/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=SHALLOWEST --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.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:01:26,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:01:26,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:01:26,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:01:26,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:01:26,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:01:26,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:01:26,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:01:26,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:01:26,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:01:26,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:01:26,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:01:26,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:01:26,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:01:26,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:01:26,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:01:26,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:01:26,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:01:26,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:01:26,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:01:26,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:01:26,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:01:26,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:01:26,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:01:26,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:01:26,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:01:26,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:01:26,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:01:26,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:01:26,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:01:26,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:01:26,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:01:26,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:01:26,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:01:26,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:01:26,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:01:26,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:01:26,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:01:26,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:01:26,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:01:26,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:01:26,246 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 05:01:26,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:01:26,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:01:26,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:01:26,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:01:26,311 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:01:26,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:01:26,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:01:26,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:01:26,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:01:26,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:01:26,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:01:26,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:01:26,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:01:26,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:01:26,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:01:26,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:01:26,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:01:26,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:01:26,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:01:26,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:01:26,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:01:26,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:01:26,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:01:26,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:01:26,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:01:26,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:01:26,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:01:26,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:01:26,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:01:26,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:01:26,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:01:26,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:01:26,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:01:26,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:01:26,759 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:01:26,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:01:26,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2609c48f4/d34601a2c11c40b180430f94bbd49619/FLAG8be4e1fc9 [2020-10-27 05:01:27,747 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:01:27,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:01:27,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2609c48f4/d34601a2c11c40b180430f94bbd49619/FLAG8be4e1fc9 [2020-10-27 05:01:27,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2609c48f4/d34601a2c11c40b180430f94bbd49619 [2020-10-27 05:01:27,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:01:27,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:01:27,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:01:27,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:01:27,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:01:27,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:01:27" (1/1) ... [2020-10-27 05:01:27,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6795ae35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:27, skipping insertion in model container [2020-10-27 05:01:27,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:01:27" (1/1) ... [2020-10-27 05:01:27,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:01:28,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:01:29,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:01:29,255 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:01:29,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:01:29,981 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:01:29,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:29 WrapperNode [2020-10-27 05:01:29,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:01:29,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:01:29,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:01:29,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:01:29,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:29" (1/1) ... [2020-10-27 05:01:30,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:29" (1/1) ... [2020-10-27 05:01:30,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:29" (1/1) ... [2020-10-27 05:01:30,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:29" (1/1) ... [2020-10-27 05:01:30,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:29" (1/1) ... [2020-10-27 05:01:30,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:29" (1/1) ... [2020-10-27 05:01:30,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:29" (1/1) ... [2020-10-27 05:01:30,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:01:30,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:01:30,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:01:30,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:01:30,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:29" (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 05:01:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:01:30,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:01:30,337 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:01:30,337 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:01:30,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:01:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:01:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:01:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:01:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:01:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:01:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:01:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:01:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:01:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:01:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:01:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:01:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:01:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:01:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:01:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:01:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:01:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:01:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:01:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:01:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:01:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:01:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:01:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:01:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:01:33,782 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:01:33,782 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:01:33,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:01:33 BoogieIcfgContainer [2020-10-27 05:01:33,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:01:33,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:01:33,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:01:33,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:01:33,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:01:27" (1/3) ... [2020-10-27 05:01:33,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a86503a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:01:33, skipping insertion in model container [2020-10-27 05:01:33,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:29" (2/3) ... [2020-10-27 05:01:33,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a86503a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:01:33, skipping insertion in model container [2020-10-27 05:01:33,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:01:33" (3/3) ... [2020-10-27 05:01:33,807 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:01:33,826 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:01:33,832 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:01:33,845 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:01:33,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:01:33,881 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:01:33,881 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:01:33,882 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:01:33,882 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:01:33,882 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:01:33,882 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:01:33,882 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:01:33,919 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states. [2020-10-27 05:01:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 05:01:33,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:33,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:33,952 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:33,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:33,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1678978365, now seen corresponding path program 1 times [2020-10-27 05:01:33,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:33,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581126490] [2020-10-27 05:01:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:34,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:39,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:39,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:39,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 05:01:39,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:01:39,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5170 [2020-10-27 05:01:39,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:01:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:01:41,026 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:01:41,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:41,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:41,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:41,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:01:41,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:41,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:41,338 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 05:01:41,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581126490] [2020-10-27 05:01:41,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:41,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:41,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127424437] [2020-10-27 05:01:41,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:41,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:41,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:41,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:41,376 INFO L87 Difference]: Start difference. First operand 938 states. Second operand 5 states. [2020-10-27 05:01:52,946 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:01:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:55,736 INFO L93 Difference]: Finished difference Result 2701 states and 4922 transitions. [2020-10-27 05:01:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:01:55,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-27 05:01:55,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:55,772 INFO L225 Difference]: With dead ends: 2701 [2020-10-27 05:01:55,773 INFO L226 Difference]: Without dead ends: 1806 [2020-10-27 05:01:55,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:55,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2020-10-27 05:01:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1720. [2020-10-27 05:01:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1720 states. [2020-10-27 05:01:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2633 transitions. [2020-10-27 05:01:55,992 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2633 transitions. Word has length 309 [2020-10-27 05:01:55,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:55,993 INFO L481 AbstractCegarLoop]: Abstraction has 1720 states and 2633 transitions. [2020-10-27 05:01:55,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2633 transitions. [2020-10-27 05:01:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 05:01:56,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:56,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:56,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:01:56,004 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:56,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:56,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2124436437, now seen corresponding path program 1 times [2020-10-27 05:01:56,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:56,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228212036] [2020-10-27 05:01:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:56,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:57,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:57,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:57,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:57,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:58,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:01,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:01,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 05:02:01,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:02:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 05:02:01,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:01,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 05:02:01,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:02,375 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:02:02,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:02,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:02,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:02,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:02,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 05:02:02,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:02,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:02:02,859 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 05:02:02,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228212036] [2020-10-27 05:02:02,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:02,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:02,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081179751] [2020-10-27 05:02:02,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:02,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:02,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:02,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:02,867 INFO L87 Difference]: Start difference. First operand 1720 states and 2633 transitions. Second operand 5 states. [2020-10-27 05:02:12,358 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:02:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:14,970 INFO L93 Difference]: Finished difference Result 5048 states and 7712 transitions. [2020-10-27 05:02:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:14,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-27 05:02:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:14,995 INFO L225 Difference]: With dead ends: 5048 [2020-10-27 05:02:14,995 INFO L226 Difference]: Without dead ends: 3381 [2020-10-27 05:02:15,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2020-10-27 05:02:15,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3299. [2020-10-27 05:02:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3299 states. [2020-10-27 05:02:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 5028 transitions. [2020-10-27 05:02:15,267 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 5028 transitions. Word has length 311 [2020-10-27 05:02:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:15,268 INFO L481 AbstractCegarLoop]: Abstraction has 3299 states and 5028 transitions. [2020-10-27 05:02:15,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 5028 transitions. [2020-10-27 05:02:15,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-27 05:02:15,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:15,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:15,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:02:15,282 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:15,282 INFO L82 PathProgramCache]: Analyzing trace with hash -505097166, now seen corresponding path program 1 times [2020-10-27 05:02:15,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:15,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912748497] [2020-10-27 05:02:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:15,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:16,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:16,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:16,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:16,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:17,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:17,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:20,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:20,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-27 05:02:20,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:02:20,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 05:02:20,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 05:02:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:02:21,367 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:02:21,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:21,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:21,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:21,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:21,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:21,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:02:21,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:21,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:21,589 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 05:02:21,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912748497] [2020-10-27 05:02:21,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:21,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:21,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987164203] [2020-10-27 05:02:21,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:21,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:21,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:21,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:21,593 INFO L87 Difference]: Start difference. First operand 3299 states and 5028 transitions. Second operand 5 states. [2020-10-27 05:02:30,172 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:02:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:32,528 INFO L93 Difference]: Finished difference Result 9601 states and 14570 transitions. [2020-10-27 05:02:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:32,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-27 05:02:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:32,560 INFO L225 Difference]: With dead ends: 9601 [2020-10-27 05:02:32,561 INFO L226 Difference]: Without dead ends: 6474 [2020-10-27 05:02:32,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2020-10-27 05:02:32,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 6385. [2020-10-27 05:02:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6385 states. [2020-10-27 05:02:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6385 states to 6385 states and 9666 transitions. [2020-10-27 05:02:32,993 INFO L78 Accepts]: Start accepts. Automaton has 6385 states and 9666 transitions. Word has length 313 [2020-10-27 05:02:32,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:32,994 INFO L481 AbstractCegarLoop]: Abstraction has 6385 states and 9666 transitions. [2020-10-27 05:02:32,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:32,994 INFO L276 IsEmpty]: Start isEmpty. Operand 6385 states and 9666 transitions. [2020-10-27 05:02:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-27 05:02:33,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:33,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:33,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:02:33,011 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:33,012 INFO L82 PathProgramCache]: Analyzing trace with hash 573383641, now seen corresponding path program 1 times [2020-10-27 05:02:33,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:33,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998238203] [2020-10-27 05:02:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:33,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:33,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:33,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:33,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:34,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:34,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:34,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:35,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:38,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 05:02:38,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:02:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 05:02:38,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 05:02:38,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:39,026 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:02:39,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:39,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:39,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:39,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:39,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:02:39,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:39,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:39,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:39,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:39,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:39,260 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 05:02:39,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998238203] [2020-10-27 05:02:39,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:39,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:39,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60374989] [2020-10-27 05:02:39,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:39,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:39,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:39,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:39,264 INFO L87 Difference]: Start difference. First operand 6385 states and 9666 transitions. Second operand 5 states. [2020-10-27 05:02:47,875 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:02:50,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:50,388 INFO L93 Difference]: Finished difference Result 18555 states and 27950 transitions. [2020-10-27 05:02:50,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:50,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-27 05:02:50,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:50,445 INFO L225 Difference]: With dead ends: 18555 [2020-10-27 05:02:50,445 INFO L226 Difference]: Without dead ends: 12418 [2020-10-27 05:02:50,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:50,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12418 states. [2020-10-27 05:02:51,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12418 to 12329. [2020-10-27 05:02:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12329 states. [2020-10-27 05:02:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12329 states to 12329 states and 18490 transitions. [2020-10-27 05:02:51,313 INFO L78 Accepts]: Start accepts. Automaton has 12329 states and 18490 transitions. Word has length 315 [2020-10-27 05:02:51,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:51,313 INFO L481 AbstractCegarLoop]: Abstraction has 12329 states and 18490 transitions. [2020-10-27 05:02:51,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:51,314 INFO L276 IsEmpty]: Start isEmpty. Operand 12329 states and 18490 transitions. [2020-10-27 05:02:51,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 05:02:51,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:51,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:51,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:02:51,345 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:51,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:51,345 INFO L82 PathProgramCache]: Analyzing trace with hash 687306329, now seen corresponding path program 1 times [2020-10-27 05:02:51,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:51,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346218200] [2020-10-27 05:02:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:51,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:51,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:51,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:53,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:53,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:55,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:56,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:56,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-27 05:02:56,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 05:02:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:02:56,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 05:02:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:57,375 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:02:57,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:57,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:57,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:57,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:02:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:57,551 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 05:02:57,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346218200] [2020-10-27 05:02:57,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:57,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:57,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763717498] [2020-10-27 05:02:57,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:57,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:57,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:57,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:57,553 INFO L87 Difference]: Start difference. First operand 12329 states and 18490 transitions. Second operand 5 states. [2020-10-27 05:03:06,843 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:03:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:09,427 INFO L93 Difference]: Finished difference Result 35903 states and 53632 transitions. [2020-10-27 05:03:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:09,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-27 05:03:09,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:09,505 INFO L225 Difference]: With dead ends: 35903 [2020-10-27 05:03:09,505 INFO L226 Difference]: Without dead ends: 23990 [2020-10-27 05:03:09,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:09,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23990 states. [2020-10-27 05:03:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23990 to 23901. [2020-10-27 05:03:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23901 states. [2020-10-27 05:03:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23901 states to 23901 states and 35536 transitions. [2020-10-27 05:03:10,876 INFO L78 Accepts]: Start accepts. Automaton has 23901 states and 35536 transitions. Word has length 317 [2020-10-27 05:03:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:10,876 INFO L481 AbstractCegarLoop]: Abstraction has 23901 states and 35536 transitions. [2020-10-27 05:03:10,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:10,876 INFO L276 IsEmpty]: Start isEmpty. Operand 23901 states and 35536 transitions. [2020-10-27 05:03:10,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 05:03:10,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:10,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:10,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:03:10,926 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:10,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:10,927 INFO L82 PathProgramCache]: Analyzing trace with hash -698562979, now seen corresponding path program 1 times [2020-10-27 05:03:10,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:10,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782452779] [2020-10-27 05:03:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:10,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:15,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:15,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 05:03:15,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:03:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:03:15,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 05:03:15,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:17,013 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:03:17,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:17,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:17,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:17,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:03:17,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:17,165 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 05:03:17,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782452779] [2020-10-27 05:03:17,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:17,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:17,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614034754] [2020-10-27 05:03:17,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:17,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:17,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:17,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:17,167 INFO L87 Difference]: Start difference. First operand 23901 states and 35536 transitions. Second operand 5 states. [2020-10-27 05:03:27,404 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:03:30,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:30,179 INFO L93 Difference]: Finished difference Result 69898 states and 103555 transitions. [2020-10-27 05:03:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:30,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-27 05:03:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:30,282 INFO L225 Difference]: With dead ends: 69898 [2020-10-27 05:03:30,282 INFO L226 Difference]: Without dead ends: 46593 [2020-10-27 05:03:30,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46593 states. [2020-10-27 05:03:32,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46593 to 46504. [2020-10-27 05:03:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46504 states. [2020-10-27 05:03:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46504 states to 46504 states and 68503 transitions. [2020-10-27 05:03:32,967 INFO L78 Accepts]: Start accepts. Automaton has 46504 states and 68503 transitions. Word has length 319 [2020-10-27 05:03:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:32,968 INFO L481 AbstractCegarLoop]: Abstraction has 46504 states and 68503 transitions. [2020-10-27 05:03:32,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 46504 states and 68503 transitions. [2020-10-27 05:03:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 05:03:33,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:33,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:33,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:03:33,037 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:33,037 INFO L82 PathProgramCache]: Analyzing trace with hash 79948534, now seen corresponding path program 1 times [2020-10-27 05:03:33,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:33,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130735939] [2020-10-27 05:03:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:33,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:38,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:38,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 05:03:38,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:03:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:03:38,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 05:03:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:39,021 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:03:39,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:39,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:39,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:39,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:39,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:03:39,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:03:39,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130735939] [2020-10-27 05:03:39,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:39,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:39,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096383161] [2020-10-27 05:03:39,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:39,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:39,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:39,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:39,176 INFO L87 Difference]: Start difference. First operand 46504 states and 68503 transitions. Second operand 5 states. [2020-10-27 05:03:51,162 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:03:54,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:54,808 INFO L93 Difference]: Finished difference Result 137438 states and 202059 transitions. [2020-10-27 05:03:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:54,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-27 05:03:54,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:54,929 INFO L225 Difference]: With dead ends: 137438 [2020-10-27 05:03:54,930 INFO L226 Difference]: Without dead ends: 91341 [2020-10-27 05:03:54,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:55,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91341 states. [2020-10-27 05:04:00,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91341 to 91252. [2020-10-27 05:04:00,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91252 states. [2020-10-27 05:04:00,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91252 states to 91252 states and 133435 transitions. [2020-10-27 05:04:00,647 INFO L78 Accepts]: Start accepts. Automaton has 91252 states and 133435 transitions. Word has length 321 [2020-10-27 05:04:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:00,650 INFO L481 AbstractCegarLoop]: Abstraction has 91252 states and 133435 transitions. [2020-10-27 05:04:00,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 91252 states and 133435 transitions. [2020-10-27 05:04:00,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-27 05:04:00,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:00,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:00,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:04:00,736 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:00,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:00,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2114658728, now seen corresponding path program 1 times [2020-10-27 05:04:00,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:00,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424699617] [2020-10-27 05:04:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:00,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:02,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:06,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:06,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-27 05:04:06,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:04:06,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 05:04:06,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-27 05:04:06,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:07,013 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:04:07,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:07,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:07,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:07,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:04:07,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:07,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:07,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:07,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:07,286 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 05:04:07,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424699617] [2020-10-27 05:04:07,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:07,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:07,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509776554] [2020-10-27 05:04:07,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:07,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:07,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:07,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:07,296 INFO L87 Difference]: Start difference. First operand 91252 states and 133435 transitions. Second operand 5 states. [2020-10-27 05:04:24,630 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:04:30,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:30,142 INFO L93 Difference]: Finished difference Result 270332 states and 394677 transitions. [2020-10-27 05:04:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:30,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-27 05:04:30,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:30,545 INFO L225 Difference]: With dead ends: 270332 [2020-10-27 05:04:30,545 INFO L226 Difference]: Without dead ends: 179535 [2020-10-27 05:04:30,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179535 states. [2020-10-27 05:04:42,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179535 to 179457. [2020-10-27 05:04:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179457 states. [2020-10-27 05:04:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179457 states to 179457 states and 260331 transitions. [2020-10-27 05:04:42,646 INFO L78 Accepts]: Start accepts. Automaton has 179457 states and 260331 transitions. Word has length 323 [2020-10-27 05:04:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:42,647 INFO L481 AbstractCegarLoop]: Abstraction has 179457 states and 260331 transitions. [2020-10-27 05:04:42,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 179457 states and 260331 transitions. [2020-10-27 05:04:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 05:04:43,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:43,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:43,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:04:43,123 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash -251200526, now seen corresponding path program 1 times [2020-10-27 05:04:43,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:43,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311382720] [2020-10-27 05:04:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:43,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:48,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:48,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 05:04:48,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:04:48,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 05:04:48,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:48,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 05:04:48,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:49,141 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:04:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:49,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:49,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:49,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:49,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:04:49,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:49,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:49,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:49,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:49,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:49,329 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 05:04:49,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311382720] [2020-10-27 05:04:49,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:49,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:49,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121136644] [2020-10-27 05:04:49,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:49,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:49,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:49,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:49,332 INFO L87 Difference]: Start difference. First operand 179457 states and 260331 transitions. Second operand 5 states.