/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=DEEPEST --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_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:33:30,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:33:30,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:33:30,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:33:30,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:33:30,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:33:30,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:33:30,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:33:30,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:33:30,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:33:30,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:33:30,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:33:30,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:33:30,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:33:30,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:33:30,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:33:30,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:33:30,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:33:30,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:33:30,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:33:30,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:33:30,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:33:30,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:33:30,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:33:30,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:33:30,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:33:30,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:33:30,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:33:30,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:33:30,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:33:30,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:33:30,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:33:30,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:33:30,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:33:30,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:33:30,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:33:30,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:33:30,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:33:30,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:33:30,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:33:30,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:33:30,679 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 [2020-10-27 23:33:30,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:33:30,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:33:30,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:33:30,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:33:30,729 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:33:30,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:33:30,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:33:30,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:33:30,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:33:30,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:33:30,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:33:30,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:33:30,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:33:30,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:33:30,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:33:30,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:33:30,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:33:30,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:33:30,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:33:30,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:33:30,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:33:30,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:33:30,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:33:30,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:33:30,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:33:30,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:33:30,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:33:30,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:33:30,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:33:30,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:33:31,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:33:31,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:33:31,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:33:31,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:33:31,155 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:33:31,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 23:33:31,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b66326c6/df94cb16b6db4c3cb117e58d1db54485/FLAG60dd3463a [2020-10-27 23:33:32,058 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:33:32,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 23:33:32,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b66326c6/df94cb16b6db4c3cb117e58d1db54485/FLAG60dd3463a [2020-10-27 23:33:32,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b66326c6/df94cb16b6db4c3cb117e58d1db54485 [2020-10-27 23:33:32,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:33:32,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:33:32,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:33:32,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:33:32,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:33:32,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:33:32" (1/1) ... [2020-10-27 23:33:32,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a7d1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32, skipping insertion in model container [2020-10-27 23:33:32,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:33:32" (1/1) ... [2020-10-27 23:33:32,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:33:32,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:33:32,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:33:32,769 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:33:32,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:33:32,992 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:33:32,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32 WrapperNode [2020-10-27 23:33:32,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:33:32,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:33:32,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:33:32,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:33:33,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32" (1/1) ... [2020-10-27 23:33:33,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32" (1/1) ... [2020-10-27 23:33:33,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32" (1/1) ... [2020-10-27 23:33:33,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32" (1/1) ... [2020-10-27 23:33:33,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32" (1/1) ... [2020-10-27 23:33:33,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32" (1/1) ... [2020-10-27 23:33:33,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32" (1/1) ... [2020-10-27 23:33:33,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:33:33,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:33:33,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:33:33,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:33:33,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32" (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 [2020-10-27 23:33:33,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:33:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:33:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:33:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:33:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:33:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:33:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:33:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:33:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:33:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:33:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:33:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:33:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:33:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:33:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:33:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:33:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:33:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:33:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:33:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:33:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:33:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:33:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:33:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:33:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:33:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:33:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:33:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:33:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:33:35,192 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:33:35,193 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:33:35,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:33:35 BoogieIcfgContainer [2020-10-27 23:33:35,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:33:35,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:33:35,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:33:35,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:33:35,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:33:32" (1/3) ... [2020-10-27 23:33:35,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:33:35, skipping insertion in model container [2020-10-27 23:33:35,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:32" (2/3) ... [2020-10-27 23:33:35,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:33:35, skipping insertion in model container [2020-10-27 23:33:35,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:33:35" (3/3) ... [2020-10-27 23:33:35,205 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 23:33:35,218 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:33:35,224 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:33:35,238 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:33:35,271 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:33:35,271 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:33:35,272 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:33:35,272 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:33:35,272 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:33:35,272 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:33:35,272 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:33:35,272 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:33:35,299 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-27 23:33:35,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 23:33:35,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:33:35,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:33:35,319 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:33:35,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:33:35,326 INFO L82 PathProgramCache]: Analyzing trace with hash -655812944, now seen corresponding path program 1 times [2020-10-27 23:33:35,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:33:35,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600106417] [2020-10-27 23:33:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:33:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:36,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:40,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:40,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 23:33:40,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:33:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 23:33:40,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:33:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 23:33:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:33:40,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:33:42,252 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:33:42,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:33:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:42,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:42,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:33:42,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:33:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 23:33:42,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:33:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:33:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:33:42,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:33:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:33:42,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600106417] [2020-10-27 23:33:42,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:33:42,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:33:42,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627780991] [2020-10-27 23:33:42,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:33:42,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:33:42,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:33:42,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:33:42,416 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 7 states. [2020-10-27 23:33:43,337 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 23:33:46,480 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:33:47,155 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:33:47,769 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:33:48,516 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:33:49,104 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:33:49,742 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:33:49,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:33:49,873 INFO L93 Difference]: Finished difference Result 1435 states and 2446 transitions. [2020-10-27 23:33:49,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 23:33:49,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-27 23:33:49,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:33:49,906 INFO L225 Difference]: With dead ends: 1435 [2020-10-27 23:33:49,906 INFO L226 Difference]: Without dead ends: 1273 [2020-10-27 23:33:49,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:33:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-10-27 23:33:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 460. [2020-10-27 23:33:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-27 23:33:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 765 transitions. [2020-10-27 23:33:50,020 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 765 transitions. Word has length 115 [2020-10-27 23:33:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:33:50,021 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 765 transitions. [2020-10-27 23:33:50,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:33:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 765 transitions. [2020-10-27 23:33:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 23:33:50,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:33:50,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:33:50,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:33:50,029 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:33:50,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:33:50,029 INFO L82 PathProgramCache]: Analyzing trace with hash -907521539, now seen corresponding path program 1 times [2020-10-27 23:33:50,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:33:50,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768394003] [2020-10-27 23:33:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:33:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:51,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:51,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:55,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:55,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 23:33:55,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:33:55,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 23:33:55,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:55,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:33:55,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 23:33:55,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:33:55,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:33:55,926 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:33:55,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:33:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:55,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:55,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:55,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:33:55,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:33:55,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 23:33:55,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:33:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:33:55,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:33:55,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:33:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:33:56,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768394003] [2020-10-27 23:33:56,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:33:56,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:33:56,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582825946] [2020-10-27 23:33:56,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:33:56,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:33:56,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:33:56,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:33:56,036 INFO L87 Difference]: Start difference. First operand 460 states and 765 transitions. Second operand 8 states. [2020-10-27 23:33:56,758 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2020-10-27 23:33:59,728 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:00,412 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:34:01,129 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:34:01,840 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:34:02,614 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:34:03,310 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:34:04,118 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:34:05,390 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:34:06,111 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:34:07,069 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:34:07,657 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:07,683 INFO L93 Difference]: Finished difference Result 3284 states and 5514 transitions. [2020-10-27 23:34:07,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:34:07,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-27 23:34:07,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:07,701 INFO L225 Difference]: With dead ends: 3284 [2020-10-27 23:34:07,702 INFO L226 Difference]: Without dead ends: 3017 [2020-10-27 23:34:07,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2020-10-27 23:34:07,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-10-27 23:34:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1180. [2020-10-27 23:34:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-10-27 23:34:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1980 transitions. [2020-10-27 23:34:07,858 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1980 transitions. Word has length 116 [2020-10-27 23:34:07,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:07,861 INFO L481 AbstractCegarLoop]: Abstraction has 1180 states and 1980 transitions. [2020-10-27 23:34:07,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:34:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1980 transitions. [2020-10-27 23:34:07,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 23:34:07,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:07,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:07,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:34:07,870 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:07,871 INFO L82 PathProgramCache]: Analyzing trace with hash 20745321, now seen corresponding path program 1 times [2020-10-27 23:34:07,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:07,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528789143] [2020-10-27 23:34:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:08,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:08,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:09,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:12,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:12,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 23:34:12,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:34:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:34:12,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:34:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 23:34:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:34:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:13,788 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:34:13,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:13,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:13,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:13,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:13,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:34:13,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:13,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:13,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:13,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528789143] [2020-10-27 23:34:13,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:13,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:34:13,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316227914] [2020-10-27 23:34:13,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:34:13,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:13,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:34:13,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:13,870 INFO L87 Difference]: Start difference. First operand 1180 states and 1980 transitions. Second operand 5 states. [2020-10-27 23:34:14,513 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:17,071 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:34:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:17,220 INFO L93 Difference]: Finished difference Result 3891 states and 6554 transitions. [2020-10-27 23:34:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:34:17,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-27 23:34:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:17,245 INFO L225 Difference]: With dead ends: 3891 [2020-10-27 23:34:17,248 INFO L226 Difference]: Without dead ends: 3001 [2020-10-27 23:34:17,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:34:17,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-10-27 23:34:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2101. [2020-10-27 23:34:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-10-27 23:34:17,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 3532 transitions. [2020-10-27 23:34:17,433 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 3532 transitions. Word has length 117 [2020-10-27 23:34:17,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:17,434 INFO L481 AbstractCegarLoop]: Abstraction has 2101 states and 3532 transitions. [2020-10-27 23:34:17,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:34:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 3532 transitions. [2020-10-27 23:34:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 23:34:17,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:17,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:17,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:34:17,437 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:17,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:17,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1126454378, now seen corresponding path program 1 times [2020-10-27 23:34:17,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:17,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629445954] [2020-10-27 23:34:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:17,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:22,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:22,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 23:34:22,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:34:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:34:22,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:34:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 23:34:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:34:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:23,145 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:34:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:23,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:23,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:23,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:34:23,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:23,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:23,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:23,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629445954] [2020-10-27 23:34:23,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:23,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:34:23,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113570197] [2020-10-27 23:34:23,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:34:23,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:23,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:34:23,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:23,213 INFO L87 Difference]: Start difference. First operand 2101 states and 3532 transitions. Second operand 5 states. [2020-10-27 23:34:23,849 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:26,467 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:34:26,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:26,687 INFO L93 Difference]: Finished difference Result 7435 states and 12522 transitions. [2020-10-27 23:34:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:34:26,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-27 23:34:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:26,718 INFO L225 Difference]: With dead ends: 7435 [2020-10-27 23:34:26,718 INFO L226 Difference]: Without dead ends: 5665 [2020-10-27 23:34:26,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:34:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2020-10-27 23:34:27,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 3878. [2020-10-27 23:34:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3878 states. [2020-10-27 23:34:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 6520 transitions. [2020-10-27 23:34:27,076 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 6520 transitions. Word has length 118 [2020-10-27 23:34:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:27,076 INFO L481 AbstractCegarLoop]: Abstraction has 3878 states and 6520 transitions. [2020-10-27 23:34:27,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:34:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 6520 transitions. [2020-10-27 23:34:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 23:34:27,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:27,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:27,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:34:27,080 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:27,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:27,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2106359330, now seen corresponding path program 1 times [2020-10-27 23:34:27,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:27,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589359281] [2020-10-27 23:34:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:27,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:27,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:32,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:32,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 23:34:32,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:34:32,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 23:34:32,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:34:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 23:34:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:34:32,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:32,850 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:34:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:32,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:32,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:32,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:32,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:34:32,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:32,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589359281] [2020-10-27 23:34:32,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:32,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:34:32,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596715216] [2020-10-27 23:34:32,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:34:32,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:32,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:34:32,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:32,920 INFO L87 Difference]: Start difference. First operand 3878 states and 6520 transitions. Second operand 5 states. [2020-10-27 23:34:33,605 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:36,161 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:34:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:36,587 INFO L93 Difference]: Finished difference Result 14447 states and 24298 transitions. [2020-10-27 23:34:36,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:34:36,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 23:34:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:36,643 INFO L225 Difference]: With dead ends: 14447 [2020-10-27 23:34:36,643 INFO L226 Difference]: Without dead ends: 10924 [2020-10-27 23:34:36,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:34:36,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10924 states. [2020-10-27 23:34:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10924 to 7370. [2020-10-27 23:34:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7370 states. [2020-10-27 23:34:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7370 states to 7370 states and 12372 transitions. [2020-10-27 23:34:37,360 INFO L78 Accepts]: Start accepts. Automaton has 7370 states and 12372 transitions. Word has length 119 [2020-10-27 23:34:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:37,360 INFO L481 AbstractCegarLoop]: Abstraction has 7370 states and 12372 transitions. [2020-10-27 23:34:37,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:34:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7370 states and 12372 transitions. [2020-10-27 23:34:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:34:37,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:37,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:37,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:34:37,366 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:37,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:37,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1656484632, now seen corresponding path program 1 times [2020-10-27 23:34:37,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:37,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789889183] [2020-10-27 23:34:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:37,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:37,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:38,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:42,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:42,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:34:42,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:34:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:34:42,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:34:42,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 23:34:42,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:34:42,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:43,094 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:34:43,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:43,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:43,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:43,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:34:43,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:43,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789889183] [2020-10-27 23:34:43,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:43,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:34:43,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013109539] [2020-10-27 23:34:43,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:34:43,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:43,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:34:43,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:34:43,157 INFO L87 Difference]: Start difference. First operand 7370 states and 12372 transitions. Second operand 4 states. [2020-10-27 23:34:43,847 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:47,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:47,022 INFO L93 Difference]: Finished difference Result 19882 states and 33394 transitions. [2020-10-27 23:34:47,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:34:47,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:34:47,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:47,068 INFO L225 Difference]: With dead ends: 19882 [2020-10-27 23:34:47,068 INFO L226 Difference]: Without dead ends: 12799 [2020-10-27 23:34:47,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12799 states. [2020-10-27 23:34:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12799 to 12796. [2020-10-27 23:34:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12796 states. [2020-10-27 23:34:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12796 states to 12796 states and 21430 transitions. [2020-10-27 23:34:48,096 INFO L78 Accepts]: Start accepts. Automaton has 12796 states and 21430 transitions. Word has length 121 [2020-10-27 23:34:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:48,096 INFO L481 AbstractCegarLoop]: Abstraction has 12796 states and 21430 transitions. [2020-10-27 23:34:48,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:34:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 12796 states and 21430 transitions. [2020-10-27 23:34:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:34:48,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:48,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:48,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:34:48,099 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:48,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:48,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1818638548, now seen corresponding path program 1 times [2020-10-27 23:34:48,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:48,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548621136] [2020-10-27 23:34:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:48,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:48,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:53,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:53,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:53,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:34:53,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:34:53,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 23:34:53,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:34:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 23:34:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:34:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:53,910 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:34:53,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:53,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:53,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:53,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:53,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:34:53,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:53,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548621136] [2020-10-27 23:34:53,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:53,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:34:53,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230167193] [2020-10-27 23:34:53,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:34:53,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:53,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:34:53,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:34:53,961 INFO L87 Difference]: Start difference. First operand 12796 states and 21430 transitions. Second operand 4 states. [2020-10-27 23:34:54,649 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:58,152 INFO L93 Difference]: Finished difference Result 34690 states and 58122 transitions. [2020-10-27 23:34:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:34:58,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:34:58,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:58,225 INFO L225 Difference]: With dead ends: 34690 [2020-10-27 23:34:58,226 INFO L226 Difference]: Without dead ends: 22183 [2020-10-27 23:34:58,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22183 states. [2020-10-27 23:34:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22183 to 22123. [2020-10-27 23:34:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22123 states. [2020-10-27 23:34:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22123 states to 22123 states and 36959 transitions. [2020-10-27 23:34:59,849 INFO L78 Accepts]: Start accepts. Automaton has 22123 states and 36959 transitions. Word has length 121 [2020-10-27 23:34:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:59,850 INFO L481 AbstractCegarLoop]: Abstraction has 22123 states and 36959 transitions. [2020-10-27 23:34:59,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:34:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 22123 states and 36959 transitions. [2020-10-27 23:34:59,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:34:59,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:59,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:59,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:34:59,853 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:59,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1977188974, now seen corresponding path program 1 times [2020-10-27 23:34:59,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:59,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869776109] [2020-10-27 23:34:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:59,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:00,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:03,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:03,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:35:03,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:35:03,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4038 [2020-10-27 23:35:03,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:03,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:35:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 23:35:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:35:03,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:04,676 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:35:04,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:04,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:04,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:04,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:04,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:04,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:35:04,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:04,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:04,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869776109] [2020-10-27 23:35:04,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:04,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:35:04,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465564618] [2020-10-27 23:35:04,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:35:04,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:04,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:35:04,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:35:04,748 INFO L87 Difference]: Start difference. First operand 22123 states and 36959 transitions. Second operand 7 states. [2020-10-27 23:35:05,604 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 23:35:08,225 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:35:09,058 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:35:09,713 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:35:10,993 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:35:11,704 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:35:12,763 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:35:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:15,587 INFO L93 Difference]: Finished difference Result 77383 states and 129367 transitions. [2020-10-27 23:35:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 23:35:15,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-27 23:35:15,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:15,745 INFO L225 Difference]: With dead ends: 77383 [2020-10-27 23:35:15,745 INFO L226 Difference]: Without dead ends: 55492 [2020-10-27 23:35:15,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:35:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55492 states. [2020-10-27 23:35:17,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55492 to 22123. [2020-10-27 23:35:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22123 states. [2020-10-27 23:35:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22123 states to 22123 states and 36895 transitions. [2020-10-27 23:35:17,644 INFO L78 Accepts]: Start accepts. Automaton has 22123 states and 36895 transitions. Word has length 121 [2020-10-27 23:35:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:17,644 INFO L481 AbstractCegarLoop]: Abstraction has 22123 states and 36895 transitions. [2020-10-27 23:35:17,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:35:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 22123 states and 36895 transitions. [2020-10-27 23:35:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:35:17,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:17,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:17,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:35:17,647 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:17,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2065168613, now seen corresponding path program 1 times [2020-10-27 23:35:17,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:17,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098553147] [2020-10-27 23:35:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:17,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:18,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:18,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:22,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:22,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:35:22,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:35:22,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 23:35:22,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 23:35:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:35:22,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:23,417 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:35:23,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:23,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:23,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:23,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:23,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:35:23,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:23,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:23,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:23,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:23,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:23,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098553147] [2020-10-27 23:35:23,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:23,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:23,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137399539] [2020-10-27 23:35:23,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:23,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:23,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:23,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:23,483 INFO L87 Difference]: Start difference. First operand 22123 states and 36895 transitions. Second operand 5 states. [2020-10-27 23:35:26,179 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:35:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:29,321 INFO L93 Difference]: Finished difference Result 62666 states and 104564 transitions. [2020-10-27 23:35:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:35:29,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 23:35:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:29,412 INFO L225 Difference]: With dead ends: 62666 [2020-10-27 23:35:29,413 INFO L226 Difference]: Without dead ends: 40774 [2020-10-27 23:35:29,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:35:29,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40774 states. [2020-10-27 23:35:32,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40774 to 40315. [2020-10-27 23:35:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40315 states. [2020-10-27 23:35:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40315 states to 40315 states and 66911 transitions. [2020-10-27 23:35:32,427 INFO L78 Accepts]: Start accepts. Automaton has 40315 states and 66911 transitions. Word has length 121 [2020-10-27 23:35:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:32,427 INFO L481 AbstractCegarLoop]: Abstraction has 40315 states and 66911 transitions. [2020-10-27 23:35:32,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 40315 states and 66911 transitions. [2020-10-27 23:35:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:35:32,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:32,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:32,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:35:32,430 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:32,430 INFO L82 PathProgramCache]: Analyzing trace with hash -755430332, now seen corresponding path program 1 times [2020-10-27 23:35:32,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:32,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618653325] [2020-10-27 23:35:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:32,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:32,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:32,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:37,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:37,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:35:37,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:35:37,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:35:37,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:35:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 23:35:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:35:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:38,168 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:35:38,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:38,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:38,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:38,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:38,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:35:38,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:38,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:38,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:38,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:38,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:38,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618653325] [2020-10-27 23:35:38,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:38,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:38,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946851901] [2020-10-27 23:35:38,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:38,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:38,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:38,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:38,225 INFO L87 Difference]: Start difference. First operand 40315 states and 66911 transitions. Second operand 4 states. [2020-10-27 23:35:38,961 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:35:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:46,303 INFO L93 Difference]: Finished difference Result 111857 states and 185859 transitions. [2020-10-27 23:35:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:46,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:35:46,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:46,422 INFO L225 Difference]: With dead ends: 111857 [2020-10-27 23:35:46,422 INFO L226 Difference]: Without dead ends: 71764 [2020-10-27 23:35:46,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71764 states. [2020-10-27 23:35:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71764 to 71732. [2020-10-27 23:35:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71732 states. [2020-10-27 23:35:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71732 states to 71732 states and 118811 transitions. [2020-10-27 23:35:52,413 INFO L78 Accepts]: Start accepts. Automaton has 71732 states and 118811 transitions. Word has length 121 [2020-10-27 23:35:52,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:52,413 INFO L481 AbstractCegarLoop]: Abstraction has 71732 states and 118811 transitions. [2020-10-27 23:35:52,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:52,413 INFO L276 IsEmpty]: Start isEmpty. Operand 71732 states and 118811 transitions. [2020-10-27 23:35:52,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:35:52,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:52,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:52,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:35:52,415 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:52,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:52,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1898565603, now seen corresponding path program 1 times [2020-10-27 23:35:52,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:52,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991565291] [2020-10-27 23:35:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:52,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:52,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:53,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:53,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:57,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:57,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:35:57,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:35:57,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:35:57,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 23:35:57,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:35:57,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:58,065 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:35:58,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:58,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:58,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:58,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:35:58,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:58,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991565291] [2020-10-27 23:35:58,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:58,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:58,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856836777] [2020-10-27 23:35:58,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:58,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:58,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:58,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:58,103 INFO L87 Difference]: Start difference. First operand 71732 states and 118811 transitions. Second operand 5 states. [2020-10-27 23:36:00,592 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:36:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:10,729 INFO L93 Difference]: Finished difference Result 199578 states and 330079 transitions. [2020-10-27 23:36:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:36:10,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 23:36:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:10,945 INFO L225 Difference]: With dead ends: 199578 [2020-10-27 23:36:10,945 INFO L226 Difference]: Without dead ends: 128039 [2020-10-27 23:36:11,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:36:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128039 states. [2020-10-27 23:36:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128039 to 126244. [2020-10-27 23:36:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126244 states. [2020-10-27 23:36:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126244 states to 126244 states and 205819 transitions. [2020-10-27 23:36:21,297 INFO L78 Accepts]: Start accepts. Automaton has 126244 states and 205819 transitions. Word has length 121 [2020-10-27 23:36:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:21,298 INFO L481 AbstractCegarLoop]: Abstraction has 126244 states and 205819 transitions. [2020-10-27 23:36:21,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:36:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 126244 states and 205819 transitions. [2020-10-27 23:36:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:36:21,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:21,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:36:21,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:36:21,300 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:21,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:21,300 INFO L82 PathProgramCache]: Analyzing trace with hash 763619792, now seen corresponding path program 1 times [2020-10-27 23:36:21,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:21,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426509814] [2020-10-27 23:36:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:21,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:21,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:21,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:22,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:26,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:26,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:36:26,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:36:26,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 23:36:26,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:36:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 23:36:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:36:26,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:26,995 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:36:26,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:27,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:27,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:27,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:27,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:36:27,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:27,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426509814] [2020-10-27 23:36:27,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:27,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:36:27,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599562586] [2020-10-27 23:36:27,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:36:27,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:27,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:36:27,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:36:27,049 INFO L87 Difference]: Start difference. First operand 126244 states and 205819 transitions. Second operand 4 states. [2020-10-27 23:36:27,679 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:36:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:47,248 INFO L93 Difference]: Finished difference Result 343786 states and 560255 transitions. [2020-10-27 23:36:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:36:47,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:36:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:47,691 INFO L225 Difference]: With dead ends: 343786 [2020-10-27 23:36:47,691 INFO L226 Difference]: Without dead ends: 217735 [2020-10-27 23:36:47,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217735 states. [2020-10-27 23:37:06,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217735 to 217732. [2020-10-27 23:37:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217732 states.