/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:41:15,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:41:15,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:41:15,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:41:15,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:41:15,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:41:15,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:41:15,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:41:15,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:41:15,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:41:15,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:41:15,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:41:15,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:41:15,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:41:15,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:41:15,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:41:15,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:41:15,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:41:15,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:41:15,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:41:15,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:41:15,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:41:15,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:41:15,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:41:15,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:41:15,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:41:15,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:41:15,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:41:15,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:41:15,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:41:15,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:41:15,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:41:15,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:41:15,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:41:15,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:41:15,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:41:15,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:41:15,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:41:15,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:41:15,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:41:15,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:41:15,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:41:15,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:41:15,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:41:15,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:41:15,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:41:15,230 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:41:15,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:41:15,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:41:15,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:41:15,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:41:15,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:41:15,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:41:15,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:41:15,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:41:15,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:41:15,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:41:15,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:41:15,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:41:15,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:41:15,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:41:15,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:41:15,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:41:15,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:41:15,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:41:15,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:41:15,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:41:15,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:41:15,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:41:15,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:41:15,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:41:15,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:41:15,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:41:15,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:41:15,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:41:15,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:41:15,608 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:41:15,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-28 00:41:15,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/164766fdc/6014fbe0e80548cc9e06155ce4012a2c/FLAG7a1524cd3 [2020-10-28 00:41:16,550 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:41:16,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-28 00:41:16,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/164766fdc/6014fbe0e80548cc9e06155ce4012a2c/FLAG7a1524cd3 [2020-10-28 00:41:16,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/164766fdc/6014fbe0e80548cc9e06155ce4012a2c [2020-10-28 00:41:16,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:41:16,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:41:16,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:41:16,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:41:16,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:41:16,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:41:16" (1/1) ... [2020-10-28 00:41:16,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375f9694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:16, skipping insertion in model container [2020-10-28 00:41:16,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:41:16" (1/1) ... [2020-10-28 00:41:16,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:41:16,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:41:17,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:41:17,570 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:41:17,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:41:17,855 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:41:17,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:17 WrapperNode [2020-10-28 00:41:17,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:41:17,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:41:17,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:41:17,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:41:17,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:17" (1/1) ... [2020-10-28 00:41:17,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:17" (1/1) ... [2020-10-28 00:41:17,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:17" (1/1) ... [2020-10-28 00:41:17,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:17" (1/1) ... [2020-10-28 00:41:17,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:17" (1/1) ... [2020-10-28 00:41:17,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:17" (1/1) ... [2020-10-28 00:41:18,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:17" (1/1) ... [2020-10-28 00:41:18,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:41:18,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:41:18,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:41:18,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:41:18,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:41:18,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:41:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:41:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:41:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:41:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:41:18,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:41:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:41:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:41:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:41:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:41:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:41:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:41:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:41:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:41:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:41:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:41:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:41:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:41:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:41:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:41:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:41:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:41:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:41:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:41:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:41:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:41:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:41:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:41:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:41:21,274 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:41:21,274 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:41:21,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:41:21 BoogieIcfgContainer [2020-10-28 00:41:21,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:41:21,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:41:21,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:41:21,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:41:21,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:41:16" (1/3) ... [2020-10-28 00:41:21,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dc35c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:41:21, skipping insertion in model container [2020-10-28 00:41:21,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:17" (2/3) ... [2020-10-28 00:41:21,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dc35c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:41:21, skipping insertion in model container [2020-10-28 00:41:21,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:41:21" (3/3) ... [2020-10-28 00:41:21,287 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-28 00:41:21,300 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:41:21,306 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:41:21,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:41:21,353 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:41:21,353 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:41:21,353 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:41:21,353 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:41:21,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:41:21,354 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:41:21,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:41:21,354 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:41:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states. [2020-10-28 00:41:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-28 00:41:21,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:41:21,420 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] [2020-10-28 00:41:21,420 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:41:21,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:41:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash 48007832, now seen corresponding path program 1 times [2020-10-28 00:41:21,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:41:21,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200314769] [2020-10-28 00:41:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:41:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:41:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:23,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:27,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:41:27,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 00:41:27,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:41:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 00:41:27,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:41:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 00:41:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 00:41:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:41:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:41:29,339 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:41:29,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:41:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:41:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:29,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:41:29,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:41:29,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:41:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 00:41:29,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:41:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:41:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:41:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:41:29,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:41:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:41:29,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200314769] [2020-10-28 00:41:29,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:41:29,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 00:41:29,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090261088] [2020-10-28 00:41:29,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 00:41:29,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:41:29,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 00:41:29,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:41:29,592 INFO L87 Difference]: Start difference. First operand 779 states. Second operand 8 states. [2020-10-28 00:41:32,383 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification that was a NOOP. DAG size: 422 [2020-10-28 00:41:43,061 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:41:45,464 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-28 00:41:47,897 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-28 00:41:50,202 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:41:52,806 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 00:41:55,179 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-28 00:41:57,583 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-28 00:41:59,929 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:42:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:42:00,328 INFO L93 Difference]: Finished difference Result 3019 states and 5220 transitions. [2020-10-28 00:42:00,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 00:42:00,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-28 00:42:00,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:42:00,372 INFO L225 Difference]: With dead ends: 3019 [2020-10-28 00:42:00,372 INFO L226 Difference]: Without dead ends: 2752 [2020-10-28 00:42:00,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-28 00:42:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2020-10-28 00:42:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 989. [2020-10-28 00:42:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2020-10-28 00:42:00,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1716 transitions. [2020-10-28 00:42:00,543 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1716 transitions. Word has length 218 [2020-10-28 00:42:00,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:42:00,544 INFO L481 AbstractCegarLoop]: Abstraction has 989 states and 1716 transitions. [2020-10-28 00:42:00,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 00:42:00,545 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1716 transitions. [2020-10-28 00:42:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-28 00:42:00,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:42:00,550 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] [2020-10-28 00:42:00,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:42:00,551 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:42:00,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:42:00,552 INFO L82 PathProgramCache]: Analyzing trace with hash -706919784, now seen corresponding path program 1 times [2020-10-28 00:42:00,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:42:00,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606775472] [2020-10-28 00:42:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:42:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:42:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:00,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:02,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:02,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:02,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:05,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:42:05,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-28 00:42:05,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:42:05,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5174 [2020-10-28 00:42:05,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:42:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:42:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-28 00:42:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:42:05,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:42:08,383 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:42:08,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:42:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:42:08,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:08,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:42:08,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:42:08,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:42:08,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 00:42:08,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:42:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:42:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:42:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:42:08,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:42:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:42:08,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606775472] [2020-10-28 00:42:08,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:42:08,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:42:08,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944310406] [2020-10-28 00:42:08,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:42:08,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:42:08,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:42:08,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:42:08,573 INFO L87 Difference]: Start difference. First operand 989 states and 1716 transitions. Second operand 9 states. [2020-10-28 00:42:11,107 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-28 00:42:20,818 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-28 00:42:23,176 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:42:25,556 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-28 00:42:28,066 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-28 00:42:30,360 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:42:32,968 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification that was a NOOP. DAG size: 423 [2020-10-28 00:42:35,327 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 419 [2020-10-28 00:42:37,753 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-28 00:42:40,194 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 417 [2020-10-28 00:42:43,591 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-28 00:42:46,035 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 423 [2020-10-28 00:42:48,512 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 419 [2020-10-28 00:42:52,268 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-28 00:42:54,757 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-28 00:42:57,157 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:42:57,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:42:57,206 INFO L93 Difference]: Finished difference Result 7167 states and 12190 transitions. [2020-10-28 00:42:57,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 00:42:57,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2020-10-28 00:42:57,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:42:57,242 INFO L225 Difference]: With dead ends: 7167 [2020-10-28 00:42:57,242 INFO L226 Difference]: Without dead ends: 6730 [2020-10-28 00:42:57,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=411, Invalid=1149, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 00:42:57,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6730 states. [2020-10-28 00:42:57,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6730 to 2206. [2020-10-28 00:42:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2206 states. [2020-10-28 00:42:57,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3783 transitions. [2020-10-28 00:42:57,462 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3783 transitions. Word has length 219 [2020-10-28 00:42:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:42:57,463 INFO L481 AbstractCegarLoop]: Abstraction has 2206 states and 3783 transitions. [2020-10-28 00:42:57,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:42:57,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3783 transitions. [2020-10-28 00:42:57,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-28 00:42:57,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:42:57,469 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] [2020-10-28 00:42:57,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:42:57,469 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:42:57,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:42:57,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1801426609, now seen corresponding path program 1 times [2020-10-28 00:42:57,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:42:57,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442770800] [2020-10-28 00:42:57,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:42:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:42:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:58,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:58,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:02,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:02,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-28 00:43:02,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:43:02,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 00:43:02,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:43:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-28 00:43:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:43:02,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:43:04,928 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:43:04,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:43:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:04,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:04,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:04,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:43:04,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:43:04,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 00:43:04,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:43:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:43:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:43:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:43:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:43:05,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442770800] [2020-10-28 00:43:05,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:43:05,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:43:05,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451569190] [2020-10-28 00:43:05,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:43:05,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:43:05,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:43:05,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:43:05,068 INFO L87 Difference]: Start difference. First operand 2206 states and 3783 transitions. Second operand 5 states. [2020-10-28 00:43:07,497 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:43:16,311 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:43:16,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:43:16,582 INFO L93 Difference]: Finished difference Result 6746 states and 11495 transitions. [2020-10-28 00:43:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:43:16,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-28 00:43:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:43:16,613 INFO L225 Difference]: With dead ends: 6746 [2020-10-28 00:43:16,613 INFO L226 Difference]: Without dead ends: 5264 [2020-10-28 00:43:16,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:43:16,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2020-10-28 00:43:16,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 3772. [2020-10-28 00:43:16,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3772 states. [2020-10-28 00:43:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 6441 transitions. [2020-10-28 00:43:16,914 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 6441 transitions. Word has length 220 [2020-10-28 00:43:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:43:16,915 INFO L481 AbstractCegarLoop]: Abstraction has 3772 states and 6441 transitions. [2020-10-28 00:43:16,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:43:16,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 6441 transitions. [2020-10-28 00:43:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-28 00:43:16,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:43:16,922 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] [2020-10-28 00:43:16,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:43:16,922 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:43:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:43:16,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1902915119, now seen corresponding path program 1 times [2020-10-28 00:43:16,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:43:16,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515103290] [2020-10-28 00:43:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:43:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:17,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:18,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:18,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:22,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:22,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-28 00:43:22,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:43:22,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 00:43:22,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:22,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:43:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-28 00:43:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:43:22,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:43:24,480 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:43:24,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:43:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:24,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:24,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:43:24,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:43:24,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:43:24,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:43:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:43:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:43:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:43:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:43:24,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515103290] [2020-10-28 00:43:24,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:43:24,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:43:24,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649720980] [2020-10-28 00:43:24,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:43:24,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:43:24,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:43:24,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:43:24,600 INFO L87 Difference]: Start difference. First operand 3772 states and 6441 transitions. Second operand 5 states. [2020-10-28 00:43:26,997 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:43:35,977 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:43:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:43:36,393 INFO L93 Difference]: Finished difference Result 12742 states and 21669 transitions. [2020-10-28 00:43:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:43:36,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-28 00:43:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:43:36,442 INFO L225 Difference]: With dead ends: 12742 [2020-10-28 00:43:36,442 INFO L226 Difference]: Without dead ends: 9788 [2020-10-28 00:43:36,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:43:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9788 states. [2020-10-28 00:43:36,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9788 to 6817. [2020-10-28 00:43:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6817 states. [2020-10-28 00:43:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6817 states to 6817 states and 11603 transitions. [2020-10-28 00:43:37,004 INFO L78 Accepts]: Start accepts. Automaton has 6817 states and 11603 transitions. Word has length 221 [2020-10-28 00:43:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:43:37,005 INFO L481 AbstractCegarLoop]: Abstraction has 6817 states and 11603 transitions. [2020-10-28 00:43:37,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:43:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6817 states and 11603 transitions. [2020-10-28 00:43:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-28 00:43:37,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:43:37,012 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] [2020-10-28 00:43:37,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:43:37,012 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:43:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:43:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash -632092982, now seen corresponding path program 1 times [2020-10-28 00:43:37,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:43:37,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279259365] [2020-10-28 00:43:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:43:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:38,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:42,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:42,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-28 00:43:42,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:43:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:43:42,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:43:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-28 00:43:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:43:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:43:44,509 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:43:44,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:43:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:44,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:44,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:44,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:43:44,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:43:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 00:43:44,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:43:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:43:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:43:44,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:43:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:43:44,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279259365] [2020-10-28 00:43:44,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:43:44,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:43:44,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494239111] [2020-10-28 00:43:44,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:43:44,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:43:44,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:43:44,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:43:44,715 INFO L87 Difference]: Start difference. First operand 6817 states and 11603 transitions. Second operand 5 states. [2020-10-28 00:43:47,181 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:43:56,048 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:43:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:43:56,877 INFO L93 Difference]: Finished difference Result 24546 states and 41673 transitions. [2020-10-28 00:43:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:43:56,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-28 00:43:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:43:56,925 INFO L225 Difference]: With dead ends: 24546 [2020-10-28 00:43:56,925 INFO L226 Difference]: Without dead ends: 18655 [2020-10-28 00:43:56,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:43:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18655 states. [2020-10-28 00:43:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18655 to 12733. [2020-10-28 00:43:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12733 states. [2020-10-28 00:43:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12733 states to 12733 states and 21619 transitions. [2020-10-28 00:43:57,950 INFO L78 Accepts]: Start accepts. Automaton has 12733 states and 21619 transitions. Word has length 222 [2020-10-28 00:43:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:43:57,950 INFO L481 AbstractCegarLoop]: Abstraction has 12733 states and 21619 transitions. [2020-10-28 00:43:57,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:43:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 12733 states and 21619 transitions. [2020-10-28 00:43:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-28 00:43:57,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:43:57,958 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] [2020-10-28 00:43:57,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:43:57,958 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:43:57,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:43:57,959 INFO L82 PathProgramCache]: Analyzing trace with hash 249986314, now seen corresponding path program 1 times [2020-10-28 00:43:57,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:43:57,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522481075] [2020-10-28 00:43:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:43:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:58,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:58,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:59,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:03,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:44:03,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 00:44:03,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:44:03,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:44:03,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:44:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:44:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-28 00:44:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:44:03,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:44:05,348 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:44:05,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:44:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:44:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:05,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:44:05,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:44:05,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:44:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:44:05,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:44:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:44:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:44:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:44:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:44:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:44:05,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522481075] [2020-10-28 00:44:05,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:44:05,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:44:05,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539116741] [2020-10-28 00:44:05,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:44:05,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:44:05,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:44:05,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:44:05,477 INFO L87 Difference]: Start difference. First operand 12733 states and 21619 transitions. Second operand 5 states. [2020-10-28 00:44:07,969 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:44:16,906 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:44:18,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:44:18,533 INFO L93 Difference]: Finished difference Result 47986 states and 81337 transitions. [2020-10-28 00:44:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:44:18,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-28 00:44:18,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:44:18,733 INFO L225 Difference]: With dead ends: 47986 [2020-10-28 00:44:18,733 INFO L226 Difference]: Without dead ends: 36235 [2020-10-28 00:44:18,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:44:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36235 states. [2020-10-28 00:44:20,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36235 to 24425. [2020-10-28 00:44:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24425 states. [2020-10-28 00:44:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24425 states to 24425 states and 41379 transitions. [2020-10-28 00:44:20,505 INFO L78 Accepts]: Start accepts. Automaton has 24425 states and 41379 transitions. Word has length 223 [2020-10-28 00:44:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:44:20,506 INFO L481 AbstractCegarLoop]: Abstraction has 24425 states and 41379 transitions. [2020-10-28 00:44:20,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:44:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 24425 states and 41379 transitions. [2020-10-28 00:44:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 00:44:20,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:44:20,514 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] [2020-10-28 00:44:20,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:44:20,514 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:44:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:44:20,515 INFO L82 PathProgramCache]: Analyzing trace with hash 792853961, now seen corresponding path program 1 times [2020-10-28 00:44:20,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:44:20,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611782379] [2020-10-28 00:44:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:44:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:44:20,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:20,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:22,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:22,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:25,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:44:25,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-28 00:44:25,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:44:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-28 00:44:25,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:44:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:44:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-28 00:44:25,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 00:44:25,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:44:28,088 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:44:28,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:44:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:44:28,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:28,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:44:28,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:44:28,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:44:28,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 00:44:28,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:44:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:44:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:44:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:44:28,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:44:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:44:28,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611782379] [2020-10-28 00:44:28,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:44:28,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:44:28,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158159180] [2020-10-28 00:44:28,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:44:28,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:44:28,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:44:28,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:44:28,233 INFO L87 Difference]: Start difference. First operand 24425 states and 41379 transitions. Second operand 4 states. [2020-10-28 00:44:30,673 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:44:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:44:41,435 INFO L93 Difference]: Finished difference Result 67494 states and 114202 transitions. [2020-10-28 00:44:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:44:41,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2020-10-28 00:44:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:44:41,519 INFO L225 Difference]: With dead ends: 67494 [2020-10-28 00:44:41,519 INFO L226 Difference]: Without dead ends: 43649 [2020-10-28 00:44:41,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:44:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43649 states. [2020-10-28 00:44:44,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43649 to 43646. [2020-10-28 00:44:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43646 states. [2020-10-28 00:44:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43646 states to 43646 states and 73726 transitions. [2020-10-28 00:44:44,483 INFO L78 Accepts]: Start accepts. Automaton has 43646 states and 73726 transitions. Word has length 224 [2020-10-28 00:44:44,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:44:44,484 INFO L481 AbstractCegarLoop]: Abstraction has 43646 states and 73726 transitions. [2020-10-28 00:44:44,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:44:44,484 INFO L276 IsEmpty]: Start isEmpty. Operand 43646 states and 73726 transitions. [2020-10-28 00:44:44,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 00:44:44,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:44:44,488 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] [2020-10-28 00:44:44,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:44:44,488 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:44:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:44:44,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1898014237, now seen corresponding path program 1 times [2020-10-28 00:44:44,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:44:44,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955545393] [2020-10-28 00:44:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:44:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:44:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:45,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:48,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:49,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:44:49,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-28 00:44:49,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:44:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:44:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:44:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:44:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-28 00:44:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 00:44:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:44:51,865 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:44:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:44:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:44:51,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:51,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:44:51,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:44:51,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:44:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 00:44:51,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:44:51,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:44:51,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:44:51,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:44:51,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:44:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:44:51,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955545393] [2020-10-28 00:44:51,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:44:51,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:44:51,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018538696] [2020-10-28 00:44:51,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:44:51,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:44:51,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:44:51,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:44:51,969 INFO L87 Difference]: Start difference. First operand 43646 states and 73726 transitions. Second operand 4 states. [2020-10-28 00:44:54,357 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 416