/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:34:32,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:34:32,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:34:32,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:34:32,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:34:32,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:34:32,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:34:32,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:34:32,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:34:32,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:34:32,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:34:32,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:34:32,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:34:32,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:34:32,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:34:32,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:34:32,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:34:32,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:34:32,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:34:32,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:34:32,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:34:32,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:34:32,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:34:32,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:34:32,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:34:32,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:34:32,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:34:32,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:34:32,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:34:32,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:34:32,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:34:32,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:34:32,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:34:32,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:34:32,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:34:32,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:34:32,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:34:32,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:34:32,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:34:32,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:34:32,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:34:32,260 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 [2020-10-28 18:34:32,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:34:32,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:34:32,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:34:32,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:34:32,314 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:34:32,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:34:32,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:34:32,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:34:32,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:34:32,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:34:32,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:34:32,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:34:32,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:34:32,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:34:32,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:34:32,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:34:32,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:34:32,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:34:32,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:34:32,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:34:32,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:34:32,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:34:32,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:34:32,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:34:32,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:34:32,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:34:32,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:34:32,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:34:32,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:34:32,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:34:32,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:34:32,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:34:32,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:34:32,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:34:32,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:34:32,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-28 18:34:32,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00d5adbd1/2efd0ac9064d4e40803db185761d1b6c/FLAG5868823a6 [2020-10-28 18:34:33,711 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:34:33,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-28 18:34:33,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00d5adbd1/2efd0ac9064d4e40803db185761d1b6c/FLAG5868823a6 [2020-10-28 18:34:33,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00d5adbd1/2efd0ac9064d4e40803db185761d1b6c [2020-10-28 18:34:33,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:34:33,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:34:33,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:34:33,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:34:33,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:34:33,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:34:33" (1/1) ... [2020-10-28 18:34:33,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0e1fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:33, skipping insertion in model container [2020-10-28 18:34:33,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:34:33" (1/1) ... [2020-10-28 18:34:33,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:34:33,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:34:34,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:34:34,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:34:35,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:34:35,143 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:34:35,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:35 WrapperNode [2020-10-28 18:34:35,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:34:35,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:34:35,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:34:35,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:34:35,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:35" (1/1) ... [2020-10-28 18:34:35,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:35" (1/1) ... [2020-10-28 18:34:35,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:35" (1/1) ... [2020-10-28 18:34:35,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:35" (1/1) ... [2020-10-28 18:34:35,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:35" (1/1) ... [2020-10-28 18:34:35,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:35" (1/1) ... [2020-10-28 18:34:35,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:35" (1/1) ... [2020-10-28 18:34:35,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:34:35,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:34:35,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:34:35,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:34:35,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:35" (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 [2020-10-28 18:34:35,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:34:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:34:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:34:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:34:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:34:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:34:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:34:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:34:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:34:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:34:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:34:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:34:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:34:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:34:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:34:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:34:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:34:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:34:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:34:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:34:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:34:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:34:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:34:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:34:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:34:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:34:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:34:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:34:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:34:37,773 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:34:37,773 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:34:37,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:34:37 BoogieIcfgContainer [2020-10-28 18:34:37,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:34:37,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:34:37,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:34:37,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:34:37,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:34:33" (1/3) ... [2020-10-28 18:34:37,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a810994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:34:37, skipping insertion in model container [2020-10-28 18:34:37,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:34:35" (2/3) ... [2020-10-28 18:34:37,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a810994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:34:37, skipping insertion in model container [2020-10-28 18:34:37,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:34:37" (3/3) ... [2020-10-28 18:34:37,785 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-28 18:34:37,797 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:34:37,802 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:34:37,816 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:34:37,847 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:34:37,847 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:34:37,848 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:34:37,848 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:34:37,848 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:34:37,848 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:34:37,848 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:34:37,848 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:34:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states. [2020-10-28 18:34:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 18:34:37,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:34:37,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:34:37,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:34:37,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:34:37,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1615027478, now seen corresponding path program 1 times [2020-10-28 18:34:37,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:34:37,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963472715] [2020-10-28 18:34:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:34:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:39,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:43,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:43,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 18:34:43,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:34:43,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 18:34:43,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:43,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:34:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:34:43,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 18:34:43,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:34:44,467 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:34:44,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:34:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:44,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:44,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:34:44,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:34:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:34:44,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:44,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:34:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:34:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:34:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:34:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:34:44,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963472715] [2020-10-28 18:34:44,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:34:44,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:34:44,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020796599] [2020-10-28 18:34:44,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:34:44,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:34:44,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:34:44,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:34:44,585 INFO L87 Difference]: Start difference. First operand 638 states. Second operand 7 states. [2020-10-28 18:34:46,629 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 366 DAG size of output: 362 [2020-10-28 18:34:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:34:53,276 INFO L93 Difference]: Finished difference Result 1625 states and 2765 transitions. [2020-10-28 18:34:53,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 18:34:53,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-28 18:34:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:34:53,305 INFO L225 Difference]: With dead ends: 1625 [2020-10-28 18:34:53,306 INFO L226 Difference]: Without dead ends: 1261 [2020-10-28 18:34:53,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-28 18:34:53,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2020-10-28 18:34:53,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 620. [2020-10-28 18:34:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-28 18:34:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 785 transitions. [2020-10-28 18:34:53,449 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 785 transitions. Word has length 77 [2020-10-28 18:34:53,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:34:53,449 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 785 transitions. [2020-10-28 18:34:53,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:34:53,450 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 785 transitions. [2020-10-28 18:34:53,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 18:34:53,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:34:53,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:34:53,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:34:53,456 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:34:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:34:53,457 INFO L82 PathProgramCache]: Analyzing trace with hash 38189278, now seen corresponding path program 1 times [2020-10-28 18:34:53,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:34:53,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741861420] [2020-10-28 18:34:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:34:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:53,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:53,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:55,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:55,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:58,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:58,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 18:34:58,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:34:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:34:58,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:58,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:34:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:34:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 18:34:58,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:34:59,444 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:34:59,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:34:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:34:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:34:59,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:34:59,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:34:59,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:34:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 18:34:59,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:34:59,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:34:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:34:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:34:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:34:59,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:34:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:34:59,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741861420] [2020-10-28 18:34:59,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:34:59,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:34:59,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292876288] [2020-10-28 18:34:59,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:34:59,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:34:59,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:34:59,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:34:59,566 INFO L87 Difference]: Start difference. First operand 620 states and 785 transitions. Second operand 6 states. [2020-10-28 18:35:00,526 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 18:35:03,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:03,404 INFO L93 Difference]: Finished difference Result 948 states and 1247 transitions. [2020-10-28 18:35:03,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:35:03,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-28 18:35:03,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:03,410 INFO L225 Difference]: With dead ends: 948 [2020-10-28 18:35:03,411 INFO L226 Difference]: Without dead ends: 504 [2020-10-28 18:35:03,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:35:03,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-28 18:35:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-10-28 18:35:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-28 18:35:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 652 transitions. [2020-10-28 18:35:03,451 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 652 transitions. Word has length 77 [2020-10-28 18:35:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:03,452 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 652 transitions. [2020-10-28 18:35:03,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:35:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 652 transitions. [2020-10-28 18:35:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 18:35:03,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:03,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:35:03,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:35:03,456 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:03,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:03,456 INFO L82 PathProgramCache]: Analyzing trace with hash -2055092833, now seen corresponding path program 1 times [2020-10-28 18:35:03,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:03,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283807752] [2020-10-28 18:35:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:03,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:03,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:03,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:05,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:05,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:06,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:07,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:08,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:08,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:08,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 18:35:08,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:35:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:35:08,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:08,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:08,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:35:08,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:35:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 18:35:08,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:09,540 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:35:09,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:09,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:09,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:09,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:09,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 18:35:09,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:09,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:35:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:35:09,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:35:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:09,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283807752] [2020-10-28 18:35:09,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:09,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:35:09,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761093669] [2020-10-28 18:35:09,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:35:09,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:09,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:35:09,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:35:09,617 INFO L87 Difference]: Start difference. First operand 504 states and 652 transitions. Second operand 8 states. [2020-10-28 18:35:11,513 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 366 DAG size of output: 362 [2020-10-28 18:35:16,160 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 367 DAG size of output: 360 [2020-10-28 18:35:17,488 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-28 18:35:20,292 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 366 DAG size of output: 359 [2020-10-28 18:35:21,201 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-28 18:35:21,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:21,422 INFO L93 Difference]: Finished difference Result 1769 states and 2501 transitions. [2020-10-28 18:35:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 18:35:21,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-28 18:35:21,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:21,431 INFO L225 Difference]: With dead ends: 1769 [2020-10-28 18:35:21,431 INFO L226 Difference]: Without dead ends: 1568 [2020-10-28 18:35:21,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2020-10-28 18:35:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-28 18:35:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 518. [2020-10-28 18:35:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-28 18:35:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 668 transitions. [2020-10-28 18:35:21,479 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 668 transitions. Word has length 78 [2020-10-28 18:35:21,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:21,479 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 668 transitions. [2020-10-28 18:35:21,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:35:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 668 transitions. [2020-10-28 18:35:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 18:35:21,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:21,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:35:21,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:35:21,482 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:21,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:21,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1185616310, now seen corresponding path program 1 times [2020-10-28 18:35:21,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:21,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145794971] [2020-10-28 18:35:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:21,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:21,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:23,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:24,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:26,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:26,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 18:35:26,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:35:26,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:35:26,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:26,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:35:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:35:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 18:35:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:27,640 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:35:27,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:27,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:27,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:27,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:35:27,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:27,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:35:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:35:27,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:27,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145794971] [2020-10-28 18:35:27,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:27,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:35:27,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110788510] [2020-10-28 18:35:27,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:35:27,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:27,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:35:27,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:35:27,730 INFO L87 Difference]: Start difference. First operand 518 states and 668 transitions. Second operand 7 states. [2020-10-28 18:35:29,641 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 364 DAG size of output: 364 [2020-10-28 18:35:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:33,717 INFO L93 Difference]: Finished difference Result 1199 states and 1625 transitions. [2020-10-28 18:35:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 18:35:33,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-28 18:35:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:33,724 INFO L225 Difference]: With dead ends: 1199 [2020-10-28 18:35:33,724 INFO L226 Difference]: Without dead ends: 1063 [2020-10-28 18:35:33,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-28 18:35:33,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-10-28 18:35:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 538. [2020-10-28 18:35:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-28 18:35:33,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 691 transitions. [2020-10-28 18:35:33,774 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 691 transitions. Word has length 78 [2020-10-28 18:35:33,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:33,775 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 691 transitions. [2020-10-28 18:35:33,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:35:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 691 transitions. [2020-10-28 18:35:33,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 18:35:33,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:33,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:35:33,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:35:33,777 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:33,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:33,778 INFO L82 PathProgramCache]: Analyzing trace with hash -293509269, now seen corresponding path program 1 times [2020-10-28 18:35:33,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:33,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738871235] [2020-10-28 18:35:33,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:34,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:38,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:38,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 18:35:38,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:35:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:35:38,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:38,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:35:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:35:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 18:35:38,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:39,856 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:35:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:39,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:39,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:39,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 18:35:39,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:39,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:35:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:35:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:39,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738871235] [2020-10-28 18:35:39,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:39,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:35:39,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588255417] [2020-10-28 18:35:39,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:35:39,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:39,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:35:39,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:35:39,958 INFO L87 Difference]: Start difference. First operand 538 states and 691 transitions. Second operand 6 states. [2020-10-28 18:35:40,930 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2020-10-28 18:35:44,009 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 18:35:44,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:35:44,469 INFO L93 Difference]: Finished difference Result 1072 states and 1440 transitions. [2020-10-28 18:35:44,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:35:44,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-28 18:35:44,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:35:44,474 INFO L225 Difference]: With dead ends: 1072 [2020-10-28 18:35:44,474 INFO L226 Difference]: Without dead ends: 654 [2020-10-28 18:35:44,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:35:44,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-10-28 18:35:44,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 619. [2020-10-28 18:35:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-10-28 18:35:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 841 transitions. [2020-10-28 18:35:44,532 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 841 transitions. Word has length 78 [2020-10-28 18:35:44,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:35:44,532 INFO L481 AbstractCegarLoop]: Abstraction has 619 states and 841 transitions. [2020-10-28 18:35:44,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:35:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 841 transitions. [2020-10-28 18:35:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 18:35:44,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:35:44,534 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] [2020-10-28 18:35:44,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:35:44,534 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:35:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:35:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1948679961, now seen corresponding path program 1 times [2020-10-28 18:35:44,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:35:44,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228469524] [2020-10-28 18:35:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:35:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:44,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:45,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:45,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:46,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:49,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:49,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 18:35:49,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:35:49,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:35:49,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:49,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:35:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:35:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 18:35:49,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:50,703 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:35:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:35:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:35:50,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:35:50,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:35:50,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:35:50,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:35:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:35:50,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:35:50,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:35:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:35:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:35:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:35:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:35:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:35:50,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228469524] [2020-10-28 18:35:50,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:35:50,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:35:50,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230421459] [2020-10-28 18:35:50,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:35:50,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:35:50,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:35:50,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:35:50,781 INFO L87 Difference]: Start difference. First operand 619 states and 841 transitions. Second operand 8 states. [2020-10-28 18:35:52,894 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 383 DAG size of output: 381 [2020-10-28 18:35:57,799 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 378 DAG size of output: 376 [2020-10-28 18:36:00,278 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-28 18:36:00,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:36:00,391 INFO L93 Difference]: Finished difference Result 1730 states and 2435 transitions. [2020-10-28 18:36:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 18:36:00,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-10-28 18:36:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:36:00,399 INFO L225 Difference]: With dead ends: 1730 [2020-10-28 18:36:00,399 INFO L226 Difference]: Without dead ends: 1580 [2020-10-28 18:36:00,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2020-10-28 18:36:00,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-28 18:36:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 643. [2020-10-28 18:36:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-28 18:36:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 874 transitions. [2020-10-28 18:36:00,480 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 874 transitions. Word has length 79 [2020-10-28 18:36:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:36:00,480 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 874 transitions. [2020-10-28 18:36:00,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:36:00,480 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 874 transitions. [2020-10-28 18:36:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 18:36:00,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:36:00,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:36:00,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:36:00,482 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:36:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:36:00,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1622990650, now seen corresponding path program 1 times [2020-10-28 18:36:00,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:36:00,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745075792] [2020-10-28 18:36:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:36:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:00,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:01,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:04,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:04,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:04,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:05,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:05,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:05,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 18:36:05,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:36:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:36:05,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:05,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:36:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:36:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 18:36:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:06,465 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:36:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:36:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:06,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:06,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:36:06,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:36:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:36:06,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:06,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:36:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:36:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:36:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:36:06,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745075792] [2020-10-28 18:36:06,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:36:06,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:36:06,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691647629] [2020-10-28 18:36:06,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:36:06,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:36:06,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:36:06,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:36:06,540 INFO L87 Difference]: Start difference. First operand 643 states and 874 transitions. Second operand 6 states. [2020-10-28 18:36:08,390 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 361 DAG size of output: 360 [2020-10-28 18:36:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:36:10,701 INFO L93 Difference]: Finished difference Result 940 states and 1297 transitions. [2020-10-28 18:36:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:36:10,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-28 18:36:10,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:36:10,706 INFO L225 Difference]: With dead ends: 940 [2020-10-28 18:36:10,706 INFO L226 Difference]: Without dead ends: 591 [2020-10-28 18:36:10,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:36:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-28 18:36:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2020-10-28 18:36:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-28 18:36:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 807 transitions. [2020-10-28 18:36:10,777 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 807 transitions. Word has length 79 [2020-10-28 18:36:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:36:10,777 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 807 transitions. [2020-10-28 18:36:10,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:36:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 807 transitions. [2020-10-28 18:36:10,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 18:36:10,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:36:10,779 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] [2020-10-28 18:36:10,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:36:10,780 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:36:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:36:10,780 INFO L82 PathProgramCache]: Analyzing trace with hash -49132005, now seen corresponding path program 1 times [2020-10-28 18:36:10,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:36:10,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965816515] [2020-10-28 18:36:10,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:36:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:10,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:10,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:10,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:11,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:11,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:12,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:15,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:15,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 18:36:15,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:36:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:36:15,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:15,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:36:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:36:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 18:36:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:16,786 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:36:16,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:36:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:16,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:16,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:36:16,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:36:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:36:16,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:16,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:36:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:36:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:36:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:36:16,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965816515] [2020-10-28 18:36:16,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:36:16,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:36:16,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137679586] [2020-10-28 18:36:16,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:36:16,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:36:16,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:36:16,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:36:16,838 INFO L87 Difference]: Start difference. First operand 591 states and 807 transitions. Second operand 8 states. [2020-10-28 18:36:18,739 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 366 DAG size of output: 362 [2020-10-28 18:36:22,978 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 368 DAG size of output: 360 [2020-10-28 18:36:24,123 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-28 18:36:26,844 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 367 DAG size of output: 359 [2020-10-28 18:36:27,746 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-28 18:36:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:36:28,129 INFO L93 Difference]: Finished difference Result 2632 states and 3812 transitions. [2020-10-28 18:36:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 18:36:28,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-28 18:36:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:36:28,139 INFO L225 Difference]: With dead ends: 2632 [2020-10-28 18:36:28,139 INFO L226 Difference]: Without dead ends: 2342 [2020-10-28 18:36:28,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2020-10-28 18:36:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2020-10-28 18:36:28,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 593. [2020-10-28 18:36:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-28 18:36:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 809 transitions. [2020-10-28 18:36:28,233 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 809 transitions. Word has length 80 [2020-10-28 18:36:28,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:36:28,233 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 809 transitions. [2020-10-28 18:36:28,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:36:28,233 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 809 transitions. [2020-10-28 18:36:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 18:36:28,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:36:28,235 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] [2020-10-28 18:36:28,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:36:28,236 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:36:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:36:28,236 INFO L82 PathProgramCache]: Analyzing trace with hash 169742408, now seen corresponding path program 1 times [2020-10-28 18:36:28,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:36:28,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146940542] [2020-10-28 18:36:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:36:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:29,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:30,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:31,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:33,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:33,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:33,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 18:36:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:36:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:36:33,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:33,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:36:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:36:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 18:36:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:34,262 WARN L193 SmtUtils]: Spent 865.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:36:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:36:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:34,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:34,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:36:34,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:36:34,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:36:34,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:34,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:34,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:36:34,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:36:34,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:36:34,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:36:34,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146940542] [2020-10-28 18:36:34,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:36:34,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:36:34,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114862936] [2020-10-28 18:36:34,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:36:34,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:36:34,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:36:34,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:36:34,315 INFO L87 Difference]: Start difference. First operand 593 states and 809 transitions. Second operand 8 states. [2020-10-28 18:36:35,333 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-28 18:36:38,374 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2020-10-28 18:36:39,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:36:39,649 INFO L93 Difference]: Finished difference Result 1305 states and 1843 transitions. [2020-10-28 18:36:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 18:36:39,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-28 18:36:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:36:39,654 INFO L225 Difference]: With dead ends: 1305 [2020-10-28 18:36:39,654 INFO L226 Difference]: Without dead ends: 1156 [2020-10-28 18:36:39,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 18:36:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2020-10-28 18:36:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 593. [2020-10-28 18:36:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-28 18:36:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 807 transitions. [2020-10-28 18:36:39,746 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 807 transitions. Word has length 80 [2020-10-28 18:36:39,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:36:39,746 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 807 transitions. [2020-10-28 18:36:39,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:36:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 807 transitions. [2020-10-28 18:36:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 18:36:39,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:36:39,749 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] [2020-10-28 18:36:39,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:36:39,749 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:36:39,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:36:39,750 INFO L82 PathProgramCache]: Analyzing trace with hash 777428679, now seen corresponding path program 1 times [2020-10-28 18:36:39,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:36:39,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619779737] [2020-10-28 18:36:39,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:36:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:39,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:39,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:40,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:40,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:41,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:42,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:42,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:42,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:42,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:43,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:44,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:44,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:44,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 18:36:44,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:36:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:36:44,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:44,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:36:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:36:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 18:36:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:45,754 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:36:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:36:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:45,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:45,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:36:45,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:36:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:36:45,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:45,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:36:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:36:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:36:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:36:45,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619779737] [2020-10-28 18:36:45,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:36:45,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:36:45,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006220239] [2020-10-28 18:36:45,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:36:45,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:36:45,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:36:45,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:36:45,830 INFO L87 Difference]: Start difference. First operand 593 states and 807 transitions. Second operand 8 states. [2020-10-28 18:36:46,820 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-28 18:36:49,884 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2020-10-28 18:36:51,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:36:51,187 INFO L93 Difference]: Finished difference Result 1066 states and 1492 transitions. [2020-10-28 18:36:51,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 18:36:51,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-28 18:36:51,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:36:51,192 INFO L225 Difference]: With dead ends: 1066 [2020-10-28 18:36:51,192 INFO L226 Difference]: Without dead ends: 885 [2020-10-28 18:36:51,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 18:36:51,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-10-28 18:36:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 593. [2020-10-28 18:36:51,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-28 18:36:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 805 transitions. [2020-10-28 18:36:51,281 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 805 transitions. Word has length 80 [2020-10-28 18:36:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:36:51,281 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 805 transitions. [2020-10-28 18:36:51,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:36:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 805 transitions. [2020-10-28 18:36:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 18:36:51,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:36:51,283 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] [2020-10-28 18:36:51,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:36:51,284 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:36:51,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:36:51,284 INFO L82 PathProgramCache]: Analyzing trace with hash -756493682, now seen corresponding path program 1 times [2020-10-28 18:36:51,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:36:51,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187411421] [2020-10-28 18:36:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:36:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:51,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:53,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:53,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:53,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:55,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:56,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:56,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:56,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 18:36:56,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:36:56,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:36:56,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:56,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:36:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:36:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 18:36:56,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:57,393 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:36:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:36:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:36:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:36:57,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:36:57,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:36:57,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:36:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 18:36:57,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:36:57,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:36:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:36:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:36:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:36:57,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:36:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:36:57,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187411421] [2020-10-28 18:36:57,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:36:57,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:36:57,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764885334] [2020-10-28 18:36:57,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:36:57,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:36:57,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:36:57,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:36:57,497 INFO L87 Difference]: Start difference. First operand 593 states and 805 transitions. Second operand 7 states. [2020-10-28 18:36:58,444 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-28 18:37:01,587 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2020-10-28 18:37:03,167 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-28 18:37:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:37:03,280 INFO L93 Difference]: Finished difference Result 1073 states and 1489 transitions. [2020-10-28 18:37:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 18:37:03,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-28 18:37:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:37:03,284 INFO L225 Difference]: With dead ends: 1073 [2020-10-28 18:37:03,284 INFO L226 Difference]: Without dead ends: 929 [2020-10-28 18:37:03,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:37:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2020-10-28 18:37:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 639. [2020-10-28 18:37:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-28 18:37:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 870 transitions. [2020-10-28 18:37:03,383 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 870 transitions. Word has length 80 [2020-10-28 18:37:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:37:03,383 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 870 transitions. [2020-10-28 18:37:03,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:37:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 870 transitions. [2020-10-28 18:37:03,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 18:37:03,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:37:03,386 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] [2020-10-28 18:37:03,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:37:03,386 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:37:03,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:37:03,386 INFO L82 PathProgramCache]: Analyzing trace with hash -430804371, now seen corresponding path program 1 times [2020-10-28 18:37:03,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:37:03,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060292936] [2020-10-28 18:37:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:37:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:03,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:03,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:03,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:04,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:05,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:05,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:08,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:08,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:08,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 18:37:08,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:37:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:37:08,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:08,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:37:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:37:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 18:37:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:09,401 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:37:09,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:37:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:09,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:09,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:09,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:37:09,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:37:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:37:09,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:09,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:09,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:37:09,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:37:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:37:09,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:37:09,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060292936] [2020-10-28 18:37:09,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:37:09,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:37:09,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977669388] [2020-10-28 18:37:09,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:37:09,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:37:09,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:37:09,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:37:09,447 INFO L87 Difference]: Start difference. First operand 639 states and 870 transitions. Second operand 7 states. [2020-10-28 18:37:10,433 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 362 [2020-10-28 18:37:13,139 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2020-10-28 18:37:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:37:14,070 INFO L93 Difference]: Finished difference Result 1221 states and 1667 transitions. [2020-10-28 18:37:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 18:37:14,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-28 18:37:14,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:37:14,074 INFO L225 Difference]: With dead ends: 1221 [2020-10-28 18:37:14,074 INFO L226 Difference]: Without dead ends: 868 [2020-10-28 18:37:14,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-28 18:37:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2020-10-28 18:37:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 639. [2020-10-28 18:37:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-28 18:37:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 866 transitions. [2020-10-28 18:37:14,176 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 866 transitions. Word has length 80 [2020-10-28 18:37:14,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:37:14,177 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 866 transitions. [2020-10-28 18:37:14,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:37:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 866 transitions. [2020-10-28 18:37:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 18:37:14,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:37:14,179 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] [2020-10-28 18:37:14,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:37:14,179 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:37:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:37:14,179 INFO L82 PathProgramCache]: Analyzing trace with hash -644762742, now seen corresponding path program 1 times [2020-10-28 18:37:14,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:37:14,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974069645] [2020-10-28 18:37:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:37:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:14,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:14,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:18,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:18,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:19,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:19,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 18:37:19,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:37:19,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:37:19,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:19,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:37:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:37:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 18:37:19,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:20,187 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:37:20,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:37:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:20,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:20,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:37:20,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:37:20,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:37:20,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:20,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:37:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:37:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:37:20,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:37:20,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974069645] [2020-10-28 18:37:20,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:37:20,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:37:20,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089342520] [2020-10-28 18:37:20,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:37:20,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:37:20,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:37:20,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:37:20,236 INFO L87 Difference]: Start difference. First operand 639 states and 866 transitions. Second operand 8 states. [2020-10-28 18:37:21,228 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-28 18:37:24,619 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2020-10-28 18:37:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:37:26,227 INFO L93 Difference]: Finished difference Result 1341 states and 1877 transitions. [2020-10-28 18:37:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 18:37:26,228 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-28 18:37:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:37:26,232 INFO L225 Difference]: With dead ends: 1341 [2020-10-28 18:37:26,232 INFO L226 Difference]: Without dead ends: 1202 [2020-10-28 18:37:26,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 18:37:26,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-10-28 18:37:26,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 639. [2020-10-28 18:37:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-28 18:37:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 865 transitions. [2020-10-28 18:37:26,331 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 865 transitions. Word has length 81 [2020-10-28 18:37:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:37:26,332 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 865 transitions. [2020-10-28 18:37:26,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:37:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 865 transitions. [2020-10-28 18:37:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 18:37:26,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:37:26,333 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] [2020-10-28 18:37:26,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:37:26,333 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:37:26,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:37:26,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1884745356, now seen corresponding path program 1 times [2020-10-28 18:37:26,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:37:26,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058337202] [2020-10-28 18:37:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:37:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:26,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:26,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:26,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:26,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:27,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:27,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:28,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:28,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:28,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:29,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:31,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:31,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 18:37:31,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:37:31,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:37:31,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:31,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:37:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:37:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 18:37:31,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:32,400 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:37:32,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:37:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:37:32,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:37:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:37:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:32,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:37:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:37:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:37:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:37:32,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058337202] [2020-10-28 18:37:32,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:37:32,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:37:32,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68308378] [2020-10-28 18:37:32,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:37:32,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:37:32,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:37:32,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:37:32,468 INFO L87 Difference]: Start difference. First operand 639 states and 865 transitions. Second operand 8 states. [2020-10-28 18:37:33,455 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-28 18:37:35,820 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2020-10-28 18:37:36,890 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-28 18:37:37,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:37:37,400 INFO L93 Difference]: Finished difference Result 952 states and 1302 transitions. [2020-10-28 18:37:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 18:37:37,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-28 18:37:37,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:37:37,403 INFO L225 Difference]: With dead ends: 952 [2020-10-28 18:37:37,403 INFO L226 Difference]: Without dead ends: 658 [2020-10-28 18:37:37,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-28 18:37:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-28 18:37:37,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 473. [2020-10-28 18:37:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-28 18:37:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 628 transitions. [2020-10-28 18:37:37,489 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 628 transitions. Word has length 82 [2020-10-28 18:37:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:37:37,489 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 628 transitions. [2020-10-28 18:37:37,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:37:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 628 transitions. [2020-10-28 18:37:37,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 18:37:37,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:37:37,491 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] [2020-10-28 18:37:37,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:37:37,492 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:37:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:37:37,492 INFO L82 PathProgramCache]: Analyzing trace with hash 33073612, now seen corresponding path program 1 times [2020-10-28 18:37:37,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:37:37,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401893154] [2020-10-28 18:37:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:37:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:37,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:37,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:38,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:38,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:39,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:42,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:42,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 18:37:42,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:37:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:37:42,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:42,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:42,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:37:42,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 18:37:42,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 18:37:42,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:43,493 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:37:43,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:37:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:43,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:43,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:43,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:37:43,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:37:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:37:43,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:43,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:37:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:37:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:37:43,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:37:43,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401893154] [2020-10-28 18:37:43,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:37:43,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:37:43,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674676505] [2020-10-28 18:37:43,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:37:43,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:37:43,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:37:43,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:37:43,532 INFO L87 Difference]: Start difference. First operand 473 states and 628 transitions. Second operand 6 states. [2020-10-28 18:37:44,452 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-28 18:37:46,854 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-28 18:37:48,020 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-28 18:37:50,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:37:50,101 INFO L93 Difference]: Finished difference Result 1807 states and 2543 transitions. [2020-10-28 18:37:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:37:50,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-28 18:37:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:37:50,108 INFO L225 Difference]: With dead ends: 1807 [2020-10-28 18:37:50,108 INFO L226 Difference]: Without dead ends: 1660 [2020-10-28 18:37:50,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:37:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2020-10-28 18:37:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1003. [2020-10-28 18:37:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 18:37:50,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1402 transitions. [2020-10-28 18:37:50,361 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1402 transitions. Word has length 82 [2020-10-28 18:37:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:37:50,361 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1402 transitions. [2020-10-28 18:37:50,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:37:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1402 transitions. [2020-10-28 18:37:50,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 18:37:50,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:37:50,363 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] [2020-10-28 18:37:50,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:37:50,364 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:37:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:37:50,364 INFO L82 PathProgramCache]: Analyzing trace with hash 599491342, now seen corresponding path program 1 times [2020-10-28 18:37:50,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:37:50,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822803861] [2020-10-28 18:37:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:37:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:50,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:50,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:51,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:51,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:54,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:55,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:55,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 18:37:55,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:37:55,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:37:55,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:55,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:55,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:37:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:37:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 18:37:55,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:56,399 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:37:56,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:37:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:37:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:37:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:37:56,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:37:56,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:37:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 18:37:56,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:37:56,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:37:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:37:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:37:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:37:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:37:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:37:56,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822803861] [2020-10-28 18:37:56,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:37:56,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:37:56,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452976923] [2020-10-28 18:37:56,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:37:56,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:37:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:37:56,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:37:56,460 INFO L87 Difference]: Start difference. First operand 1003 states and 1402 transitions. Second operand 8 states. [2020-10-28 18:37:57,469 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-28 18:37:59,832 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2020-10-28 18:38:01,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:38:01,004 INFO L93 Difference]: Finished difference Result 2704 states and 3893 transitions. [2020-10-28 18:38:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 18:38:01,005 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-28 18:38:01,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:38:01,012 INFO L225 Difference]: With dead ends: 2704 [2020-10-28 18:38:01,012 INFO L226 Difference]: Without dead ends: 2046 [2020-10-28 18:38:01,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 18:38:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2020-10-28 18:38:01,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1003. [2020-10-28 18:38:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 18:38:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1398 transitions. [2020-10-28 18:38:01,234 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1398 transitions. Word has length 82 [2020-10-28 18:38:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:38:01,234 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1398 transitions. [2020-10-28 18:38:01,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:38:01,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1398 transitions. [2020-10-28 18:38:01,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 18:38:01,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:38:01,236 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] [2020-10-28 18:38:01,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:38:01,236 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:38:01,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:38:01,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1962387185, now seen corresponding path program 1 times [2020-10-28 18:38:01,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:38:01,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861983784] [2020-10-28 18:38:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:38:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:02,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:02,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:03,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:06,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:06,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 18:38:06,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:38:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:38:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:06,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:38:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:38:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 18:38:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:07,395 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 18:38:07,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:38:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:07,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:07,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:38:07,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:38:07,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:38:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:38:07,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:38:07,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:38:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:38:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:38:07,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:38:07,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:38:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:38:07,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861983784] [2020-10-28 18:38:07,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:38:07,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:38:07,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020062709] [2020-10-28 18:38:07,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:38:07,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:38:07,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:38:07,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:38:07,443 INFO L87 Difference]: Start difference. First operand 1003 states and 1398 transitions. Second operand 8 states. [2020-10-28 18:38:08,437 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-28 18:38:10,898 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2020-10-28 18:38:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:38:12,571 INFO L93 Difference]: Finished difference Result 3244 states and 4694 transitions. [2020-10-28 18:38:12,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 18:38:12,571 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-28 18:38:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:38:12,580 INFO L225 Difference]: With dead ends: 3244 [2020-10-28 18:38:12,580 INFO L226 Difference]: Without dead ends: 2730 [2020-10-28 18:38:12,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 18:38:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2020-10-28 18:38:12,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 1003. [2020-10-28 18:38:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 18:38:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1396 transitions. [2020-10-28 18:38:12,783 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1396 transitions. Word has length 83 [2020-10-28 18:38:12,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:38:12,783 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1396 transitions. [2020-10-28 18:38:12,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:38:12,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1396 transitions. [2020-10-28 18:38:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 18:38:12,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:38:12,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:38:12,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:38:12,785 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:38:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:38:12,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1233493299, now seen corresponding path program 1 times [2020-10-28 18:38:12,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:38:12,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573381865] [2020-10-28 18:38:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:38:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:38:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:13,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:14,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:38:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking...