/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:46:31,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:46:31,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:46:31,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:46:31,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:46:31,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:46:31,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:46:31,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:46:31,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:46:31,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:46:31,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:46:31,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:46:31,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:46:31,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:46:31,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:46:31,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:46:31,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:46:31,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:46:31,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:46:31,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:46:31,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:46:31,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:46:31,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:46:31,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:46:31,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:46:31,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:46:31,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:46:31,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:46:31,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:46:31,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:46:31,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:46:31,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:46:31,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:46:31,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:46:31,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:46:31,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:46:31,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:46:31,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:46:31,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:46:31,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:46:31,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:46:31,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:46:31,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:46:31,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:46:31,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:46:31,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:46:31,265 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:46:31,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:46:31,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:46:31,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:46:31,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:46:31,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:46:31,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:46:31,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:46:31,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:46:31,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:46:31,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:46:31,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:46:31,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:46:31,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:46:31,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:46:31,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:46:31,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:46:31,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:46:31,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:46:31,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:46:31,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:46:31,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:46:31,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:46:31,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:46:31,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:46:31,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:46:31,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:46:31,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:46:31,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:46:31,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:46:31,582 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:46:31,583 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 08:46:31,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ffbca5bf/6b9512dcd6564534af8ee60d2c0b25b6/FLAGb099daaa4 [2020-10-14 08:46:32,215 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:46:32,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 08:46:32,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ffbca5bf/6b9512dcd6564534af8ee60d2c0b25b6/FLAGb099daaa4 [2020-10-14 08:46:32,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ffbca5bf/6b9512dcd6564534af8ee60d2c0b25b6 [2020-10-14 08:46:32,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:46:32,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:46:32,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:46:32,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:46:32,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:46:32,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:46:32" (1/1) ... [2020-10-14 08:46:32,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e26c411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:32, skipping insertion in model container [2020-10-14 08:46:32,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:46:32" (1/1) ... [2020-10-14 08:46:32,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:46:32,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:46:32,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:46:32,989 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:46:33,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:46:33,108 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:46:33,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:33 WrapperNode [2020-10-14 08:46:33,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:46:33,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:46:33,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:46:33,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:46:33,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:33" (1/1) ... [2020-10-14 08:46:33,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:33" (1/1) ... [2020-10-14 08:46:33,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:33" (1/1) ... [2020-10-14 08:46:33,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:33" (1/1) ... [2020-10-14 08:46:33,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:33" (1/1) ... [2020-10-14 08:46:33,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:33" (1/1) ... [2020-10-14 08:46:33,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:33" (1/1) ... [2020-10-14 08:46:33,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:46:33,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:46:33,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:46:33,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:46:33,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:46:33,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:46:33,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:46:33,246 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:46:33,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:46:33,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:46:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:46:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:46:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:46:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:46:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:46:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:46:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:46:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:46:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:46:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:46:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:46:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:46:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:46:33,249 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:46:33,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:46:33,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:46:33,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:46:34,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:46:34,008 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:46:34,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:46:34 BoogieIcfgContainer [2020-10-14 08:46:34,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:46:34,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:46:34,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:46:34,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:46:34,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:46:32" (1/3) ... [2020-10-14 08:46:34,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aaba8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:46:34, skipping insertion in model container [2020-10-14 08:46:34,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:46:33" (2/3) ... [2020-10-14 08:46:34,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aaba8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:46:34, skipping insertion in model container [2020-10-14 08:46:34,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:46:34" (3/3) ... [2020-10-14 08:46:34,024 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 08:46:34,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:46:34,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:46:34,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:46:34,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:46:34,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:46:34,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:46:34,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:46:34,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:46:34,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:46:34,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:46:34,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:46:34,116 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-10-14 08:46:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:46:34,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:34,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:34,129 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:34,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:34,136 INFO L82 PathProgramCache]: Analyzing trace with hash 289215473, now seen corresponding path program 1 times [2020-10-14 08:46:34,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:34,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830364799] [2020-10-14 08:46:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:34,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:34,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:34,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:35,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:35,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:39,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:39,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:46:39,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:46:39,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 08:46:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:39,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:46:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:46:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 08:46:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:46:39,848 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:46:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:39,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:39,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:39,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:39,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:39,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 08:46:39,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:39,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:39,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:39,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:39,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:46:39,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:39,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830364799] [2020-10-14 08:46:39,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:39,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:46:39,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575996373] [2020-10-14 08:46:39,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:46:39,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:39,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:46:39,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:46:39,978 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 6 states. [2020-10-14 08:46:40,291 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:46:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:41,332 INFO L93 Difference]: Finished difference Result 321 states and 527 transitions. [2020-10-14 08:46:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:46:41,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-14 08:46:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:41,350 INFO L225 Difference]: With dead ends: 321 [2020-10-14 08:46:41,350 INFO L226 Difference]: Without dead ends: 212 [2020-10-14 08:46:41,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:46:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-14 08:46:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2020-10-14 08:46:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 08:46:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 298 transitions. [2020-10-14 08:46:41,426 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 298 transitions. Word has length 80 [2020-10-14 08:46:41,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:41,427 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 298 transitions. [2020-10-14 08:46:41,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:46:41,427 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 298 transitions. [2020-10-14 08:46:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 08:46:41,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:41,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:41,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:46:41,431 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:41,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1221722817, now seen corresponding path program 1 times [2020-10-14 08:46:41,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:41,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991387474] [2020-10-14 08:46:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:41,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:41,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:42,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:42,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:43,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:44,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:45,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:45,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:46,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:46,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 08:46:46,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:46:46,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:46:46,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:46,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:46,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:46:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:46:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:46:46,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:46:46,746 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:46:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:46,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:46,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:46,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:46,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 08:46:46,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:46,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:46:46,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:46:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:46,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991387474] [2020-10-14 08:46:46,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:46,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:46:46,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561020641] [2020-10-14 08:46:46,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:46:46,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:46,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:46:46,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:46:46,816 INFO L87 Difference]: Start difference. First operand 210 states and 298 transitions. Second operand 6 states. [2020-10-14 08:46:47,019 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 08:46:47,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:47,754 INFO L93 Difference]: Finished difference Result 490 states and 732 transitions. [2020-10-14 08:46:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:46:47,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-14 08:46:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:47,762 INFO L225 Difference]: With dead ends: 490 [2020-10-14 08:46:47,763 INFO L226 Difference]: Without dead ends: 334 [2020-10-14 08:46:47,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:46:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-14 08:46:47,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 332. [2020-10-14 08:46:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-14 08:46:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 488 transitions. [2020-10-14 08:46:47,833 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 488 transitions. Word has length 81 [2020-10-14 08:46:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:47,834 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 488 transitions. [2020-10-14 08:46:47,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:46:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 488 transitions. [2020-10-14 08:46:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 08:46:47,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:47,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:47,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:46:47,838 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:47,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:47,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1820350400, now seen corresponding path program 1 times [2020-10-14 08:46:47,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:47,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826357998] [2020-10-14 08:46:47,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:48,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:49,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:49,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:52,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:52,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 08:46:52,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:46:52,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:46:52,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:52,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:46:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:46:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 08:46:52,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:53,060 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:46:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:53,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:53,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:53,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 08:46:53,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:53,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:46:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:53,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826357998] [2020-10-14 08:46:53,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:53,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:46:53,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062577877] [2020-10-14 08:46:53,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:46:53,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:53,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:46:53,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:46:53,117 INFO L87 Difference]: Start difference. First operand 332 states and 488 transitions. Second operand 6 states. [2020-10-14 08:46:53,293 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 08:46:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:53,873 INFO L93 Difference]: Finished difference Result 863 states and 1312 transitions. [2020-10-14 08:46:53,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:46:53,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-14 08:46:53,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:53,878 INFO L225 Difference]: With dead ends: 863 [2020-10-14 08:46:53,878 INFO L226 Difference]: Without dead ends: 581 [2020-10-14 08:46:53,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:46:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-14 08:46:53,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2020-10-14 08:46:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-14 08:46:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 871 transitions. [2020-10-14 08:46:53,938 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 871 transitions. Word has length 82 [2020-10-14 08:46:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:53,938 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 871 transitions. [2020-10-14 08:46:53,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:46:53,939 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 871 transitions. [2020-10-14 08:46:53,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 08:46:53,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:53,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:53,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:46:53,941 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:53,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:53,942 INFO L82 PathProgramCache]: Analyzing trace with hash 912674032, now seen corresponding path program 1 times [2020-10-14 08:46:53,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:53,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284980675] [2020-10-14 08:46:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:54,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:55,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:55,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:56,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:58,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:58,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 08:46:58,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:46:58,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 08:46:58,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:58,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:46:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:46:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 08:46:58,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:46:59,225 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:46:59,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:59,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:59,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:59,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:59,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:59,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 08:46:59,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:59,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:46:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:59,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284980675] [2020-10-14 08:46:59,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:59,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:46:59,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557211435] [2020-10-14 08:46:59,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:46:59,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:59,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:46:59,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:46:59,300 INFO L87 Difference]: Start difference. First operand 579 states and 871 transitions. Second operand 6 states. [2020-10-14 08:46:59,569 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 08:47:00,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:00,314 INFO L93 Difference]: Finished difference Result 1112 states and 1694 transitions. [2020-10-14 08:47:00,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:47:00,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-14 08:47:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:00,319 INFO L225 Difference]: With dead ends: 1112 [2020-10-14 08:47:00,319 INFO L226 Difference]: Without dead ends: 579 [2020-10-14 08:47:00,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:47:00,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-10-14 08:47:00,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2020-10-14 08:47:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-14 08:47:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 862 transitions. [2020-10-14 08:47:00,363 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 862 transitions. Word has length 83 [2020-10-14 08:47:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:00,363 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 862 transitions. [2020-10-14 08:47:00,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:47:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 862 transitions. [2020-10-14 08:47:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 08:47:00,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:00,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:00,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:47:00,366 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:00,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:00,367 INFO L82 PathProgramCache]: Analyzing trace with hash -391972721, now seen corresponding path program 1 times [2020-10-14 08:47:00,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:00,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742673048] [2020-10-14 08:47:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:00,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:01,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:01,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:02,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:05,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:05,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 08:47:05,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:47:05,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:47:05,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:05,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:47:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:47:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:47:05,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:05,596 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:47:05,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:05,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:05,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:05,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:47:05,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:05,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:47:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:47:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:47:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:05,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742673048] [2020-10-14 08:47:05,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:05,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:47:05,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105373807] [2020-10-14 08:47:05,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:47:05,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:47:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:47:05,660 INFO L87 Difference]: Start difference. First operand 579 states and 862 transitions. Second operand 6 states. [2020-10-14 08:47:05,887 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 08:47:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:06,703 INFO L93 Difference]: Finished difference Result 1626 states and 2470 transitions. [2020-10-14 08:47:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:47:06,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-14 08:47:06,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:06,713 INFO L225 Difference]: With dead ends: 1626 [2020-10-14 08:47:06,713 INFO L226 Difference]: Without dead ends: 1089 [2020-10-14 08:47:06,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:47:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-10-14 08:47:06,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1087. [2020-10-14 08:47:06,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-10-14 08:47:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1641 transitions. [2020-10-14 08:47:06,835 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1641 transitions. Word has length 84 [2020-10-14 08:47:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:06,835 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1641 transitions. [2020-10-14 08:47:06,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:47:06,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1641 transitions. [2020-10-14 08:47:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 08:47:06,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:06,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:06,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:47:06,842 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:06,843 INFO L82 PathProgramCache]: Analyzing trace with hash 246274847, now seen corresponding path program 1 times [2020-10-14 08:47:06,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:06,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026587382] [2020-10-14 08:47:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:06,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:07,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:08,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:11,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:11,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 08:47:11,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:47:11,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:47:11,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:11,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:11,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:47:11,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 08:47:11,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:47:11,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:12,043 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:47:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:12,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:12,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:12,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:12,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:47:12,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:12,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:12,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:47:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:12,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026587382] [2020-10-14 08:47:12,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:12,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:47:12,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424597369] [2020-10-14 08:47:12,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:47:12,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:12,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:47:12,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:47:12,078 INFO L87 Difference]: Start difference. First operand 1087 states and 1641 transitions. Second operand 4 states. [2020-10-14 08:47:12,225 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:47:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:13,055 INFO L93 Difference]: Finished difference Result 2958 states and 4499 transitions. [2020-10-14 08:47:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:47:13,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-14 08:47:13,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:13,070 INFO L225 Difference]: With dead ends: 2958 [2020-10-14 08:47:13,071 INFO L226 Difference]: Without dead ends: 2036 [2020-10-14 08:47:13,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:47:13,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2020-10-14 08:47:13,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 2034. [2020-10-14 08:47:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2034 states. [2020-10-14 08:47:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 3057 transitions. [2020-10-14 08:47:13,220 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 3057 transitions. Word has length 85 [2020-10-14 08:47:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:13,222 INFO L479 AbstractCegarLoop]: Abstraction has 2034 states and 3057 transitions. [2020-10-14 08:47:13,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:47:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 3057 transitions. [2020-10-14 08:47:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:47:13,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:13,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:13,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:47:13,225 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:13,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:13,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1483687590, now seen corresponding path program 1 times [2020-10-14 08:47:13,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:13,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808844989] [2020-10-14 08:47:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:13,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:13,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:14,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:14,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:16,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:16,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:18,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:18,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:47:18,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:47:18,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:47:18,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:18,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:47:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:47:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 08:47:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:18,422 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:47:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:18,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:18,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:18,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:18,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:18,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:47:18,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:18,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:18,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:18,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808844989] [2020-10-14 08:47:18,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:18,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:47:18,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497342210] [2020-10-14 08:47:18,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:47:18,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:18,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:47:18,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:47:18,455 INFO L87 Difference]: Start difference. First operand 2034 states and 3057 transitions. Second operand 6 states. [2020-10-14 08:47:18,666 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:47:19,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:19,575 INFO L93 Difference]: Finished difference Result 5459 states and 8252 transitions. [2020-10-14 08:47:19,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:47:19,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 08:47:19,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:19,602 INFO L225 Difference]: With dead ends: 5459 [2020-10-14 08:47:19,602 INFO L226 Difference]: Without dead ends: 3681 [2020-10-14 08:47:19,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:47:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2020-10-14 08:47:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2949. [2020-10-14 08:47:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2949 states. [2020-10-14 08:47:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4457 transitions. [2020-10-14 08:47:19,792 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4457 transitions. Word has length 87 [2020-10-14 08:47:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:19,792 INFO L479 AbstractCegarLoop]: Abstraction has 2949 states and 4457 transitions. [2020-10-14 08:47:19,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:47:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4457 transitions. [2020-10-14 08:47:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:47:19,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:19,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:19,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:47:19,795 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:19,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:19,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1884842097, now seen corresponding path program 1 times [2020-10-14 08:47:19,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:19,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174935469] [2020-10-14 08:47:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:19,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:20,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:20,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:22,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:22,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:22,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:24,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:24,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:47:24,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:47:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-14 08:47:24,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:24,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:47:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:47:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 08:47:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:25,097 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:47:25,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:25,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:25,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:25,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:25,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:25,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:47:25,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:25,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:25,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174935469] [2020-10-14 08:47:25,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:25,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:47:25,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779812364] [2020-10-14 08:47:25,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:47:25,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:25,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:47:25,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:47:25,129 INFO L87 Difference]: Start difference. First operand 2949 states and 4457 transitions. Second operand 6 states. [2020-10-14 08:47:25,307 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:47:26,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:26,271 INFO L93 Difference]: Finished difference Result 8809 states and 13339 transitions. [2020-10-14 08:47:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:47:26,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 08:47:26,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:26,303 INFO L225 Difference]: With dead ends: 8809 [2020-10-14 08:47:26,303 INFO L226 Difference]: Without dead ends: 6111 [2020-10-14 08:47:26,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:47:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6111 states. [2020-10-14 08:47:26,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6111 to 4907. [2020-10-14 08:47:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4907 states. [2020-10-14 08:47:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 7448 transitions. [2020-10-14 08:47:26,583 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 7448 transitions. Word has length 87 [2020-10-14 08:47:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:26,583 INFO L479 AbstractCegarLoop]: Abstraction has 4907 states and 7448 transitions. [2020-10-14 08:47:26,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:47:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 7448 transitions. [2020-10-14 08:47:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:47:26,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:26,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:26,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:47:26,587 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:26,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:26,587 INFO L82 PathProgramCache]: Analyzing trace with hash 484248869, now seen corresponding path program 1 times [2020-10-14 08:47:26,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:26,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602258267] [2020-10-14 08:47:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:26,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:26,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:26,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:27,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:30,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:31,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:31,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:47:31,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:47:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:47:31,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:31,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:47:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:47:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 08:47:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:31,786 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:47:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:31,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:31,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:31,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:47:31,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:31,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:31,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602258267] [2020-10-14 08:47:31,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:31,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:47:31,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495238297] [2020-10-14 08:47:31,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:47:31,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:31,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:47:31,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:47:31,818 INFO L87 Difference]: Start difference. First operand 4907 states and 7448 transitions. Second operand 6 states. [2020-10-14 08:47:32,015 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:47:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:32,875 INFO L93 Difference]: Finished difference Result 11813 states and 17899 transitions. [2020-10-14 08:47:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:47:32,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 08:47:32,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:32,910 INFO L225 Difference]: With dead ends: 11813 [2020-10-14 08:47:32,910 INFO L226 Difference]: Without dead ends: 7275 [2020-10-14 08:47:32,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:47:32,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7275 states. [2020-10-14 08:47:33,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7275 to 5855. [2020-10-14 08:47:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5855 states. [2020-10-14 08:47:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5855 states to 5855 states and 8896 transitions. [2020-10-14 08:47:33,263 INFO L78 Accepts]: Start accepts. Automaton has 5855 states and 8896 transitions. Word has length 87 [2020-10-14 08:47:33,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:33,263 INFO L479 AbstractCegarLoop]: Abstraction has 5855 states and 8896 transitions. [2020-10-14 08:47:33,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:47:33,264 INFO L276 IsEmpty]: Start isEmpty. Operand 5855 states and 8896 transitions. [2020-10-14 08:47:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:47:33,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:33,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:33,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:47:33,268 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:33,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1500358757, now seen corresponding path program 1 times [2020-10-14 08:47:33,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:33,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662364998] [2020-10-14 08:47:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:33,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:33,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:33,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:34,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:36,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:36,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:36,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:37,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:38,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:38,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:47:38,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:47:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:47:38,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:38,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:47:38,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 08:47:38,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:47:38,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:38,518 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:47:38,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:38,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:38,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:38,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:38,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:47:38,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:38,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:47:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:38,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662364998] [2020-10-14 08:47:38,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:38,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:47:38,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412602960] [2020-10-14 08:47:38,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:47:38,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:38,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:47:38,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:47:38,557 INFO L87 Difference]: Start difference. First operand 5855 states and 8896 transitions. Second operand 4 states. [2020-10-14 08:47:38,726 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:47:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:39,442 INFO L93 Difference]: Finished difference Result 12235 states and 18642 transitions. [2020-10-14 08:47:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:47:39,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 08:47:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:39,473 INFO L225 Difference]: With dead ends: 12235 [2020-10-14 08:47:39,473 INFO L226 Difference]: Without dead ends: 6777 [2020-10-14 08:47:39,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:47:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6777 states. [2020-10-14 08:47:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6777 to 6775. [2020-10-14 08:47:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6775 states. [2020-10-14 08:47:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6775 states to 6775 states and 10272 transitions. [2020-10-14 08:47:39,812 INFO L78 Accepts]: Start accepts. Automaton has 6775 states and 10272 transitions. Word has length 87 [2020-10-14 08:47:39,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:39,812 INFO L479 AbstractCegarLoop]: Abstraction has 6775 states and 10272 transitions. [2020-10-14 08:47:39,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:47:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6775 states and 10272 transitions. [2020-10-14 08:47:39,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:47:39,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:39,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:39,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:47:39,815 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:39,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1705350628, now seen corresponding path program 1 times [2020-10-14 08:47:39,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:39,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335028502] [2020-10-14 08:47:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:39,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:40,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:41,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:41,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:41,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:42,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:43,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:44,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:44,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:47:44,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:47:44,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:47:44,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:44,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:47:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 08:47:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:47:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:44,979 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:47:44,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:44,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:44,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:44,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:47:44,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:44,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:44,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:45,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335028502] [2020-10-14 08:47:45,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:45,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:47:45,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562312753] [2020-10-14 08:47:45,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:47:45,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:45,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:47:45,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:47:45,004 INFO L87 Difference]: Start difference. First operand 6775 states and 10272 transitions. Second operand 4 states. [2020-10-14 08:47:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:45,998 INFO L93 Difference]: Finished difference Result 18811 states and 28402 transitions. [2020-10-14 08:47:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:47:45,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 08:47:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:46,029 INFO L225 Difference]: With dead ends: 18811 [2020-10-14 08:47:46,029 INFO L226 Difference]: Without dead ends: 12433 [2020-10-14 08:47:46,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:47:46,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12433 states. [2020-10-14 08:47:46,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12433 to 12431. [2020-10-14 08:47:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12431 states. [2020-10-14 08:47:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12431 states to 12431 states and 18496 transitions. [2020-10-14 08:47:46,782 INFO L78 Accepts]: Start accepts. Automaton has 12431 states and 18496 transitions. Word has length 87 [2020-10-14 08:47:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:46,783 INFO L479 AbstractCegarLoop]: Abstraction has 12431 states and 18496 transitions. [2020-10-14 08:47:46,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:47:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 12431 states and 18496 transitions. [2020-10-14 08:47:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:47:46,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:46,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:46,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:47:46,786 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:46,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:46,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1975286226, now seen corresponding path program 1 times [2020-10-14 08:47:46,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:46,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282429952] [2020-10-14 08:47:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:46,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:46,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:47,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:47,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:47,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:47,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:47,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:48,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:49,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:51,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:51,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:47:51,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:47:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:47:51,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:51,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:47:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 08:47:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:47:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:51,967 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:47:51,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:51,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:51,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:51,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:51,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:51,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:47:51,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:51,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:51,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282429952] [2020-10-14 08:47:51,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:51,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:47:51,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704902728] [2020-10-14 08:47:51,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:47:51,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:51,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:47:51,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:47:51,994 INFO L87 Difference]: Start difference. First operand 12431 states and 18496 transitions. Second operand 6 states. [2020-10-14 08:47:52,183 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:47:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:53,486 INFO L93 Difference]: Finished difference Result 28485 states and 42291 transitions. [2020-10-14 08:47:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:47:53,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 08:47:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:53,518 INFO L225 Difference]: With dead ends: 28485 [2020-10-14 08:47:53,518 INFO L226 Difference]: Without dead ends: 16451 [2020-10-14 08:47:53,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:47:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16451 states. [2020-10-14 08:47:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16451 to 14167. [2020-10-14 08:47:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14167 states. [2020-10-14 08:47:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14167 states to 14167 states and 21080 transitions. [2020-10-14 08:47:54,370 INFO L78 Accepts]: Start accepts. Automaton has 14167 states and 21080 transitions. Word has length 87 [2020-10-14 08:47:54,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:54,371 INFO L479 AbstractCegarLoop]: Abstraction has 14167 states and 21080 transitions. [2020-10-14 08:47:54,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:47:54,371 INFO L276 IsEmpty]: Start isEmpty. Operand 14167 states and 21080 transitions. [2020-10-14 08:47:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:47:54,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:54,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:54,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:47:54,373 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:54,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:54,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1758674876, now seen corresponding path program 1 times [2020-10-14 08:47:54,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:54,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976448652] [2020-10-14 08:47:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:54,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:54,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:54,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:59,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:59,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:47:59,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:47:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:47:59,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:59,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:47:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:47:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 08:47:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:59,568 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:47:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:59,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:59,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:59,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:59,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:59,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:47:59,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:59,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:59,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:59,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976448652] [2020-10-14 08:47:59,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:59,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:47:59,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580558592] [2020-10-14 08:47:59,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:47:59,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:59,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:47:59,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:47:59,601 INFO L87 Difference]: Start difference. First operand 14167 states and 21080 transitions. Second operand 6 states. [2020-10-14 08:47:59,783 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:48:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:48:01,013 INFO L93 Difference]: Finished difference Result 32715 states and 48555 transitions. [2020-10-14 08:48:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:48:01,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 08:48:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:48:01,040 INFO L225 Difference]: With dead ends: 32715 [2020-10-14 08:48:01,041 INFO L226 Difference]: Without dead ends: 18953 [2020-10-14 08:48:01,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:48:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18953 states. [2020-10-14 08:48:01,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18953 to 15933. [2020-10-14 08:48:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15933 states. [2020-10-14 08:48:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15933 states to 15933 states and 23712 transitions. [2020-10-14 08:48:01,969 INFO L78 Accepts]: Start accepts. Automaton has 15933 states and 23712 transitions. Word has length 87 [2020-10-14 08:48:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:48:01,969 INFO L479 AbstractCegarLoop]: Abstraction has 15933 states and 23712 transitions. [2020-10-14 08:48:01,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:48:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 15933 states and 23712 transitions. [2020-10-14 08:48:01,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 08:48:01,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:48:01,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:48:01,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:48:01,972 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:48:01,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:48:01,973 INFO L82 PathProgramCache]: Analyzing trace with hash 731609511, now seen corresponding path program 1 times [2020-10-14 08:48:01,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:48:01,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958580627] [2020-10-14 08:48:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:48:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:02,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:02,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:02,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:03,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:04,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:04,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:05,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:06,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:07,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:07,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 08:48:07,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:48:07,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:48:07,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:07,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:48:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 08:48:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:48:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:07,194 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:48:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:07,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:07,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:07,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:07,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:07,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:48:07,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:07,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:48:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:48:07,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:48:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:07,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958580627] [2020-10-14 08:48:07,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:48:07,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:48:07,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754758479] [2020-10-14 08:48:07,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:48:07,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:07,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:48:07,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:48:07,233 INFO L87 Difference]: Start difference. First operand 15933 states and 23712 transitions. Second operand 5 states. [2020-10-14 08:48:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:48:08,878 INFO L93 Difference]: Finished difference Result 25847 states and 38385 transitions. [2020-10-14 08:48:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:48:08,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-14 08:48:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:48:08,937 INFO L225 Difference]: With dead ends: 25847 [2020-10-14 08:48:08,938 INFO L226 Difference]: Without dead ends: 25845 [2020-10-14 08:48:08,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:48:08,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25845 states. [2020-10-14 08:48:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25845 to 15965. [2020-10-14 08:48:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15965 states. [2020-10-14 08:48:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15965 states to 15965 states and 23632 transitions. [2020-10-14 08:48:10,111 INFO L78 Accepts]: Start accepts. Automaton has 15965 states and 23632 transitions. Word has length 88 [2020-10-14 08:48:10,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:48:10,111 INFO L479 AbstractCegarLoop]: Abstraction has 15965 states and 23632 transitions. [2020-10-14 08:48:10,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:48:10,111 INFO L276 IsEmpty]: Start isEmpty. Operand 15965 states and 23632 transitions. [2020-10-14 08:48:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 08:48:10,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:48:10,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:48:10,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:48:10,115 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:48:10,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:48:10,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1131699549, now seen corresponding path program 1 times [2020-10-14 08:48:10,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:48:10,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411115539] [2020-10-14 08:48:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:48:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:10,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:10,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:10,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:14,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:15,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:15,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 08:48:15,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:48:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:48:15,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:15,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:48:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:48:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 08:48:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:15,314 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:48:15,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:15,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:15,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:15,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:15,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:15,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:48:15,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:15,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:48:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:48:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:15,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411115539] [2020-10-14 08:48:15,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:48:15,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:48:15,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083747251] [2020-10-14 08:48:15,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:48:15,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:15,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:48:15,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:48:15,347 INFO L87 Difference]: Start difference. First operand 15965 states and 23632 transitions. Second operand 5 states. [2020-10-14 08:48:15,513 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 08:48:17,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:48:17,362 INFO L93 Difference]: Finished difference Result 37653 states and 55830 transitions. [2020-10-14 08:48:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:48:17,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-14 08:48:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:48:17,385 INFO L225 Difference]: With dead ends: 37653 [2020-10-14 08:48:17,386 INFO L226 Difference]: Without dead ends: 22131 [2020-10-14 08:48:17,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:48:17,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22131 states. [2020-10-14 08:48:18,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22131 to 22129. [2020-10-14 08:48:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22129 states. [2020-10-14 08:48:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22129 states to 22129 states and 32700 transitions. [2020-10-14 08:48:18,552 INFO L78 Accepts]: Start accepts. Automaton has 22129 states and 32700 transitions. Word has length 88 [2020-10-14 08:48:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:48:18,552 INFO L479 AbstractCegarLoop]: Abstraction has 22129 states and 32700 transitions. [2020-10-14 08:48:18,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:48:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 22129 states and 32700 transitions. [2020-10-14 08:48:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 08:48:18,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:48:18,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:48:18,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:48:18,555 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:48:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:48:18,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2068566794, now seen corresponding path program 1 times [2020-10-14 08:48:18,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:48:18,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28659130] [2020-10-14 08:48:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:48:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:18,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:18,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:19,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:19,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:21,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:23,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:23,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 08:48:23,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:48:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:48:23,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:23,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:48:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:48:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 08:48:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:23,883 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:48:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:23,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:23,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:23,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:23,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:23,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:48:23,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:23,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:23,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:48:23,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:48:23,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:23,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28659130] [2020-10-14 08:48:23,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:48:23,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:48:23,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428972345] [2020-10-14 08:48:23,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:48:23,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:23,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:48:23,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:48:23,928 INFO L87 Difference]: Start difference. First operand 22129 states and 32700 transitions. Second operand 11 states. [2020-10-14 08:48:24,150 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 08:48:27,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:48:27,292 INFO L93 Difference]: Finished difference Result 55279 states and 81481 transitions. [2020-10-14 08:48:27,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:48:27,293 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 89 [2020-10-14 08:48:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:48:27,337 INFO L225 Difference]: With dead ends: 55279 [2020-10-14 08:48:27,338 INFO L226 Difference]: Without dead ends: 33483 [2020-10-14 08:48:27,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:48:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33483 states. [2020-10-14 08:48:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33483 to 22129. [2020-10-14 08:48:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22129 states. [2020-10-14 08:48:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22129 states to 22129 states and 32685 transitions. [2020-10-14 08:48:29,042 INFO L78 Accepts]: Start accepts. Automaton has 22129 states and 32685 transitions. Word has length 89 [2020-10-14 08:48:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:48:29,042 INFO L479 AbstractCegarLoop]: Abstraction has 22129 states and 32685 transitions. [2020-10-14 08:48:29,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:48:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 22129 states and 32685 transitions. [2020-10-14 08:48:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 08:48:29,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:48:29,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:48:29,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:48:29,045 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:48:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:48:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash 142690464, now seen corresponding path program 1 times [2020-10-14 08:48:29,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:48:29,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654122952] [2020-10-14 08:48:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:48:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:29,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:29,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:29,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:30,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:30,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:31,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:33,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:34,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:34,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 08:48:34,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:48:34,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:48:34,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:34,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:48:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:48:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 08:48:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:34,368 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:48:34,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:34,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:34,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:34,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:34,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:34,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:48:34,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:34,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:34,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:48:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:48:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:34,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654122952] [2020-10-14 08:48:34,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:48:34,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:48:34,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269998074] [2020-10-14 08:48:34,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:48:34,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:34,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:48:34,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:48:34,420 INFO L87 Difference]: Start difference. First operand 22129 states and 32685 transitions. Second operand 11 states. [2020-10-14 08:48:34,640 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 08:48:38,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:48:38,844 INFO L93 Difference]: Finished difference Result 66696 states and 98190 transitions. [2020-10-14 08:48:38,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:48:38,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 89 [2020-10-14 08:48:38,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:48:38,896 INFO L225 Difference]: With dead ends: 66696 [2020-10-14 08:48:38,897 INFO L226 Difference]: Without dead ends: 44870 [2020-10-14 08:48:38,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:48:38,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44870 states. [2020-10-14 08:48:41,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44870 to 22129. [2020-10-14 08:48:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22129 states. [2020-10-14 08:48:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22129 states to 22129 states and 32679 transitions. [2020-10-14 08:48:41,705 INFO L78 Accepts]: Start accepts. Automaton has 22129 states and 32679 transitions. Word has length 89 [2020-10-14 08:48:41,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:48:41,705 INFO L479 AbstractCegarLoop]: Abstraction has 22129 states and 32679 transitions. [2020-10-14 08:48:41,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:48:41,705 INFO L276 IsEmpty]: Start isEmpty. Operand 22129 states and 32679 transitions. [2020-10-14 08:48:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 08:48:41,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:48:41,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:48:41,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:48:41,708 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:48:41,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:48:41,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2127086326, now seen corresponding path program 1 times [2020-10-14 08:48:41,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:48:41,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010529079] [2020-10-14 08:48:41,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:48:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:42,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:42,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:44,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:46,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:46,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 08:48:46,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:48:46,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:48:46,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:46,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:46,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:48:46,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:48:46,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 08:48:46,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:47,117 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:48:47,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:47,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:47,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:47,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:47,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:48:47,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:47,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:47,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:48:47,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:47,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:48:47,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:47,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010529079] [2020-10-14 08:48:47,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:48:47,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:48:47,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452153691] [2020-10-14 08:48:47,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:48:47,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:47,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:48:47,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:48:47,149 INFO L87 Difference]: Start difference. First operand 22129 states and 32679 transitions. Second operand 10 states. [2020-10-14 08:48:47,330 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 08:48:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:48:51,340 INFO L93 Difference]: Finished difference Result 54371 states and 80324 transitions. [2020-10-14 08:48:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:48:51,341 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-10-14 08:48:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:48:51,386 INFO L225 Difference]: With dead ends: 54371 [2020-10-14 08:48:51,386 INFO L226 Difference]: Without dead ends: 33041 [2020-10-14 08:48:51,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-14 08:48:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33041 states. [2020-10-14 08:48:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33041 to 22095. [2020-10-14 08:48:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22095 states. [2020-10-14 08:48:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22095 states to 22095 states and 32615 transitions. [2020-10-14 08:48:53,728 INFO L78 Accepts]: Start accepts. Automaton has 22095 states and 32615 transitions. Word has length 89 [2020-10-14 08:48:53,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:48:53,728 INFO L479 AbstractCegarLoop]: Abstraction has 22095 states and 32615 transitions. [2020-10-14 08:48:53,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:48:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 22095 states and 32615 transitions. [2020-10-14 08:48:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 08:48:53,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:48:53,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:48:53,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:48:53,731 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:48:53,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:48:53,731 INFO L82 PathProgramCache]: Analyzing trace with hash 709611333, now seen corresponding path program 1 times [2020-10-14 08:48:53,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:48:53,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82637619] [2020-10-14 08:48:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:48:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:54,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:55,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:55,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:55,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:55,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:58,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:58,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 08:48:58,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:48:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:48:58,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:58,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:48:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:48:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 08:48:58,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:59,023 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:48:59,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:59,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:59,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:59,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:48:59,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:59,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:48:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:48:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:59,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82637619] [2020-10-14 08:48:59,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:48:59,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:48:59,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551088105] [2020-10-14 08:48:59,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:48:59,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:59,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:48:59,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:48:59,059 INFO L87 Difference]: Start difference. First operand 22095 states and 32615 transitions. Second operand 11 states. [2020-10-14 08:48:59,256 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:49:05,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:49:05,731 INFO L93 Difference]: Finished difference Result 66398 states and 97625 transitions. [2020-10-14 08:49:05,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 08:49:05,732 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 90 [2020-10-14 08:49:05,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:49:05,798 INFO L225 Difference]: With dead ends: 66398 [2020-10-14 08:49:05,798 INFO L226 Difference]: Without dead ends: 44514 [2020-10-14 08:49:05,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2020-10-14 08:49:05,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44514 states. [2020-10-14 08:49:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44514 to 22095. [2020-10-14 08:49:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22095 states. [2020-10-14 08:49:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22095 states to 22095 states and 32612 transitions. [2020-10-14 08:49:08,459 INFO L78 Accepts]: Start accepts. Automaton has 22095 states and 32612 transitions. Word has length 90 [2020-10-14 08:49:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:49:08,459 INFO L479 AbstractCegarLoop]: Abstraction has 22095 states and 32612 transitions. [2020-10-14 08:49:08,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:49:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 22095 states and 32612 transitions. [2020-10-14 08:49:08,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 08:49:08,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:49:08,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:49:08,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:49:08,462 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:49:08,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:49:08,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1485289232, now seen corresponding path program 1 times [2020-10-14 08:49:08,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:49:08,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490128059] [2020-10-14 08:49:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:49:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:08,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:10,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:13,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:13,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 08:49:13,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:49:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:49:13,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:13,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:49:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:49:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 08:49:13,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:49:13,814 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:49:13,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:49:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:13,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:13,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:49:13,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:49:13,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:49:13,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:13,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:13,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:49:13,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:49:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:49:13,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:49:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:49:13,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490128059] [2020-10-14 08:49:13,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:49:13,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:49:13,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009267008] [2020-10-14 08:49:13,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:49:13,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:49:13,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:49:13,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:49:13,855 INFO L87 Difference]: Start difference. First operand 22095 states and 32612 transitions. Second operand 10 states. [2020-10-14 08:49:14,037 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 08:49:20,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:49:20,938 INFO L93 Difference]: Finished difference Result 65217 states and 96379 transitions. [2020-10-14 08:49:20,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:49:20,938 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-10-14 08:49:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:49:20,987 INFO L225 Difference]: With dead ends: 65217 [2020-10-14 08:49:20,987 INFO L226 Difference]: Without dead ends: 43867 [2020-10-14 08:49:21,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:49:21,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43867 states. [2020-10-14 08:49:24,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43867 to 22040. [2020-10-14 08:49:24,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22040 states. [2020-10-14 08:49:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22040 states to 22040 states and 32530 transitions. [2020-10-14 08:49:24,253 INFO L78 Accepts]: Start accepts. Automaton has 22040 states and 32530 transitions. Word has length 90 [2020-10-14 08:49:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:49:24,253 INFO L479 AbstractCegarLoop]: Abstraction has 22040 states and 32530 transitions. [2020-10-14 08:49:24,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:49:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 22040 states and 32530 transitions. [2020-10-14 08:49:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 08:49:24,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:49:24,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:49:24,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:49:24,256 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:49:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:49:24,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1880997100, now seen corresponding path program 1 times [2020-10-14 08:49:24,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:49:24,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92034785] [2020-10-14 08:49:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:49:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:24,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:24,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:29,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:29,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 08:49:29,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:49:29,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:49:29,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:29,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:29,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:49:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:49:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:49:29,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:49:29,560 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:49:29,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:49:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:29,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:29,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:49:29,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:49:29,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:49:29,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:29,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:49:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:49:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:49:29,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:49:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:49:29,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92034785] [2020-10-14 08:49:29,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:49:29,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:49:29,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041493667] [2020-10-14 08:49:29,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:49:29,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:49:29,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:49:29,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:49:29,614 INFO L87 Difference]: Start difference. First operand 22040 states and 32530 transitions. Second operand 11 states. [2020-10-14 08:49:29,813 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:49:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:49:39,553 INFO L93 Difference]: Finished difference Result 76586 states and 113053 transitions. [2020-10-14 08:49:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 08:49:39,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2020-10-14 08:49:39,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:49:39,622 INFO L225 Difference]: With dead ends: 76586 [2020-10-14 08:49:39,622 INFO L226 Difference]: Without dead ends: 54876 [2020-10-14 08:49:39,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2020-10-14 08:49:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54876 states. [2020-10-14 08:49:43,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54876 to 22040. [2020-10-14 08:49:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22040 states. [2020-10-14 08:49:43,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22040 states to 22040 states and 32506 transitions. [2020-10-14 08:49:43,476 INFO L78 Accepts]: Start accepts. Automaton has 22040 states and 32506 transitions. Word has length 91 [2020-10-14 08:49:43,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:49:43,476 INFO L479 AbstractCegarLoop]: Abstraction has 22040 states and 32506 transitions. [2020-10-14 08:49:43,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:49:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 22040 states and 32506 transitions. [2020-10-14 08:49:43,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 08:49:43,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:49:43,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:49:43,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:49:43,478 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:49:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:49:43,478 INFO L82 PathProgramCache]: Analyzing trace with hash -802570520, now seen corresponding path program 1 times [2020-10-14 08:49:43,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:49:43,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769405214] [2020-10-14 08:49:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:49:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:43,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:44,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:45,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:46,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:48,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 08:49:48,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:49:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:49:48,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:48,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:49:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:49:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 08:49:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:49:48,858 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:49:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:49:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:48,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:48,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:49:48,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:49:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:49:48,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:48,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:49:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:49:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:49:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:49:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:49:48,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769405214] [2020-10-14 08:49:48,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:49:48,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:49:48,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94283465] [2020-10-14 08:49:48,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:49:48,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:49:48,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:49:48,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:49:48,888 INFO L87 Difference]: Start difference. First operand 22040 states and 32506 transitions. Second operand 10 states. [2020-10-14 08:49:49,068 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:49:56,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:49:56,324 INFO L93 Difference]: Finished difference Result 54264 states and 80124 transitions. [2020-10-14 08:49:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:49:56,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-14 08:49:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:49:56,360 INFO L225 Difference]: With dead ends: 54264 [2020-10-14 08:49:56,360 INFO L226 Difference]: Without dead ends: 32974 [2020-10-14 08:49:56,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:49:56,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32974 states. [2020-10-14 08:50:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32974 to 22028. [2020-10-14 08:50:01,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22028 states. [2020-10-14 08:50:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22028 states to 22028 states and 32470 transitions. [2020-10-14 08:50:01,246 INFO L78 Accepts]: Start accepts. Automaton has 22028 states and 32470 transitions. Word has length 91 [2020-10-14 08:50:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:50:01,246 INFO L479 AbstractCegarLoop]: Abstraction has 22028 states and 32470 transitions. [2020-10-14 08:50:01,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:50:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand 22028 states and 32470 transitions. [2020-10-14 08:50:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 08:50:01,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:50:01,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:50:01,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:50:01,248 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:50:01,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:50:01,248 INFO L82 PathProgramCache]: Analyzing trace with hash -261723642, now seen corresponding path program 1 times [2020-10-14 08:50:01,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:50:01,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470584849] [2020-10-14 08:50:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:50:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:05,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:05,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 08:50:05,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:50:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4294 [2020-10-14 08:50:05,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:05,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:50:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:50:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 08:50:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:05,932 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:50:05,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:50:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:05,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:05,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:05,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:50:05,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:50:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:50:05,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:05,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:50:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:50:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:50:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:50:05,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470584849] [2020-10-14 08:50:05,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:50:05,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:50:05,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991384824] [2020-10-14 08:50:05,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:50:05,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:50:05,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:50:05,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:50:05,969 INFO L87 Difference]: Start difference. First operand 22028 states and 32470 transitions. Second operand 10 states. [2020-10-14 08:50:06,164 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:50:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:50:13,862 INFO L93 Difference]: Finished difference Result 53988 states and 79637 transitions. [2020-10-14 08:50:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:50:13,863 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-14 08:50:13,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:50:13,898 INFO L225 Difference]: With dead ends: 53988 [2020-10-14 08:50:13,898 INFO L226 Difference]: Without dead ends: 32585 [2020-10-14 08:50:13,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:50:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32585 states.