/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:25:38,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:25:38,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:25:38,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:25:38,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:25:38,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:25:38,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:25:38,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:25:38,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:25:38,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:25:38,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:25:38,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:25:38,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:25:38,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:25:38,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:25:38,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:25:38,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:25:38,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:25:38,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:25:38,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:25:38,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:25:38,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:25:38,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:25:38,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:25:38,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:25:38,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:25:38,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:25:38,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:25:38,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:25:38,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:25:38,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:25:38,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:25:38,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:25:38,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:25:38,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:25:38,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:25:38,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:25:38,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:25:38,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:25:38,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:25:38,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:25:38,212 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 [2020-10-15 03:25:38,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:25:38,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:25:38,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:25:38,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:25:38,236 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:25:38,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:25:38,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:25:38,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:25:38,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:25:38,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:25:38,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:25:38,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:25:38,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:25:38,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:25:38,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:25:38,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:25:38,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:25:38,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:25:38,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:25:38,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:25:38,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:25:38,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:25:38,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:25:38,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:25:38,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:25:38,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:25:38,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:25:38,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:25:38,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:25:38,241 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:25:38,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:25:38,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:25:38,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:25:38,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:25:38,557 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:25:38,557 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:25:38,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e229e4ec5/3ced489ab046410dbb328d0d61dd4596/FLAGd2b22187d [2020-10-15 03:25:39,164 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:25:39,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:25:39,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e229e4ec5/3ced489ab046410dbb328d0d61dd4596/FLAGd2b22187d [2020-10-15 03:25:39,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e229e4ec5/3ced489ab046410dbb328d0d61dd4596 [2020-10-15 03:25:39,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:25:39,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:25:39,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:25:39,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:25:39,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:25:39,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:25:39" (1/1) ... [2020-10-15 03:25:39,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4122bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:39, skipping insertion in model container [2020-10-15 03:25:39,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:25:39" (1/1) ... [2020-10-15 03:25:39,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:25:39,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:25:39,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:25:39,995 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:25:40,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:25:40,111 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:25:40,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:40 WrapperNode [2020-10-15 03:25:40,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:25:40,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:25:40,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:25:40,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:25:40,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:40" (1/1) ... [2020-10-15 03:25:40,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:40" (1/1) ... [2020-10-15 03:25:40,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:40" (1/1) ... [2020-10-15 03:25:40,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:40" (1/1) ... [2020-10-15 03:25:40,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:40" (1/1) ... [2020-10-15 03:25:40,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:40" (1/1) ... [2020-10-15 03:25:40,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:40" (1/1) ... [2020-10-15 03:25:40,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:25:40,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:25:40,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:25:40,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:25:40,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:40" (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 [2020-10-15 03:25:40,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:25:40,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:25:40,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:25:40,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:25:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:25:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:25:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:25:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:25:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:25:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:25:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:25:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:25:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:25:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:25:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:25:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:25:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:25:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:25:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:25:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:25:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:25:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:25:41,022 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:25:41,022 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:25:41,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:25:41 BoogieIcfgContainer [2020-10-15 03:25:41,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:25:41,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:25:41,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:25:41,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:25:41,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:25:39" (1/3) ... [2020-10-15 03:25:41,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218b5f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:25:41, skipping insertion in model container [2020-10-15 03:25:41,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:40" (2/3) ... [2020-10-15 03:25:41,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218b5f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:25:41, skipping insertion in model container [2020-10-15 03:25:41,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:25:41" (3/3) ... [2020-10-15 03:25:41,037 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:25:41,048 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:25:41,057 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:25:41,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:25:41,099 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:25:41,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:25:41,099 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:25:41,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:25:41,100 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:25:41,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:25:41,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:25:41,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:25:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-10-15 03:25:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 03:25:41,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:41,136 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] [2020-10-15 03:25:41,136 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:41,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:41,143 INFO L82 PathProgramCache]: Analyzing trace with hash 289215473, now seen corresponding path program 1 times [2020-10-15 03:25:41,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:41,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330793110] [2020-10-15 03:25:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:41,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:46,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:46,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 03:25:46,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:25:46,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:25:46,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:46,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:46,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:25:46,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:25:46,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:25:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:25:46,838 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:25:46,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:46,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:46,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:46,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:46,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:46,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:25:46,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:46,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:46,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:46,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:25:46,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:46,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330793110] [2020-10-15 03:25:46,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:46,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:25:46,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380922695] [2020-10-15 03:25:46,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:25:46,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:46,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:25:46,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:25:46,938 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 6 states. [2020-10-15 03:25:47,243 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:25:48,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:48,381 INFO L93 Difference]: Finished difference Result 321 states and 527 transitions. [2020-10-15 03:25:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:25:48,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-15 03:25:48,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:48,405 INFO L225 Difference]: With dead ends: 321 [2020-10-15 03:25:48,405 INFO L226 Difference]: Without dead ends: 212 [2020-10-15 03:25:48,411 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 [2020-10-15 03:25:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-15 03:25:48,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2020-10-15 03:25:48,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-15 03:25:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 298 transitions. [2020-10-15 03:25:48,509 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 298 transitions. Word has length 80 [2020-10-15 03:25:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:48,510 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 298 transitions. [2020-10-15 03:25:48,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:25:48,510 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 298 transitions. [2020-10-15 03:25:48,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 03:25:48,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:48,516 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] [2020-10-15 03:25:48,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:25:48,517 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:48,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1221722817, now seen corresponding path program 1 times [2020-10-15 03:25:48,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:48,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852964703] [2020-10-15 03:25:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:48,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:48,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:48,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:49,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:50,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:50,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:53,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:53,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 03:25:53,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:25:53,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:25:53,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:53,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:25:53,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:25:53,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:25:53,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:53,805 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 03:25:54,054 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:25:54,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:54,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:54,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:54,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:54,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:25:54,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:54,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:54,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852964703] [2020-10-15 03:25:54,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:54,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:25:54,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692442235] [2020-10-15 03:25:54,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:25:54,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:54,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:25:54,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:25:54,109 INFO L87 Difference]: Start difference. First operand 210 states and 298 transitions. Second operand 8 states. [2020-10-15 03:25:54,320 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-15 03:25:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:55,300 INFO L93 Difference]: Finished difference Result 412 states and 615 transitions. [2020-10-15 03:25:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:25:55,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-15 03:25:55,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:55,303 INFO L225 Difference]: With dead ends: 412 [2020-10-15 03:25:55,304 INFO L226 Difference]: Without dead ends: 271 [2020-10-15 03:25:55,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:25:55,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-15 03:25:55,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 210. [2020-10-15 03:25:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-15 03:25:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 297 transitions. [2020-10-15 03:25:55,328 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 297 transitions. Word has length 81 [2020-10-15 03:25:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:55,329 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 297 transitions. [2020-10-15 03:25:55,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:25:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 297 transitions. [2020-10-15 03:25:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:25:55,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:55,331 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] [2020-10-15 03:25:55,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:25:55,331 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:55,332 INFO L82 PathProgramCache]: Analyzing trace with hash -760380807, now seen corresponding path program 1 times [2020-10-15 03:25:55,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:55,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790025832] [2020-10-15 03:25:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:55,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:55,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:55,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:59,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:59,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:00,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:00,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:26:00,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:26:00,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:26:00,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:00,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:00,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:26:00,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:26:00,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:26:00,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:00,531 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:26:00,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:00,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:00,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:00,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:00,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:26:00,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:00,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:00,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:26:00,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:00,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:26:00,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:26:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:00,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790025832] [2020-10-15 03:26:00,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:00,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:26:00,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968210577] [2020-10-15 03:26:00,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:26:00,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:00,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:26:00,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:00,579 INFO L87 Difference]: Start difference. First operand 210 states and 297 transitions. Second operand 6 states. [2020-10-15 03:26:00,744 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:26:01,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:01,296 INFO L93 Difference]: Finished difference Result 366 states and 536 transitions. [2020-10-15 03:26:01,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:26:01,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-15 03:26:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:01,298 INFO L225 Difference]: With dead ends: 366 [2020-10-15 03:26:01,299 INFO L226 Difference]: Without dead ends: 210 [2020-10-15 03:26:01,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:26:01,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-15 03:26:01,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-10-15 03:26:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-15 03:26:01,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 294 transitions. [2020-10-15 03:26:01,329 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 294 transitions. Word has length 82 [2020-10-15 03:26:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:01,330 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 294 transitions. [2020-10-15 03:26:01,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 294 transitions. [2020-10-15 03:26:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:26:01,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:01,332 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] [2020-10-15 03:26:01,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:26:01,332 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:01,333 INFO L82 PathProgramCache]: Analyzing trace with hash -575370022, now seen corresponding path program 1 times [2020-10-15 03:26:01,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:01,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143331796] [2020-10-15 03:26:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:01,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:01,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:01,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:02,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:06,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:06,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:26:06,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:26:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:26:06,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:06,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:26:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:26:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:26:06,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:26:06,580 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:26:06,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:06,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:06,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:06,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:06,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:26:06,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:06,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:06,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143331796] [2020-10-15 03:26:06,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:06,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:26:06,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228580856] [2020-10-15 03:26:06,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:26:06,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:06,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:26:06,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:26:06,625 INFO L87 Difference]: Start difference. First operand 210 states and 294 transitions. Second operand 8 states. [2020-10-15 03:26:06,877 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-15 03:26:08,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:08,750 INFO L93 Difference]: Finished difference Result 1459 states and 2243 transitions. [2020-10-15 03:26:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:26:08,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-15 03:26:08,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:08,760 INFO L225 Difference]: With dead ends: 1459 [2020-10-15 03:26:08,761 INFO L226 Difference]: Without dead ends: 1340 [2020-10-15 03:26:08,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:26:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2020-10-15 03:26:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 349. [2020-10-15 03:26:08,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-15 03:26:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 509 transitions. [2020-10-15 03:26:08,827 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 509 transitions. Word has length 83 [2020-10-15 03:26:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:08,827 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 509 transitions. [2020-10-15 03:26:08,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:26:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 509 transitions. [2020-10-15 03:26:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:26:08,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:08,840 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] [2020-10-15 03:26:08,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:26:08,844 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:08,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1059308091, now seen corresponding path program 1 times [2020-10-15 03:26:08,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:08,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407532840] [2020-10-15 03:26:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:08,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:08,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:09,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:13,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:13,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:26:13,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:26:13,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:26:13,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:13,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:26:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:26:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:26:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:14,064 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:26:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:14,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:14,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:14,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:14,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:26:14,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:14,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:26:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:14,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407532840] [2020-10-15 03:26:14,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:14,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:26:14,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270982091] [2020-10-15 03:26:14,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:26:14,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:14,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:26:14,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:14,107 INFO L87 Difference]: Start difference. First operand 349 states and 509 transitions. Second operand 6 states. [2020-10-15 03:26:14,262 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:26:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:15,963 INFO L93 Difference]: Finished difference Result 2412 states and 3700 transitions. [2020-10-15 03:26:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:26:15,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-15 03:26:15,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:15,976 INFO L225 Difference]: With dead ends: 2412 [2020-10-15 03:26:15,976 INFO L226 Difference]: Without dead ends: 2154 [2020-10-15 03:26:15,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:26:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2020-10-15 03:26:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1191. [2020-10-15 03:26:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-10-15 03:26:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1805 transitions. [2020-10-15 03:26:16,114 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1805 transitions. Word has length 84 [2020-10-15 03:26:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:16,115 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1805 transitions. [2020-10-15 03:26:16,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1805 transitions. [2020-10-15 03:26:16,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:26:16,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:16,118 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] [2020-10-15 03:26:16,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:26:16,118 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:16,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:16,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1697555659, now seen corresponding path program 1 times [2020-10-15 03:26:16,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:16,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069611061] [2020-10-15 03:26:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:16,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:16,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:16,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:16,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:17,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:17,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:17,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:18,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:20,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:20,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:21,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:21,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:26:21,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:26:21,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:26:21,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:21,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:26:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:26:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:26:21,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:21,516 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:26:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:21,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:21,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:21,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:21,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:21,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:26:21,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:21,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:21,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:21,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069611061] [2020-10-15 03:26:21,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:21,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:26:21,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455972389] [2020-10-15 03:26:21,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:26:21,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:21,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:26:21,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:26:21,562 INFO L87 Difference]: Start difference. First operand 1191 states and 1805 transitions. Second operand 9 states. [2020-10-15 03:26:21,751 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-15 03:26:22,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:22,836 INFO L93 Difference]: Finished difference Result 2614 states and 4015 transitions. [2020-10-15 03:26:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:26:22,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-15 03:26:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:22,847 INFO L225 Difference]: With dead ends: 2614 [2020-10-15 03:26:22,847 INFO L226 Difference]: Without dead ends: 1658 [2020-10-15 03:26:22,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:26:22,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2020-10-15 03:26:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1186. [2020-10-15 03:26:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1186 states. [2020-10-15 03:26:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1796 transitions. [2020-10-15 03:26:23,080 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1796 transitions. Word has length 85 [2020-10-15 03:26:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:23,080 INFO L479 AbstractCegarLoop]: Abstraction has 1186 states and 1796 transitions. [2020-10-15 03:26:23,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:26:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1796 transitions. [2020-10-15 03:26:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:26:23,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:23,083 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] [2020-10-15 03:26:23,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:26:23,083 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:23,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1211578742, now seen corresponding path program 1 times [2020-10-15 03:26:23,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:23,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236932340] [2020-10-15 03:26:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:23,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:23,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:24,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:26,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:26,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:27,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:28,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:28,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:28,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:26:28,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-15 03:26:28,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:26:28,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:28,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:28,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:26:28,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:26:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:26:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:26:28,281 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:26:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:28,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:28,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:28,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:26:28,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:28,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:28,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236932340] [2020-10-15 03:26:28,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:28,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:26:28,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387160950] [2020-10-15 03:26:28,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:26:28,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:28,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:26:28,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:28,308 INFO L87 Difference]: Start difference. First operand 1186 states and 1796 transitions. Second operand 6 states. [2020-10-15 03:26:28,473 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:26:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:30,740 INFO L93 Difference]: Finished difference Result 9340 states and 14422 transitions. [2020-10-15 03:26:30,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:26:30,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-15 03:26:30,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:30,780 INFO L225 Difference]: With dead ends: 9340 [2020-10-15 03:26:30,781 INFO L226 Difference]: Without dead ends: 8338 [2020-10-15 03:26:30,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:26:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8338 states. [2020-10-15 03:26:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8338 to 4380. [2020-10-15 03:26:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4380 states. [2020-10-15 03:26:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 6710 transitions. [2020-10-15 03:26:31,305 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 6710 transitions. Word has length 85 [2020-10-15 03:26:31,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:31,306 INFO L479 AbstractCegarLoop]: Abstraction has 4380 states and 6710 transitions. [2020-10-15 03:26:31,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 6710 transitions. [2020-10-15 03:26:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:26:31,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:31,309 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] [2020-10-15 03:26:31,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:26:31,310 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:31,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1157512224, now seen corresponding path program 1 times [2020-10-15 03:26:31,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:31,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40316181] [2020-10-15 03:26:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:31,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:31,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:32,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:32,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:32,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:34,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:34,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:34,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:36,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:36,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:36,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:36,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:26:36,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-15 03:26:36,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:26:36,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:36,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:26:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:26:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:26:36,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:36,549 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:26:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:36,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:36,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:36,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:36,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:26:36,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:36,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:36,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:26:36,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:36,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:26:36,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:36,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40316181] [2020-10-15 03:26:36,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:36,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:26:36,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465362472] [2020-10-15 03:26:36,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:26:36,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:36,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:26:36,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:26:36,600 INFO L87 Difference]: Start difference. First operand 4380 states and 6710 transitions. Second operand 9 states. [2020-10-15 03:26:36,764 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 03:26:40,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:40,745 INFO L93 Difference]: Finished difference Result 34432 states and 52200 transitions. [2020-10-15 03:26:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:26:40,746 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-15 03:26:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:40,849 INFO L225 Difference]: With dead ends: 34432 [2020-10-15 03:26:40,849 INFO L226 Difference]: Without dead ends: 30430 [2020-10-15 03:26:40,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:26:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30430 states. [2020-10-15 03:26:41,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30430 to 4692. [2020-10-15 03:26:41,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2020-10-15 03:26:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 7042 transitions. [2020-10-15 03:26:41,830 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 7042 transitions. Word has length 85 [2020-10-15 03:26:41,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:41,831 INFO L479 AbstractCegarLoop]: Abstraction has 4692 states and 7042 transitions. [2020-10-15 03:26:41,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:26:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 7042 transitions. [2020-10-15 03:26:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:26:41,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:41,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:26:41,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:26:41,835 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:41,835 INFO L82 PathProgramCache]: Analyzing trace with hash -827095402, now seen corresponding path program 1 times [2020-10-15 03:26:41,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:41,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497899474] [2020-10-15 03:26:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:42,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:42,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:42,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:43,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:43,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:46,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:46,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:26:46,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:26:46,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:26:46,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:46,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:26:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:26:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:26:46,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:47,091 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:26:47,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:47,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:47,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:47,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:47,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:26:47,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:47,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:47,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:47,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497899474] [2020-10-15 03:26:47,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:47,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:26:47,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261540100] [2020-10-15 03:26:47,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:26:47,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:47,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:26:47,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:26:47,128 INFO L87 Difference]: Start difference. First operand 4692 states and 7042 transitions. Second operand 8 states. [2020-10-15 03:26:47,371 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:26:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:50,442 INFO L93 Difference]: Finished difference Result 23460 states and 35792 transitions. [2020-10-15 03:26:50,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:26:50,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-15 03:26:50,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:50,489 INFO L225 Difference]: With dead ends: 23460 [2020-10-15 03:26:50,489 INFO L226 Difference]: Without dead ends: 19746 [2020-10-15 03:26:50,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:26:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19746 states. [2020-10-15 03:26:51,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19746 to 4692. [2020-10-15 03:26:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2020-10-15 03:26:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 7010 transitions. [2020-10-15 03:26:51,197 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 7010 transitions. Word has length 85 [2020-10-15 03:26:51,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:51,198 INFO L479 AbstractCegarLoop]: Abstraction has 4692 states and 7010 transitions. [2020-10-15 03:26:51,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:26:51,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 7010 transitions. [2020-10-15 03:26:51,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:26:51,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:51,202 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] [2020-10-15 03:26:51,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:26:51,203 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:51,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:51,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1032087273, now seen corresponding path program 1 times [2020-10-15 03:26:51,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:51,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124534074] [2020-10-15 03:26:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:51,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:51,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:51,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:51,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:55,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:56,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:56,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:26:56,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:26:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:26:56,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:56,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:26:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:26:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:26:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:56,410 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:26:56,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:56,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:56,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:56,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:56,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:26:56,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:56,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:56,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:56,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124534074] [2020-10-15 03:26:56,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:56,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:26:56,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687342974] [2020-10-15 03:26:56,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:26:56,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:56,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:26:56,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:26:56,441 INFO L87 Difference]: Start difference. First operand 4692 states and 7010 transitions. Second operand 5 states. [2020-10-15 03:26:56,613 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-15 03:26:58,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:58,327 INFO L93 Difference]: Finished difference Result 11768 states and 17732 transitions. [2020-10-15 03:26:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:26:58,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-15 03:26:58,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:58,350 INFO L225 Difference]: With dead ends: 11768 [2020-10-15 03:26:58,351 INFO L226 Difference]: Without dead ends: 8054 [2020-10-15 03:26:58,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8054 states. [2020-10-15 03:26:59,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8054 to 8052. [2020-10-15 03:26:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8052 states. [2020-10-15 03:26:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8052 states to 8052 states and 11970 transitions. [2020-10-15 03:26:59,403 INFO L78 Accepts]: Start accepts. Automaton has 8052 states and 11970 transitions. Word has length 85 [2020-10-15 03:26:59,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:59,403 INFO L479 AbstractCegarLoop]: Abstraction has 8052 states and 11970 transitions. [2020-10-15 03:26:59,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:26:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 8052 states and 11970 transitions. [2020-10-15 03:26:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:26:59,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:59,407 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] [2020-10-15 03:26:59,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:26:59,408 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:59,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1302022871, now seen corresponding path program 1 times [2020-10-15 03:26:59,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:59,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377306751] [2020-10-15 03:26:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:59,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:59,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:59,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:59,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:59,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:04,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:04,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:27:04,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:27:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:27:04,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:04,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:27:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:27:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:27:04,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:04,613 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:27:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:04,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:04,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:04,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:27:04,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:04,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:27:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:27:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:27:04,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377306751] [2020-10-15 03:27:04,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:27:04,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:27:04,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229543854] [2020-10-15 03:27:04,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:27:04,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:04,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:27:04,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:27:04,655 INFO L87 Difference]: Start difference. First operand 8052 states and 11970 transitions. Second operand 8 states. [2020-10-15 03:27:04,854 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:27:11,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:11,366 INFO L93 Difference]: Finished difference Result 51970 states and 78095 transitions. [2020-10-15 03:27:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:27:11,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-15 03:27:11,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:11,450 INFO L225 Difference]: With dead ends: 51970 [2020-10-15 03:27:11,450 INFO L226 Difference]: Without dead ends: 44896 [2020-10-15 03:27:11,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:27:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44896 states. [2020-10-15 03:27:14,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44896 to 18468. [2020-10-15 03:27:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18468 states. [2020-10-15 03:27:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18468 states to 18468 states and 27506 transitions. [2020-10-15 03:27:14,281 INFO L78 Accepts]: Start accepts. Automaton has 18468 states and 27506 transitions. Word has length 85 [2020-10-15 03:27:14,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:27:14,281 INFO L479 AbstractCegarLoop]: Abstraction has 18468 states and 27506 transitions. [2020-10-15 03:27:14,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:27:14,282 INFO L276 IsEmpty]: Start isEmpty. Operand 18468 states and 27506 transitions. [2020-10-15 03:27:14,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:27:14,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:14,284 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] [2020-10-15 03:27:14,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:27:14,284 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:14,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1085411521, now seen corresponding path program 1 times [2020-10-15 03:27:14,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:14,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044324512] [2020-10-15 03:27:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:14,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:14,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:14,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:14,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:15,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:15,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:16,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:16,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:17,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:17,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:18,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:19,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:19,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:27:19,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-15 03:27:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:27:19,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:19,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:27:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:27:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:27:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:19,607 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:27:19,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:19,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:19,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:19,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:19,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:19,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:27:19,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:19,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:27:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:27:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:27:19,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044324512] [2020-10-15 03:27:19,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:27:19,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:27:19,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237228103] [2020-10-15 03:27:19,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:27:19,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:19,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:27:19,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:27:19,636 INFO L87 Difference]: Start difference. First operand 18468 states and 27506 transitions. Second operand 9 states. [2020-10-15 03:27:20,002 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 146 [2020-10-15 03:27:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:44,430 INFO L93 Difference]: Finished difference Result 175724 states and 259338 transitions. [2020-10-15 03:27:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 03:27:44,430 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-15 03:27:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:44,640 INFO L225 Difference]: With dead ends: 175724 [2020-10-15 03:27:44,640 INFO L226 Difference]: Without dead ends: 157970 [2020-10-15 03:27:44,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=279, Invalid=981, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 03:27:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157970 states. [2020-10-15 03:27:49,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157970 to 18212. [2020-10-15 03:27:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18212 states. [2020-10-15 03:27:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18212 states to 18212 states and 26938 transitions. [2020-10-15 03:27:49,922 INFO L78 Accepts]: Start accepts. Automaton has 18212 states and 26938 transitions. Word has length 85 [2020-10-15 03:27:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:27:49,922 INFO L479 AbstractCegarLoop]: Abstraction has 18212 states and 26938 transitions. [2020-10-15 03:27:49,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:27:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 18212 states and 26938 transitions. [2020-10-15 03:27:49,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:27:49,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:49,925 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] [2020-10-15 03:27:49,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:27:49,926 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:49,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:49,926 INFO L82 PathProgramCache]: Analyzing trace with hash 127937036, now seen corresponding path program 1 times [2020-10-15 03:27:49,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:49,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623488964] [2020-10-15 03:27:49,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:49,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:51,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:51,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:54,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:54,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:27:54,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:27:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:27:54,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:54,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:27:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:27:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:27:54,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:55,272 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:27:55,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:55,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:55,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:55,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:55,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:55,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:27:55,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:55,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:27:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:27:55,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:27:55,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623488964] [2020-10-15 03:27:55,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:27:55,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:27:55,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428686351] [2020-10-15 03:27:55,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:27:55,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:55,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:27:55,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:27:55,299 INFO L87 Difference]: Start difference. First operand 18212 states and 26938 transitions. Second operand 9 states. [2020-10-15 03:27:55,504 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:28:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:03,579 INFO L93 Difference]: Finished difference Result 53696 states and 79356 transitions. [2020-10-15 03:28:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:28:03,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-15 03:28:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:03,619 INFO L225 Difference]: With dead ends: 53696 [2020-10-15 03:28:03,619 INFO L226 Difference]: Without dead ends: 36350 [2020-10-15 03:28:03,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:28:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36350 states. [2020-10-15 03:28:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36350 to 18212. [2020-10-15 03:28:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18212 states. [2020-10-15 03:28:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18212 states to 18212 states and 26906 transitions. [2020-10-15 03:28:07,848 INFO L78 Accepts]: Start accepts. Automaton has 18212 states and 26906 transitions. Word has length 86 [2020-10-15 03:28:07,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:07,849 INFO L479 AbstractCegarLoop]: Abstraction has 18212 states and 26906 transitions. [2020-10-15 03:28:07,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:28:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 18212 states and 26906 transitions. [2020-10-15 03:28:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:28:07,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:07,852 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] [2020-10-15 03:28:07,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:28:07,853 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:07,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:07,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1270537178, now seen corresponding path program 1 times [2020-10-15 03:28:07,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:07,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798232209] [2020-10-15 03:28:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:07,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:07,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:08,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:08,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:09,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:12,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:12,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:28:12,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:28:12,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:28:12,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:12,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:28:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:28:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:28:12,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:13,050 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:28:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:13,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:13,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:13,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:28:13,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:13,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:28:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:28:13,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:13,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798232209] [2020-10-15 03:28:13,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:13,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:28:13,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584419026] [2020-10-15 03:28:13,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:28:13,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:13,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:28:13,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:28:13,081 INFO L87 Difference]: Start difference. First operand 18212 states and 26906 transitions. Second operand 6 states. [2020-10-15 03:28:13,258 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:28:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:16,209 INFO L93 Difference]: Finished difference Result 26832 states and 39780 transitions. [2020-10-15 03:28:16,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:28:16,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-15 03:28:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:16,225 INFO L225 Difference]: With dead ends: 26832 [2020-10-15 03:28:16,225 INFO L226 Difference]: Without dead ends: 13470 [2020-10-15 03:28:16,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:28:16,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13470 states. [2020-10-15 03:28:18,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13470 to 9160. [2020-10-15 03:28:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9160 states. [2020-10-15 03:28:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9160 states to 9160 states and 13518 transitions. [2020-10-15 03:28:18,063 INFO L78 Accepts]: Start accepts. Automaton has 9160 states and 13518 transitions. Word has length 87 [2020-10-15 03:28:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:18,063 INFO L479 AbstractCegarLoop]: Abstraction has 9160 states and 13518 transitions. [2020-10-15 03:28:18,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:28:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 9160 states and 13518 transitions. [2020-10-15 03:28:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:28:18,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:18,065 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] [2020-10-15 03:28:18,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:28:18,065 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:18,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:18,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1738019153, now seen corresponding path program 1 times [2020-10-15 03:28:18,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:18,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390525152] [2020-10-15 03:28:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:18,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:18,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:19,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:20,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:20,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:20,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:21,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:22,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:23,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:23,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:28:23,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-15 03:28:23,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:28:23,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:23,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:28:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:28:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 03:28:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:23,356 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:28:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:23,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:23,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:23,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:28:23,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:23,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:23,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390525152] [2020-10-15 03:28:23,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:23,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:28:23,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929275648] [2020-10-15 03:28:23,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:28:23,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:23,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:28:23,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:28:23,382 INFO L87 Difference]: Start difference. First operand 9160 states and 13518 transitions. Second operand 9 states. [2020-10-15 03:28:23,579 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:28:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:27,634 INFO L93 Difference]: Finished difference Result 22304 states and 32952 transitions. [2020-10-15 03:28:27,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:28:27,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:28:27,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:27,659 INFO L225 Difference]: With dead ends: 22304 [2020-10-15 03:28:27,659 INFO L226 Difference]: Without dead ends: 13470 [2020-10-15 03:28:27,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:28:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13470 states. [2020-10-15 03:28:29,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13470 to 9160. [2020-10-15 03:28:29,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9160 states. [2020-10-15 03:28:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9160 states to 9160 states and 13494 transitions. [2020-10-15 03:28:29,586 INFO L78 Accepts]: Start accepts. Automaton has 9160 states and 13494 transitions. Word has length 87 [2020-10-15 03:28:29,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:29,586 INFO L479 AbstractCegarLoop]: Abstraction has 9160 states and 13494 transitions. [2020-10-15 03:28:29,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:28:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 9160 states and 13494 transitions. [2020-10-15 03:28:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:28:29,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:29,589 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] [2020-10-15 03:28:29,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:28:29,589 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:29,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:29,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1354235708, now seen corresponding path program 1 times [2020-10-15 03:28:29,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:29,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660769107] [2020-10-15 03:28:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:29,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:30,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:31,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:34,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:34,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:34,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:28:34,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:28:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:28:34,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:34,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:28:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:28:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:28:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:34,775 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:28:34,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:34,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:34,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:34,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:34,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:34,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:28:34,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:34,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:34,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:34,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660769107] [2020-10-15 03:28:34,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:34,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:28:34,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793892569] [2020-10-15 03:28:34,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:28:34,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:34,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:28:34,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:28:34,800 INFO L87 Difference]: Start difference. First operand 9160 states and 13494 transitions. Second operand 6 states. [2020-10-15 03:28:34,982 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-15 03:28:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:38,535 INFO L93 Difference]: Finished difference Result 17914 states and 26465 transitions. [2020-10-15 03:28:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:28:38,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-15 03:28:38,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:38,547 INFO L225 Difference]: With dead ends: 17914 [2020-10-15 03:28:38,548 INFO L226 Difference]: Without dead ends: 12784 [2020-10-15 03:28:38,553 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 [2020-10-15 03:28:38,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12784 states. [2020-10-15 03:28:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12784 to 11900. [2020-10-15 03:28:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11900 states. [2020-10-15 03:28:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11900 states to 11900 states and 17606 transitions. [2020-10-15 03:28:41,047 INFO L78 Accepts]: Start accepts. Automaton has 11900 states and 17606 transitions. Word has length 87 [2020-10-15 03:28:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:41,047 INFO L479 AbstractCegarLoop]: Abstraction has 11900 states and 17606 transitions. [2020-10-15 03:28:41,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:28:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 11900 states and 17606 transitions. [2020-10-15 03:28:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:28:41,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:41,050 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] [2020-10-15 03:28:41,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:28:41,050 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:41,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:41,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2023952937, now seen corresponding path program 1 times [2020-10-15 03:28:41,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:41,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458023275] [2020-10-15 03:28:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:41,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:41,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:41,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:43,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:44,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:45,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:45,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:46,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:46,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:28:46,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-15 03:28:46,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:28:46,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:46,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:28:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:28:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:28:46,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:28:46,366 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:28:46,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:46,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:46,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:46,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:46,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:28:46,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:46,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:46,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:46,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458023275] [2020-10-15 03:28:46,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:46,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:28:46,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278787211] [2020-10-15 03:28:46,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:28:46,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:46,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:28:46,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:28:46,391 INFO L87 Difference]: Start difference. First operand 11900 states and 17606 transitions. Second operand 9 states. [2020-10-15 03:28:46,567 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:29:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:07,795 INFO L93 Difference]: Finished difference Result 91708 states and 135734 transitions. [2020-10-15 03:29:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 03:29:07,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-15 03:29:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:07,893 INFO L225 Difference]: With dead ends: 91708 [2020-10-15 03:29:07,893 INFO L226 Difference]: Without dead ends: 80202 [2020-10-15 03:29:07,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-10-15 03:29:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80202 states. [2020-10-15 03:29:11,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80202 to 11656. [2020-10-15 03:29:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11656 states. [2020-10-15 03:29:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 17148 transitions. [2020-10-15 03:29:11,195 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 17148 transitions. Word has length 88 [2020-10-15 03:29:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:11,195 INFO L479 AbstractCegarLoop]: Abstraction has 11656 states and 17148 transitions. [2020-10-15 03:29:11,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:29:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 17148 transitions. [2020-10-15 03:29:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:29:11,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:11,197 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] [2020-10-15 03:29:11,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:29:11,198 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:11,198 INFO L82 PathProgramCache]: Analyzing trace with hash 970905197, now seen corresponding path program 1 times [2020-10-15 03:29:11,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:11,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196388780] [2020-10-15 03:29:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:11,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:11,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:11,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:11,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:11,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:12,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:15,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:16,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:16,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:29:16,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:29:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:29:16,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:16,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:29:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:29:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 03:29:16,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:16,576 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:29:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:16,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:16,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:16,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:29:16,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:16,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:16,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:16,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196388780] [2020-10-15 03:29:16,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:16,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:29:16,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489115122] [2020-10-15 03:29:16,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:29:16,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:16,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:29:16,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:29:16,607 INFO L87 Difference]: Start difference. First operand 11656 states and 17148 transitions. Second operand 10 states. [2020-10-15 03:29:16,790 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-15 03:29:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:23,656 INFO L93 Difference]: Finished difference Result 34092 states and 50338 transitions. [2020-10-15 03:29:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:29:23,657 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-15 03:29:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:23,680 INFO L225 Difference]: With dead ends: 34092 [2020-10-15 03:29:23,680 INFO L226 Difference]: Without dead ends: 22914 [2020-10-15 03:29:23,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:29:23,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22914 states. [2020-10-15 03:29:26,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22914 to 11650. [2020-10-15 03:29:26,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11650 states. [2020-10-15 03:29:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11650 states to 11650 states and 17124 transitions. [2020-10-15 03:29:26,857 INFO L78 Accepts]: Start accepts. Automaton has 11650 states and 17124 transitions. Word has length 88 [2020-10-15 03:29:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:26,857 INFO L479 AbstractCegarLoop]: Abstraction has 11650 states and 17124 transitions. [2020-10-15 03:29:26,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:29:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 11650 states and 17124 transitions. [2020-10-15 03:29:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 03:29:26,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:26,859 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] [2020-10-15 03:29:26,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:29:26,860 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:26,860 INFO L82 PathProgramCache]: Analyzing trace with hash 39464121, now seen corresponding path program 1 times [2020-10-15 03:29:26,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:26,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806951947] [2020-10-15 03:29:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:31,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:31,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 03:29:31,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:29:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:29:31,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:31,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:29:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:29:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:29:31,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:32,050 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:29:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:32,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:32,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:32,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:32,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:29:32,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:32,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:32,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:32,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:32,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:32,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806951947] [2020-10-15 03:29:32,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:32,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:29:32,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430841053] [2020-10-15 03:29:32,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:29:32,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:32,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:29:32,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:29:32,073 INFO L87 Difference]: Start difference. First operand 11650 states and 17124 transitions. Second operand 6 states. [2020-10-15 03:29:32,249 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-15 03:29:37,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:37,246 INFO L93 Difference]: Finished difference Result 23066 states and 33949 transitions. [2020-10-15 03:29:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:29:37,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-15 03:29:37,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:37,263 INFO L225 Difference]: With dead ends: 23066 [2020-10-15 03:29:37,264 INFO L226 Difference]: Without dead ends: 16264 [2020-10-15 03:29:37,273 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 [2020-10-15 03:29:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16264 states.