12:31,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:31 WrapperNode [2020-10-13 14:12:31,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:12:31,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:12:31,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:12:31,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:12:31,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:31" (1/1) ... [2020-10-13 14:12:31,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:31" (1/1) ... [2020-10-13 14:12:31,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:31" (1/1) ... [2020-10-13 14:12:31,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:31" (1/1) ... [2020-10-13 14:12:31,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:31" (1/1) ... [2020-10-13 14:12:31,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:31" (1/1) ... [2020-10-13 14:12:31,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:31" (1/1) ... [2020-10-13 14:12:31,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:12:31,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:12:31,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:12:31,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:12:31,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:31" (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 [2020-10-13 14:12:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:12:32,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:12:32,075 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:12:32,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:12:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:12:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:12:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:12:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:12:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:12:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:12:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:12:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:12:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:12:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:12:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:12:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:12:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:12:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:12:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:12:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:12:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:12:34,083 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:12:34,083 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:12:34,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:12:34 BoogieIcfgContainer [2020-10-13 14:12:34,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:12:34,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:12:34,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:12:34,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:12:34,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:12:30" (1/3) ... [2020-10-13 14:12:34,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f72673c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:12:34, skipping insertion in model container [2020-10-13 14:12:34,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:12:31" (2/3) ... [2020-10-13 14:12:34,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f72673c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:12:34, skipping insertion in model container [2020-10-13 14:12:34,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:12:34" (3/3) ... [2020-10-13 14:12:34,101 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:12:34,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:12:34,124 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-13 14:12:34,139 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-13 14:12:34,168 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:12:34,168 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:12:34,168 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:12:34,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:12:34,168 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:12:34,169 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:12:34,169 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:12:34,169 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:12:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states. [2020-10-13 14:12:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:12:34,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:34,227 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] [2020-10-13 14:12:34,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:34,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:34,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2065452195, now seen corresponding path program 1 times [2020-10-13 14:12:34,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:34,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385919482] [2020-10-13 14:12:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:34,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:39,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:12:39,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:12:39,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:12:39,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:12:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:12:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:12:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:12:40,609 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:12:40,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:40,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:40,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:40,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 14:12:40,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:40,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385919482] [2020-10-13 14:12:40,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:40,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:12:40,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461395681] [2020-10-13 14:12:40,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:12:40,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:40,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:12:40,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:40,738 INFO L87 Difference]: Start difference. First operand 575 states. Second operand 7 states. [2020-10-13 14:12:41,389 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:12:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:45,898 INFO L93 Difference]: Finished difference Result 1392 states and 2245 transitions. [2020-10-13 14:12:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:45,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:12:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:45,941 INFO L225 Difference]: With dead ends: 1392 [2020-10-13 14:12:45,942 INFO L226 Difference]: Without dead ends: 1187 [2020-10-13 14:12:45,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:12:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-13 14:12:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 666. [2020-10-13 14:12:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-10-13 14:12:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 858 transitions. [2020-10-13 14:12:46,097 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 858 transitions. Word has length 64 [2020-10-13 14:12:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:46,098 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 858 transitions. [2020-10-13 14:12:46,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:12:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 858 transitions. [2020-10-13 14:12:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:12:46,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:46,108 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] [2020-10-13 14:12:46,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:12:46,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:46,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1513076432, now seen corresponding path program 1 times [2020-10-13 14:12:46,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:46,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155550690] [2020-10-13 14:12:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:46,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:46,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:51,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:51,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:12:51,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:12:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:12:51,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:12:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:12:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:12:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:51,754 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:12:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:51,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:51,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:51,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:51,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:12:51,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:51,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155550690] [2020-10-13 14:12:51,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:51,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:12:51,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727805749] [2020-10-13 14:12:51,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:12:51,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:51,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:12:51,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:51,805 INFO L87 Difference]: Start difference. First operand 666 states and 858 transitions. Second operand 7 states. [2020-10-13 14:12:52,355 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:12:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:55,436 INFO L93 Difference]: Finished difference Result 2100 states and 2878 transitions. [2020-10-13 14:12:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:55,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:12:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:55,449 INFO L225 Difference]: With dead ends: 2100 [2020-10-13 14:12:55,449 INFO L226 Difference]: Without dead ends: 1921 [2020-10-13 14:12:55,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:12:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2020-10-13 14:12:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 900. [2020-10-13 14:12:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-10-13 14:12:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1209 transitions. [2020-10-13 14:12:55,511 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1209 transitions. Word has length 64 [2020-10-13 14:12:55,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:55,511 INFO L479 AbstractCegarLoop]: Abstraction has 900 states and 1209 transitions. [2020-10-13 14:12:55,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:12:55,512 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1209 transitions. [2020-10-13 14:12:55,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:12:55,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:55,514 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] [2020-10-13 14:12:55,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:12:55,514 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:55,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:55,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1452359371, now seen corresponding path program 1 times [2020-10-13 14:12:55,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:55,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151055276] [2020-10-13 14:12:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:00,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:00,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:13:00,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:13:00,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:13:00,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:13:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:13:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 14:13:00,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:13:01,119 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:13:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:01,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:01,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:01,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:13:01,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:01,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:01,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151055276] [2020-10-13 14:13:01,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:01,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:13:01,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589512695] [2020-10-13 14:13:01,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:13:01,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:01,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:13:01,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:13:01,177 INFO L87 Difference]: Start difference. First operand 900 states and 1209 transitions. Second operand 7 states. [2020-10-13 14:13:01,656 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:13:05,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:05,621 INFO L93 Difference]: Finished difference Result 3387 states and 4832 transitions. [2020-10-13 14:13:05,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:13:05,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:13:05,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:05,639 INFO L225 Difference]: With dead ends: 3387 [2020-10-13 14:13:05,640 INFO L226 Difference]: Without dead ends: 2988 [2020-10-13 14:13:05,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:13:05,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-10-13 14:13:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1328. [2020-10-13 14:13:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-10-13 14:13:05,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1834 transitions. [2020-10-13 14:13:05,767 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1834 transitions. Word has length 64 [2020-10-13 14:13:05,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:05,770 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1834 transitions. [2020-10-13 14:13:05,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:13:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1834 transitions. [2020-10-13 14:13:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:13:05,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:05,781 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] [2020-10-13 14:13:05,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:13:05,782 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:05,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:05,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1688705004, now seen corresponding path program 1 times [2020-10-13 14:13:05,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:05,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691455144] [2020-10-13 14:13:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:05,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:06,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:10,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:10,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:13:10,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:13:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:13:10,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:13:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:13:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:13:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:11,543 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:13:11,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:11,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:11,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:11,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:11,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:13:11,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:11,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:11,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691455144] [2020-10-13 14:13:11,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:11,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:13:11,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377709031] [2020-10-13 14:13:11,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:13:11,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:11,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:13:11,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:13:11,594 INFO L87 Difference]: Start difference. First operand 1328 states and 1834 transitions. Second operand 7 states. [2020-10-13 14:13:12,121 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:13:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:14,888 INFO L93 Difference]: Finished difference Result 4073 states and 5850 transitions. [2020-10-13 14:13:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:13:14,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:13:14,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:14,906 INFO L225 Difference]: With dead ends: 4073 [2020-10-13 14:13:14,907 INFO L226 Difference]: Without dead ends: 3598 [2020-10-13 14:13:14,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:13:14,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2020-10-13 14:13:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 1550. [2020-10-13 14:13:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1550 states. [2020-10-13 14:13:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2169 transitions. [2020-10-13 14:13:15,012 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2169 transitions. Word has length 64 [2020-10-13 14:13:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:15,012 INFO L479 AbstractCegarLoop]: Abstraction has 1550 states and 2169 transitions. [2020-10-13 14:13:15,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:13:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2169 transitions. [2020-10-13 14:13:15,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:13:15,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:15,015 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] [2020-10-13 14:13:15,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:13:15,015 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:15,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:15,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1515414427, now seen corresponding path program 1 times [2020-10-13 14:13:15,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:15,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029965446] [2020-10-13 14:13:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:15,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:15,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:15,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:15,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:19,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:20,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:20,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:13:20,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:13:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:13:20,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:13:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:13:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:13:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:20,684 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:13:20,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:20,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:20,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:20,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:20,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:13:20,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:20,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:20,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:13:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:20,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029965446] [2020-10-13 14:13:20,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:20,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:13:20,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582436760] [2020-10-13 14:13:20,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:13:20,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:20,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:13:20,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:13:20,773 INFO L87 Difference]: Start difference. First operand 1550 states and 2169 transitions. Second operand 7 states. [2020-10-13 14:13:21,547 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:13:24,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:24,406 INFO L93 Difference]: Finished difference Result 4486 states and 6480 transitions. [2020-10-13 14:13:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:13:24,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:13:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:24,424 INFO L225 Difference]: With dead ends: 4486 [2020-10-13 14:13:24,424 INFO L226 Difference]: Without dead ends: 4011 [2020-10-13 14:13:24,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:13:24,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2020-10-13 14:13:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 1878. [2020-10-13 14:13:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-10-13 14:13:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2658 transitions. [2020-10-13 14:13:24,586 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2658 transitions. Word has length 64 [2020-10-13 14:13:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:24,587 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2658 transitions. [2020-10-13 14:13:24,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:13:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2658 transitions. [2020-10-13 14:13:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:13:24,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:24,593 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] [2020-10-13 14:13:24,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:13:24,593 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:24,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:24,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1702120036, now seen corresponding path program 1 times [2020-10-13 14:13:24,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:24,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215420331] [2020-10-13 14:13:24,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:24,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:24,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:25,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:29,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:13:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:13:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:13:29,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:13:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:13:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:13:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:30,126 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:13:30,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:30,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:30,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:30,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:13:30,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:30,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215420331] [2020-10-13 14:13:30,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:30,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:13:30,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385563175] [2020-10-13 14:13:30,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:13:30,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:30,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:13:30,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:13:30,163 INFO L87 Difference]: Start difference. First operand 1878 states and 2658 transitions. Second operand 7 states. [2020-10-13 14:13:30,710 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:13:33,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:33,336 INFO L93 Difference]: Finished difference Result 4879 states and 7116 transitions. [2020-10-13 14:13:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:13:33,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:13:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:33,352 INFO L225 Difference]: With dead ends: 4879 [2020-10-13 14:13:33,352 INFO L226 Difference]: Without dead ends: 3883 [2020-10-13 14:13:33,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:13:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2020-10-13 14:13:33,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 1743. [2020-10-13 14:13:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1743 states. [2020-10-13 14:13:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2462 transitions. [2020-10-13 14:13:33,484 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2462 transitions. Word has length 64 [2020-10-13 14:13:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:33,485 INFO L479 AbstractCegarLoop]: Abstraction has 1743 states and 2462 transitions. [2020-10-13 14:13:33,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:13:33,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2462 transitions. [2020-10-13 14:13:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:13:33,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:33,487 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] [2020-10-13 14:13:33,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:13:33,487 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:33,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1819056989, now seen corresponding path program 1 times [2020-10-13 14:13:33,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:33,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444102798] [2020-10-13 14:13:33,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:38,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:38,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:38,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:13:38,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:13:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:13:38,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:13:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:13:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:13:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:39,323 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:13:39,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:39,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:39,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:39,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 14:13:39,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:13:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:13:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:39,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444102798] [2020-10-13 14:13:39,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:39,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:13:39,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006683083] [2020-10-13 14:13:39,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:13:39,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:39,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:13:39,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:13:39,438 INFO L87 Difference]: Start difference. First operand 1743 states and 2462 transitions. Second operand 6 states. [2020-10-13 14:13:40,210 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-13 14:13:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:42,324 INFO L93 Difference]: Finished difference Result 2879 states and 4078 transitions. [2020-10-13 14:13:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:13:42,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:13:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:42,332 INFO L225 Difference]: With dead ends: 2879 [2020-10-13 14:13:42,332 INFO L226 Difference]: Without dead ends: 2322 [2020-10-13 14:13:42,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:13:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2020-10-13 14:13:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 1569. [2020-10-13 14:13:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-10-13 14:13:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2188 transitions. [2020-10-13 14:13:42,473 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2188 transitions. Word has length 66 [2020-10-13 14:13:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:42,474 INFO L479 AbstractCegarLoop]: Abstraction has 1569 states and 2188 transitions. [2020-10-13 14:13:42,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:13:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2188 transitions. [2020-10-13 14:13:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:13:42,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:42,482 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] [2020-10-13 14:13:42,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:13:42,483 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:42,484 INFO L82 PathProgramCache]: Analyzing trace with hash 978887721, now seen corresponding path program 1 times [2020-10-13 14:13:42,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:42,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670786383] [2020-10-13 14:13:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:42,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:42,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:44,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:45,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:46,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:47,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:13:47,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:13:47,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:13:47,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:47,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:13:47,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:13:47,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:13:47,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:48,231 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:13:48,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:48,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:48,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:48,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:48,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 14:13:48,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:13:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:13:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:48,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670786383] [2020-10-13 14:13:48,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:48,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:13:48,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551299908] [2020-10-13 14:13:48,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:13:48,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:48,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:13:48,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:13:48,324 INFO L87 Difference]: Start difference. First operand 1569 states and 2188 transitions. Second operand 6 states. [2020-10-13 14:13:48,848 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:13:50,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:50,323 INFO L93 Difference]: Finished difference Result 2412 states and 3440 transitions. [2020-10-13 14:13:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:13:50,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:13:50,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:50,330 INFO L225 Difference]: With dead ends: 2412 [2020-10-13 14:13:50,330 INFO L226 Difference]: Without dead ends: 1420 [2020-10-13 14:13:50,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:13:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-10-13 14:13:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 908. [2020-10-13 14:13:50,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2020-10-13 14:13:50,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1251 transitions. [2020-10-13 14:13:50,434 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1251 transitions. Word has length 66 [2020-10-13 14:13:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:50,434 INFO L479 AbstractCegarLoop]: Abstraction has 908 states and 1251 transitions. [2020-10-13 14:13:50,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:13:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1251 transitions. [2020-10-13 14:13:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:13:50,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:50,436 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] [2020-10-13 14:13:50,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:13:50,436 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:50,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2117479103, now seen corresponding path program 1 times [2020-10-13 14:13:50,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:50,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879187834] [2020-10-13 14:13:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:50,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:53,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:54,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:54,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:55,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:55,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:55,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:13:55,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:13:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:13:55,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:13:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:13:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:13:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:55,979 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:13:55,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:55,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:56,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:56,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:56,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:13:56,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:13:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:56,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879187834] [2020-10-13 14:13:56,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:56,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:13:56,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236190065] [2020-10-13 14:13:56,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:13:56,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:56,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:13:56,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:13:56,031 INFO L87 Difference]: Start difference. First operand 908 states and 1251 transitions. Second operand 6 states. [2020-10-13 14:13:56,589 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-13 14:13:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:58,138 INFO L93 Difference]: Finished difference Result 1419 states and 1959 transitions. [2020-10-13 14:13:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:13:58,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:13:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:58,141 INFO L225 Difference]: With dead ends: 1419 [2020-10-13 14:13:58,142 INFO L226 Difference]: Without dead ends: 891 [2020-10-13 14:13:58,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:13:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-13 14:13:58,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 846. [2020-10-13 14:13:58,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-13 14:13:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1159 transitions. [2020-10-13 14:13:58,244 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1159 transitions. Word has length 66 [2020-10-13 14:13:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:58,244 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1159 transitions. [2020-10-13 14:13:58,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:13:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1159 transitions. [2020-10-13 14:13:58,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:13:58,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:58,246 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] [2020-10-13 14:13:58,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:13:58,246 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:58,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:58,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1275684332, now seen corresponding path program 1 times [2020-10-13 14:13:58,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:58,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720121427] [2020-10-13 14:13:58,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:58,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:58,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:03,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:03,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:14:03,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:14:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:14:03,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:14:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:14:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:14:03,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:03,805 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:03,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:03,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:03,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:03,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 14:14:03,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:14:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:14:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:03,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720121427] [2020-10-13 14:14:03,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:03,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:14:03,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312249679] [2020-10-13 14:14:03,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:14:03,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:03,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:14:03,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:14:03,856 INFO L87 Difference]: Start difference. First operand 846 states and 1159 transitions. Second operand 6 states. [2020-10-13 14:14:04,414 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:14:05,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:05,729 INFO L93 Difference]: Finished difference Result 1335 states and 1862 transitions. [2020-10-13 14:14:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:14:05,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:14:05,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:05,733 INFO L225 Difference]: With dead ends: 1335 [2020-10-13 14:14:05,733 INFO L226 Difference]: Without dead ends: 780 [2020-10-13 14:14:05,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:14:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-10-13 14:14:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 485. [2020-10-13 14:14:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-13 14:14:05,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 646 transitions. [2020-10-13 14:14:05,816 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 646 transitions. Word has length 66 [2020-10-13 14:14:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:05,816 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 646 transitions. [2020-10-13 14:14:05,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:14:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 646 transitions. [2020-10-13 14:14:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:14:05,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:05,818 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] [2020-10-13 14:14:05,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:14:05,818 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:05,819 INFO L82 PathProgramCache]: Analyzing trace with hash -805224888, now seen corresponding path program 1 times [2020-10-13 14:14:05,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:05,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112683758] [2020-10-13 14:14:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:05,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:08,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:08,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:08,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:09,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:10,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:10,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:14:10,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:14:10,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:14:10,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:14:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:14:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:14:10,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:14:11,560 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:11,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:11,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:11,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:11,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:14:11,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:11,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112683758] [2020-10-13 14:14:11,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:11,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:14:11,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837933712] [2020-10-13 14:14:11,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:14:11,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:11,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:14:11,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:14:11,596 INFO L87 Difference]: Start difference. First operand 485 states and 646 transitions. Second operand 11 states. [2020-10-13 14:14:12,926 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 338 DAG size of output: 336 [2020-10-13 14:14:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:18,599 INFO L93 Difference]: Finished difference Result 3324 states and 4799 transitions. [2020-10-13 14:14:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:14:18,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-13 14:14:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:18,613 INFO L225 Difference]: With dead ends: 3324 [2020-10-13 14:14:18,613 INFO L226 Difference]: Without dead ends: 3104 [2020-10-13 14:14:18,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 14:14:18,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2020-10-13 14:14:18,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 485. [2020-10-13 14:14:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-13 14:14:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 645 transitions. [2020-10-13 14:14:18,733 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 645 transitions. Word has length 68 [2020-10-13 14:14:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:18,734 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 645 transitions. [2020-10-13 14:14:18,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:14:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 645 transitions. [2020-10-13 14:14:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:14:18,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:18,736 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] [2020-10-13 14:14:18,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:14:18,736 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:18,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:18,737 INFO L82 PathProgramCache]: Analyzing trace with hash -507482968, now seen corresponding path program 1 times [2020-10-13 14:14:18,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:18,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520603579] [2020-10-13 14:14:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:18,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:18,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:19,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:19,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:19,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:21,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:21,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:21,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:23,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:23,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:14:23,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:14:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:14:23,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:14:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:14:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:24,400 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:24,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:24,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:24,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:14:24,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:24,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:24,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520603579] [2020-10-13 14:14:24,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:24,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:14:24,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585921046] [2020-10-13 14:14:24,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:14:24,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:24,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:14:24,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:14:24,435 INFO L87 Difference]: Start difference. First operand 485 states and 645 transitions. Second operand 10 states. [2020-10-13 14:14:25,100 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2020-10-13 14:14:27,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:27,137 INFO L93 Difference]: Finished difference Result 1194 states and 1668 transitions. [2020-10-13 14:14:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 14:14:27,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-13 14:14:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:27,142 INFO L225 Difference]: With dead ends: 1194 [2020-10-13 14:14:27,142 INFO L226 Difference]: Without dead ends: 945 [2020-10-13 14:14:27,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:14:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-10-13 14:14:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 485. [2020-10-13 14:14:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-13 14:14:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 644 transitions. [2020-10-13 14:14:27,215 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 644 transitions. Word has length 68 [2020-10-13 14:14:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:27,215 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 644 transitions. [2020-10-13 14:14:27,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:14:27,216 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 644 transitions. [2020-10-13 14:14:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:14:27,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:27,217 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] [2020-10-13 14:14:27,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:14:27,217 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:27,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:27,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1103221256, now seen corresponding path program 1 times [2020-10-13 14:14:27,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:27,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361845836] [2020-10-13 14:14:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:27,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:27,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:27,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:32,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:14:32,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:14:32,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:14:32,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:32,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:32,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:14:32,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:14:32,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:32,797 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:32,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:32,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:32,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:32,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:32,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:14:32,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:32,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:32,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:32,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:32,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:32,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361845836] [2020-10-13 14:14:32,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:32,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:32,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978596986] [2020-10-13 14:14:32,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:32,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:32,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:32,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:32,850 INFO L87 Difference]: Start difference. First operand 485 states and 644 transitions. Second operand 7 states. [2020-10-13 14:14:33,413 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2020-10-13 14:14:34,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:34,811 INFO L93 Difference]: Finished difference Result 883 states and 1187 transitions. [2020-10-13 14:14:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:14:34,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 14:14:34,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:34,813 INFO L225 Difference]: With dead ends: 883 [2020-10-13 14:14:34,813 INFO L226 Difference]: Without dead ends: 582 [2020-10-13 14:14:34,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:14:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-13 14:14:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 434. [2020-10-13 14:14:34,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-13 14:14:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 573 transitions. [2020-10-13 14:14:34,876 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 573 transitions. Word has length 68 [2020-10-13 14:14:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:34,877 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 573 transitions. [2020-10-13 14:14:34,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:34,877 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 573 transitions. [2020-10-13 14:14:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:14:34,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:34,878 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] [2020-10-13 14:14:34,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:14:34,879 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:34,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:34,879 INFO L82 PathProgramCache]: Analyzing trace with hash 942912377, now seen corresponding path program 1 times [2020-10-13 14:14:34,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:34,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082490543] [2020-10-13 14:14:34,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:34,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:34,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:35,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:35,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:36,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:39,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:14:39,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:14:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:14:39,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:14:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:14:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:40,539 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:40,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:40,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:40,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:14:40,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:40,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082490543] [2020-10-13 14:14:40,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:40,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:14:40,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542779614] [2020-10-13 14:14:40,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:14:40,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:40,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:14:40,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:14:40,583 INFO L87 Difference]: Start difference. First operand 434 states and 573 transitions. Second operand 10 states. [2020-10-13 14:14:41,137 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:14:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:42,864 INFO L93 Difference]: Finished difference Result 951 states and 1347 transitions. [2020-10-13 14:14:42,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:42,864 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-13 14:14:42,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:42,866 INFO L225 Difference]: With dead ends: 951 [2020-10-13 14:14:42,866 INFO L226 Difference]: Without dead ends: 714 [2020-10-13 14:14:42,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:14:42,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-13 14:14:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 403. [2020-10-13 14:14:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-13 14:14:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 534 transitions. [2020-10-13 14:14:42,964 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 534 transitions. Word has length 69 [2020-10-13 14:14:42,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:42,965 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 534 transitions. [2020-10-13 14:14:42,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:14:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 534 transitions. [2020-10-13 14:14:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:14:42,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:42,966 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] [2020-10-13 14:14:42,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:14:42,966 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:42,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:42,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1996212909, now seen corresponding path program 1 times [2020-10-13 14:14:42,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:42,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036357150] [2020-10-13 14:14:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:43,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:43,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:44,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:46,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:48,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:48,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:14:48,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:14:48,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:14:48,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:14:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:14:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:14:48,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:48,659 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:48,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:48,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:48,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:14:48,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:48,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036357150] [2020-10-13 14:14:48,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:48,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:14:48,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941319628] [2020-10-13 14:14:48,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:14:48,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:48,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:14:48,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:14:48,691 INFO L87 Difference]: Start difference. First operand 403 states and 534 transitions. Second operand 11 states. [2020-10-13 14:14:49,359 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2020-10-13 14:14:52,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:52,504 INFO L93 Difference]: Finished difference Result 2355 states and 3363 transitions. [2020-10-13 14:14:52,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:14:52,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:14:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:52,508 INFO L225 Difference]: With dead ends: 2355 [2020-10-13 14:14:52,508 INFO L226 Difference]: Without dead ends: 2349 [2020-10-13 14:14:52,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:14:52,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2020-10-13 14:14:52,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 403. [2020-10-13 14:14:52,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-13 14:14:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 533 transitions. [2020-10-13 14:14:52,601 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 533 transitions. Word has length 70 [2020-10-13 14:14:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:52,601 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 533 transitions. [2020-10-13 14:14:52,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:14:52,602 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 533 transitions. [2020-10-13 14:14:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:14:52,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:52,602 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] [2020-10-13 14:14:52,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:14:52,603 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:52,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:52,603 INFO L82 PathProgramCache]: Analyzing trace with hash 2126596941, now seen corresponding path program 1 times [2020-10-13 14:14:52,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:52,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926688942] [2020-10-13 14:14:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:52,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:52,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:55,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:57,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:57,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:14:57,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:14:57,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:14:57,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:14:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:14:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:14:57,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:58,282 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:58,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:58,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:58,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:58,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:58,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:58,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:14:58,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:58,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:58,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:58,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926688942] [2020-10-13 14:14:58,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:58,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:14:58,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703599313] [2020-10-13 14:14:58,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:14:58,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:58,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:14:58,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:14:58,329 INFO L87 Difference]: Start difference. First operand 403 states and 533 transitions. Second operand 11 states. [2020-10-13 14:14:58,912 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2020-10-13 14:15:04,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:04,213 INFO L93 Difference]: Finished difference Result 3037 states and 4367 transitions. [2020-10-13 14:15:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 14:15:04,213 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:15:04,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:04,219 INFO L225 Difference]: With dead ends: 3037 [2020-10-13 14:15:04,219 INFO L226 Difference]: Without dead ends: 3018 [2020-10-13 14:15:04,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 14:15:04,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-10-13 14:15:04,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 403. [2020-10-13 14:15:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-13 14:15:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 532 transitions. [2020-10-13 14:15:04,371 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 532 transitions. Word has length 70 [2020-10-13 14:15:04,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:04,371 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 532 transitions. [2020-10-13 14:15:04,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 532 transitions. [2020-10-13 14:15:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:15:04,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:04,373 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] [2020-10-13 14:15:04,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:15:04,373 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:04,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:04,374 INFO L82 PathProgramCache]: Analyzing trace with hash -771898835, now seen corresponding path program 1 times [2020-10-13 14:15:04,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:04,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852424822] [2020-10-13 14:15:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:04,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:09,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:15:09,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:15:09,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:15:09,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:15:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:15:09,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:10,037 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:10,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:10,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:10,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:10,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:10,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:15:10,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:10,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852424822] [2020-10-13 14:15:10,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:10,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:10,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63067248] [2020-10-13 14:15:10,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:10,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:10,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:10,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:10,074 INFO L87 Difference]: Start difference. First operand 403 states and 532 transitions. Second operand 11 states. [2020-10-13 14:15:10,677 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 14:15:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:12,956 INFO L93 Difference]: Finished difference Result 1035 states and 1436 transitions. [2020-10-13 14:15:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:15:12,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:15:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:12,959 INFO L225 Difference]: With dead ends: 1035 [2020-10-13 14:15:12,959 INFO L226 Difference]: Without dead ends: 777 [2020-10-13 14:15:12,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:15:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-10-13 14:15:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 408. [2020-10-13 14:15:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-13 14:15:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 537 transitions. [2020-10-13 14:15:13,087 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 537 transitions. Word has length 70 [2020-10-13 14:15:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:13,088 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 537 transitions. [2020-10-13 14:15:13,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 537 transitions. [2020-10-13 14:15:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:15:13,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:13,089 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] [2020-10-13 14:15:13,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:15:13,089 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:13,090 INFO L82 PathProgramCache]: Analyzing trace with hash -456044659, now seen corresponding path program 1 times [2020-10-13 14:15:13,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:13,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094284824] [2020-10-13 14:15:13,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:13,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:14,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:17,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:18,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:18,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:15:18,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:15:18,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:15:18,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:15:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:15:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:18,742 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:18,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:18,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:18,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:18,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:18,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:18,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:15:18,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:18,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:18,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:18,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:18,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:18,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094284824] [2020-10-13 14:15:18,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:18,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:18,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544699078] [2020-10-13 14:15:18,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:18,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:18,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:18,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:18,778 INFO L87 Difference]: Start difference. First operand 408 states and 537 transitions. Second operand 11 states. [2020-10-13 14:15:19,444 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-13 14:15:22,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:22,900 INFO L93 Difference]: Finished difference Result 2566 states and 3676 transitions. [2020-10-13 14:15:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:15:22,900 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:15:22,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:22,904 INFO L225 Difference]: With dead ends: 2566 [2020-10-13 14:15:22,904 INFO L226 Difference]: Without dead ends: 2354 [2020-10-13 14:15:22,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=222, Invalid=900, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:15:22,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2020-10-13 14:15:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 408. [2020-10-13 14:15:23,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-13 14:15:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 536 transitions. [2020-10-13 14:15:23,055 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 536 transitions. Word has length 70 [2020-10-13 14:15:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:23,056 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 536 transitions. [2020-10-13 14:15:23,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 536 transitions. [2020-10-13 14:15:23,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:15:23,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:23,057 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] [2020-10-13 14:15:23,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:15:23,058 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:23,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:23,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1391911533, now seen corresponding path program 1 times [2020-10-13 14:15:23,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:23,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128678920] [2020-10-13 14:15:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:23,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:28,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:28,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:15:28,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:15:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:15:28,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:15:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:15:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:15:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:28,693 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:28,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:28,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:28,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:28,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:15:28,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:28,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128678920] [2020-10-13 14:15:28,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:28,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:15:28,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721645801] [2020-10-13 14:15:28,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:15:28,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:28,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:15:28,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:15:28,725 INFO L87 Difference]: Start difference. First operand 408 states and 536 transitions. Second operand 10 states. [2020-10-13 14:15:29,229 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:15:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:30,674 INFO L93 Difference]: Finished difference Result 777 states and 1064 transitions. [2020-10-13 14:15:30,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:15:30,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-13 14:15:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:30,677 INFO L225 Difference]: With dead ends: 777 [2020-10-13 14:15:30,677 INFO L226 Difference]: Without dead ends: 567 [2020-10-13 14:15:30,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:15:30,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-10-13 14:15:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 404. [2020-10-13 14:15:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-13 14:15:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 531 transitions. [2020-10-13 14:15:30,828 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 531 transitions. Word has length 70 [2020-10-13 14:15:30,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:30,829 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 531 transitions. [2020-10-13 14:15:30,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:15:30,829 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 531 transitions. [2020-10-13 14:15:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:15:30,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:30,831 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] [2020-10-13 14:15:30,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:15:30,831 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:30,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1980465196, now seen corresponding path program 1 times [2020-10-13 14:15:30,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:30,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161588894] [2020-10-13 14:15:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:30,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:35,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:35,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:35,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:15:35,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:15:35,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:15:35,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:15:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:15:35,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:36,524 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:36,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:36,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:36,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:36,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:36,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:36,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:15:36,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:36,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:36,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161588894] [2020-10-13 14:15:36,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:36,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:36,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173184098] [2020-10-13 14:15:36,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:36,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:36,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:36,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:36,560 INFO L87 Difference]: Start difference. First operand 404 states and 531 transitions. Second operand 11 states. [2020-10-13 14:15:37,066 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:15:39,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:39,802 INFO L93 Difference]: Finished difference Result 1637 states and 2318 transitions. [2020-10-13 14:15:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:15:39,803 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-13 14:15:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:39,804 INFO L225 Difference]: With dead ends: 1637 [2020-10-13 14:15:39,805 INFO L226 Difference]: Without dead ends: 1419 [2020-10-13 14:15:39,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:15:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-13 14:15:39,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 392. [2020-10-13 14:15:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-13 14:15:39,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 517 transitions. [2020-10-13 14:15:39,898 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 517 transitions. Word has length 71 [2020-10-13 14:15:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:39,898 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 517 transitions. [2020-10-13 14:15:39,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 517 transitions. [2020-10-13 14:15:39,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:15:39,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:39,899 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] [2020-10-13 14:15:39,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:15:39,899 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:39,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:39,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1607002353, now seen corresponding path program 1 times [2020-10-13 14:15:39,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:39,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903130148] [2020-10-13 14:15:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:40,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:40,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:41,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:41,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:42,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:43,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:44,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:44,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:15:44,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:15:44,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:15:44,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:15:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:15:44,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:45,509 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:45,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:45,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:45,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:45,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:45,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:15:45,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:45,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:45,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:45,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:45,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:45,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903130148] [2020-10-13 14:15:45,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:45,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:45,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564451818] [2020-10-13 14:15:45,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:45,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:45,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:45,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:45,543 INFO L87 Difference]: Start difference. First operand 392 states and 517 transitions. Second operand 11 states. [2020-10-13 14:15:46,053 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:15:48,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:48,181 INFO L93 Difference]: Finished difference Result 1437 states and 2026 transitions. [2020-10-13 14:15:48,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:15:48,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-13 14:15:48,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:48,183 INFO L225 Difference]: With dead ends: 1437 [2020-10-13 14:15:48,183 INFO L226 Difference]: Without dead ends: 1227 [2020-10-13 14:15:48,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:15:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2020-10-13 14:15:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 388. [2020-10-13 14:15:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-10-13 14:15:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 512 transitions. [2020-10-13 14:15:48,324 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 512 transitions. Word has length 71 [2020-10-13 14:15:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:48,325 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 512 transitions. [2020-10-13 14:15:48,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 512 transitions. [2020-10-13 14:15:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:15:48,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:48,326 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] [2020-10-13 14:15:48,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:15:48,326 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:48,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:48,327 INFO L82 PathProgramCache]: Analyzing trace with hash 568082580, now seen corresponding path program 1 times [2020-10-13 14:15:48,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:48,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005356170] [2020-10-13 14:15:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:48,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:51,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:51,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:15:53,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:15:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:15:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:15:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:15:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:15:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:53,924 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:53,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:53,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:53,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:15:53,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:53,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005356170] [2020-10-13 14:15:53,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:53,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:15:53,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526662054] [2020-10-13 14:15:53,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:15:53,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:53,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:15:53,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:15:53,961 INFO L87 Difference]: Start difference. First operand 388 states and 512 transitions. Second operand 10 states. [2020-10-13 14:15:54,456 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:15:56,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:56,653 INFO L93 Difference]: Finished difference Result 1083 states and 1531 transitions. [2020-10-13 14:15:56,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 14:15:56,655 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-13 14:15:56,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:56,656 INFO L225 Difference]: With dead ends: 1083 [2020-10-13 14:15:56,657 INFO L226 Difference]: Without dead ends: 876 [2020-10-13 14:15:56,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:15:56,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-13 14:15:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 387. [2020-10-13 14:15:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-13 14:15:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 510 transitions. [2020-10-13 14:15:56,749 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 510 transitions. Word has length 71 [2020-10-13 14:15:56,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:56,749 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 510 transitions. [2020-10-13 14:15:56,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:15:56,749 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 510 transitions. [2020-10-13 14:15:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:15:56,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:56,750 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] [2020-10-13 14:15:56,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:15:56,750 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:56,750 INFO L82 PathProgramCache]: Analyzing trace with hash -2011917774, now seen corresponding path program 1 times [2020-10-13 14:15:56,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:56,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249811620] [2020-10-13 14:15:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:56,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:01,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:01,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:16:01,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:16:01,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4306 [2020-10-13 14:16:01,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:01,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:16:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:16:01,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:01,719 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:16:01,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:01,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:01,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:16:01,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:01,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249811620] [2020-10-13 14:16:01,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:01,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:01,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030657135] [2020-10-13 14:16:01,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:01,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:01,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:01,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:01,753 INFO L87 Difference]: Start difference. First operand 387 states and 510 transitions. Second operand 11 states. [2020-10-13 14:16:02,260 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-13 14:16:04,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:04,108 INFO L93 Difference]: Finished difference Result 772 states and 1059 transitions. [2020-10-13 14:16:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 14:16:04,108 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-10-13 14:16:04,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:04,109 INFO L225 Difference]: With dead ends: 772 [2020-10-13 14:16:04,110 INFO L226 Difference]: Without dead ends: 748 [2020-10-13 14:16:04,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-10-13 14:16:04,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-13 14:16:04,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 389. [2020-10-13 14:16:04,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-13 14:16:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 513 transitions. [2020-10-13 14:16:04,237 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 513 transitions. Word has length 72 [2020-10-13 14:16:04,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:04,237 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 513 transitions. [2020-10-13 14:16:04,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:04,237 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 513 transitions. [2020-10-13 14:16:04,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:16:04,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:04,238 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] [2020-10-13 14:16:04,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:16:04,238 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:04,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:04,239 INFO L82 PathProgramCache]: Analyzing trace with hash -864699118, now seen corresponding path program 1 times [2020-10-13 14:16:04,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:04,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952843597] [2020-10-13 14:16:04,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:04,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:05,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:05,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:08,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:16:08,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:16:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4449 [2020-10-13 14:16:08,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 14:16:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:16:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:09,370 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:16:09,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:09,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:09,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:09,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:09,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:16:09,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:09,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952843597] [2020-10-13 14:16:09,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:09,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:09,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457942562] [2020-10-13 14:16:09,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:09,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:09,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:09,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:09,402 INFO L87 Difference]: Start difference. First operand 389 states and 513 transitions. Second operand 11 states. [2020-10-13 14:16:09,912 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-13 14:16:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:11,882 INFO L93 Difference]: Finished difference Result 1084 states and 1532 transitions. [2020-10-13 14:16:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 14:16:11,882 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-10-13 14:16:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:11,883 INFO L225 Difference]: With dead ends: 1084 [2020-10-13 14:16:11,883 INFO L226 Difference]: Without dead ends: 871 [2020-10-13 14:16:11,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-13 14:16:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-10-13 14:16:12,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 384. [2020-10-13 14:16:12,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-10-13 14:16:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 506 transitions. [2020-10-13 14:16:12,010 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 506 transitions. Word has length 72 [2020-10-13 14:16:12,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:12,011 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 506 transitions. [2020-10-13 14:16:12,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 506 transitions. [2020-10-13 14:16:12,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:16:12,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:12,012 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] [2020-10-13 14:16:12,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:16:12,012 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash 726269709, now seen corresponding path program 1 times [2020-10-13 14:16:12,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:12,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757648572] [2020-10-13 14:16:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:12,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:12,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking...