/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:14:37,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:14:37,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:14:37,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:14:37,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:14:37,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:14:37,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:14:37,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:14:37,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:14:37,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:14:37,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:14:37,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:14:37,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:14:37,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:14:37,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:14:37,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:14:37,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:14:37,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:14:37,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:14:37,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:14:37,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:14:37,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:14:37,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:14:37,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:14:37,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:14:37,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:14:37,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:14:37,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:14:37,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:14:37,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:14:37,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:14:37,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:14:37,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:14:37,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:14:37,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:14:37,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:14:37,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:14:37,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:14:37,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:14:37,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:14:37,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:14:37,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:14:37,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:14:37,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:14:37,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:14:37,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:14:37,754 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:14:37,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:14:37,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:14:37,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:14:37,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:14:37,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:14:37,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:14:37,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:14:37,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:14:37,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:14:37,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:14:37,758 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:14:37,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:14:37,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:14:37,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:14:37,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:14:37,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:14:37,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:14:37,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:14:37,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:14:37,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:14:37,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:14:37,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:14:37,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:14:37,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:14:37,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:14:38,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:14:38,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:14:38,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:14:38,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:14:38,247 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:14:38,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-28 18:14:38,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d05afbf6/574aae39a31d4444b48683ff0feb4f4f/FLAG2906d18d2 [2020-10-28 18:14:39,040 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:14:39,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-28 18:14:39,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d05afbf6/574aae39a31d4444b48683ff0feb4f4f/FLAG2906d18d2 [2020-10-28 18:14:39,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d05afbf6/574aae39a31d4444b48683ff0feb4f4f [2020-10-28 18:14:39,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:14:39,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:14:39,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:14:39,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:14:39,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:14:39,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:14:39" (1/1) ... [2020-10-28 18:14:39,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4a2634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:39, skipping insertion in model container [2020-10-28 18:14:39,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:14:39" (1/1) ... [2020-10-28 18:14:39,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:14:39,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:14:40,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:14:40,309 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:14:40,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:14:40,751 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:14:40,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:40 WrapperNode [2020-10-28 18:14:40,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:14:40,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:14:40,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:14:40,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:14:40,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:40" (1/1) ... [2020-10-28 18:14:40,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:40" (1/1) ... [2020-10-28 18:14:40,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:40" (1/1) ... [2020-10-28 18:14:40,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:40" (1/1) ... [2020-10-28 18:14:40,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:40" (1/1) ... [2020-10-28 18:14:40,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:40" (1/1) ... [2020-10-28 18:14:40,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:40" (1/1) ... [2020-10-28 18:14:40,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:14:40,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:14:40,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:14:40,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:14:40,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:14:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:14:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:14:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:14:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:14:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:14:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:14:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:14:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:14:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:14:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:14:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:14:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:14:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:14:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:14:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:14:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:14:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:14:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:14:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:14:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:14:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:14:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:14:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:14:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:14:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:14:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:14:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:14:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:14:44,027 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:14:44,027 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:14:44,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:14:44 BoogieIcfgContainer [2020-10-28 18:14:44,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:14:44,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:14:44,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:14:44,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:14:44,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:14:39" (1/3) ... [2020-10-28 18:14:44,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f4f226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:14:44, skipping insertion in model container [2020-10-28 18:14:44,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:40" (2/3) ... [2020-10-28 18:14:44,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f4f226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:14:44, skipping insertion in model container [2020-10-28 18:14:44,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:14:44" (3/3) ... [2020-10-28 18:14:44,040 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-28 18:14:44,052 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:14:44,058 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:14:44,072 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:14:44,106 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:14:44,106 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:14:44,106 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:14:44,106 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:14:44,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:14:44,107 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:14:44,107 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:14:44,107 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:14:44,138 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states. [2020-10-28 18:14:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-28 18:14:44,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:44,166 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] [2020-10-28 18:14:44,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:44,174 INFO L82 PathProgramCache]: Analyzing trace with hash -308476268, now seen corresponding path program 1 times [2020-10-28 18:14:44,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:44,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522376943] [2020-10-28 18:14:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:45,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:47,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:48,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:48,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:50,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:50,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-28 18:14:50,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:14:50,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:14:50,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:50,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:50,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 18:14:50,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:14:51,425 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:14:51,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:51,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:51,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:51,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:51,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:14:51,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:51,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:51,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:51,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522376943] [2020-10-28 18:14:51,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:51,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:51,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875314116] [2020-10-28 18:14:51,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:51,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:51,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:51,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:51,755 INFO L87 Difference]: Start difference. First operand 716 states. Second operand 5 states. [2020-10-28 18:14:59,079 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 18:15:00,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:00,620 INFO L93 Difference]: Finished difference Result 2089 states and 3712 transitions. [2020-10-28 18:15:00,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:15:00,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2020-10-28 18:15:00,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:00,653 INFO L225 Difference]: With dead ends: 2089 [2020-10-28 18:15:00,653 INFO L226 Difference]: Without dead ends: 1382 [2020-10-28 18:15:00,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:00,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-10-28 18:15:00,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1379. [2020-10-28 18:15:00,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-28 18:15:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2142 transitions. [2020-10-28 18:15:00,861 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2142 transitions. Word has length 297 [2020-10-28 18:15:00,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:00,862 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 2142 transitions. [2020-10-28 18:15:00,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:00,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2142 transitions. [2020-10-28 18:15:00,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-28 18:15:00,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:00,873 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] [2020-10-28 18:15:00,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:15:00,873 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:00,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:00,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1185951708, now seen corresponding path program 1 times [2020-10-28 18:15:00,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:00,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240782574] [2020-10-28 18:15:00,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:02,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:03,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:03,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:04,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:05,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-28 18:15:05,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:15:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 18:15:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:05,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:15:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 18:15:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:15:06,695 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:15:06,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:06,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:06,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:06,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:06,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:06,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 18:15:06,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:06,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:15:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:07,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240782574] [2020-10-28 18:15:07,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:07,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:07,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521719949] [2020-10-28 18:15:07,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:07,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:07,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:07,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:07,016 INFO L87 Difference]: Start difference. First operand 1379 states and 2142 transitions. Second operand 5 states. [2020-10-28 18:15:13,846 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 18:15:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:15,567 INFO L93 Difference]: Finished difference Result 3994 states and 6186 transitions. [2020-10-28 18:15:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:15:15,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-28 18:15:15,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:15,584 INFO L225 Difference]: With dead ends: 3994 [2020-10-28 18:15:15,585 INFO L226 Difference]: Without dead ends: 2701 [2020-10-28 18:15:15,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:15,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2020-10-28 18:15:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2698. [2020-10-28 18:15:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2698 states. [2020-10-28 18:15:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4167 transitions. [2020-10-28 18:15:15,759 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4167 transitions. Word has length 299 [2020-10-28 18:15:15,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:15,760 INFO L481 AbstractCegarLoop]: Abstraction has 2698 states and 4167 transitions. [2020-10-28 18:15:15,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4167 transitions. [2020-10-28 18:15:15,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-28 18:15:15,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:15,770 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] [2020-10-28 18:15:15,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:15:15,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:15,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1645464329, now seen corresponding path program 1 times [2020-10-28 18:15:15,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:15,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636437397] [2020-10-28 18:15:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:15,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:16,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:16,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:16,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:16,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:17,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:17,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:18,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:18,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:20,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:20,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-28 18:15:20,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:15:20,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:15:20,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:20,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:15:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 18:15:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:21,496 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:15:21,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:21,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:21,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:21,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 18:15:21,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:21,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:21,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636437397] [2020-10-28 18:15:21,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:21,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:21,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609367636] [2020-10-28 18:15:21,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:21,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:21,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:21,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:21,834 INFO L87 Difference]: Start difference. First operand 2698 states and 4167 transitions. Second operand 5 states. [2020-10-28 18:15:28,235 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 18:15:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:29,907 INFO L93 Difference]: Finished difference Result 7728 states and 11877 transitions. [2020-10-28 18:15:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:15:29,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2020-10-28 18:15:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:29,936 INFO L225 Difference]: With dead ends: 7728 [2020-10-28 18:15:29,936 INFO L226 Difference]: Without dead ends: 5241 [2020-10-28 18:15:29,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5241 states. [2020-10-28 18:15:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5241 to 5238. [2020-10-28 18:15:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5238 states. [2020-10-28 18:15:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5238 states to 5238 states and 8035 transitions. [2020-10-28 18:15:30,359 INFO L78 Accepts]: Start accepts. Automaton has 5238 states and 8035 transitions. Word has length 301 [2020-10-28 18:15:30,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:30,360 INFO L481 AbstractCegarLoop]: Abstraction has 5238 states and 8035 transitions. [2020-10-28 18:15:30,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5238 states and 8035 transitions. [2020-10-28 18:15:30,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-28 18:15:30,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:30,373 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] [2020-10-28 18:15:30,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:15:30,374 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:30,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:30,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1508472859, now seen corresponding path program 1 times [2020-10-28 18:15:30,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:30,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135780479] [2020-10-28 18:15:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:30,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:30,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:30,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:35,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:35,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-28 18:15:35,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:15:35,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:15:35,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:35,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:15:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 18:15:35,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:15:36,091 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:15:36,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:36,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:36,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:36,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:36,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:15:36,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:36,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:36,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:36,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:36,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135780479] [2020-10-28 18:15:36,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:36,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:36,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406778284] [2020-10-28 18:15:36,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:36,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:36,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:36,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:36,359 INFO L87 Difference]: Start difference. First operand 5238 states and 8035 transitions. Second operand 5 states. [2020-10-28 18:15:42,832 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 18:15:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:44,591 INFO L93 Difference]: Finished difference Result 15510 states and 23781 transitions. [2020-10-28 18:15:44,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:15:44,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-28 18:15:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:44,643 INFO L225 Difference]: With dead ends: 15510 [2020-10-28 18:15:44,643 INFO L226 Difference]: Without dead ends: 10290 [2020-10-28 18:15:44,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:44,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2020-10-28 18:15:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 10287. [2020-10-28 18:15:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10287 states. [2020-10-28 18:15:45,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10287 states to 10287 states and 15671 transitions. [2020-10-28 18:15:45,445 INFO L78 Accepts]: Start accepts. Automaton has 10287 states and 15671 transitions. Word has length 303 [2020-10-28 18:15:45,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:45,446 INFO L481 AbstractCegarLoop]: Abstraction has 10287 states and 15671 transitions. [2020-10-28 18:15:45,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:45,446 INFO L276 IsEmpty]: Start isEmpty. Operand 10287 states and 15671 transitions. [2020-10-28 18:15:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-28 18:15:45,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:45,475 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] [2020-10-28 18:15:45,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:15:45,475 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:45,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1365321400, now seen corresponding path program 1 times [2020-10-28 18:15:45,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:45,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015869775] [2020-10-28 18:15:45,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:49,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:50,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:50,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:50,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:50,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-28 18:15:50,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:15:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:15:50,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:50,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:15:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 18:15:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:51,214 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:15:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:51,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:51,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:15:51,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:51,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:51,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015869775] [2020-10-28 18:15:51,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:51,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:51,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551155250] [2020-10-28 18:15:51,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:51,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:51,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:51,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:51,535 INFO L87 Difference]: Start difference. First operand 10287 states and 15671 transitions. Second operand 5 states. [2020-10-28 18:15:58,776 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 18:16:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:00,833 INFO L93 Difference]: Finished difference Result 30005 states and 45587 transitions. [2020-10-28 18:16:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:16:00,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-28 18:16:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:00,902 INFO L225 Difference]: With dead ends: 30005 [2020-10-28 18:16:00,902 INFO L226 Difference]: Without dead ends: 20082 [2020-10-28 18:16:00,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:16:00,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20082 states. [2020-10-28 18:16:02,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20082 to 20079. [2020-10-28 18:16:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20079 states. [2020-10-28 18:16:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20079 states to 20079 states and 30351 transitions. [2020-10-28 18:16:02,691 INFO L78 Accepts]: Start accepts. Automaton has 20079 states and 30351 transitions. Word has length 305 [2020-10-28 18:16:02,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:02,691 INFO L481 AbstractCegarLoop]: Abstraction has 20079 states and 30351 transitions. [2020-10-28 18:16:02,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:02,691 INFO L276 IsEmpty]: Start isEmpty. Operand 20079 states and 30351 transitions. [2020-10-28 18:16:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-28 18:16:02,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:02,736 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] [2020-10-28 18:16:02,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:16:02,737 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:02,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:02,737 INFO L82 PathProgramCache]: Analyzing trace with hash 674977329, now seen corresponding path program 1 times [2020-10-28 18:16:02,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:02,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098893938] [2020-10-28 18:16:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:02,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:02,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:05,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:06,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:07,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:07,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:07,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-28 18:16:07,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 18:16:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:16:07,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:07,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:16:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:16:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 18:16:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:08,420 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:16:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:08,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:08,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:08,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:08,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:08,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:16:08,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:08,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:08,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:08,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098893938] [2020-10-28 18:16:08,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:08,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:08,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736331900] [2020-10-28 18:16:08,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:16:08,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:08,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:16:08,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:16:08,551 INFO L87 Difference]: Start difference. First operand 20079 states and 30351 transitions. Second operand 5 states. [2020-10-28 18:16:16,588 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 18:16:18,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:18,819 INFO L93 Difference]: Finished difference Result 58265 states and 87691 transitions. [2020-10-28 18:16:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:16:18,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-28 18:16:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:18,919 INFO L225 Difference]: With dead ends: 58265 [2020-10-28 18:16:18,919 INFO L226 Difference]: Without dead ends: 39122 [2020-10-28 18:16:18,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:16:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39122 states. [2020-10-28 18:16:21,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39122 to 39119. [2020-10-28 18:16:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39119 states. [2020-10-28 18:16:21,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39119 states to 39119 states and 58549 transitions. [2020-10-28 18:16:21,669 INFO L78 Accepts]: Start accepts. Automaton has 39119 states and 58549 transitions. Word has length 307 [2020-10-28 18:16:21,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:21,669 INFO L481 AbstractCegarLoop]: Abstraction has 39119 states and 58549 transitions. [2020-10-28 18:16:21,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand 39119 states and 58549 transitions. [2020-10-28 18:16:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-28 18:16:21,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:21,754 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] [2020-10-28 18:16:21,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:16:21,754 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:21,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:21,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1235769431, now seen corresponding path program 1 times [2020-10-28 18:16:21,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:21,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779573452] [2020-10-28 18:16:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:21,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:21,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:26,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:26,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 18:16:26,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:16:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 18:16:26,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:26,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:16:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:16:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 18:16:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:27,436 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:16:27,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:27,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:27,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:27,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:27,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:16:27,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:27,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:27,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:27,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:27,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:27,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:27,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779573452] [2020-10-28 18:16:27,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:27,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:27,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445536064] [2020-10-28 18:16:27,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:16:27,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:27,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:16:27,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:16:27,651 INFO L87 Difference]: Start difference. First operand 39119 states and 58549 transitions. Second operand 5 states. [2020-10-28 18:16:38,244 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 18:16:41,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:41,286 INFO L93 Difference]: Finished difference Result 112912 states and 168095 transitions. [2020-10-28 18:16:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:16:41,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-28 18:16:41,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:41,460 INFO L225 Difference]: With dead ends: 112912 [2020-10-28 18:16:41,460 INFO L226 Difference]: Without dead ends: 76095 [2020-10-28 18:16:41,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:16:41,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76095 states. [2020-10-28 18:16:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76095 to 76092. [2020-10-28 18:16:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76092 states. [2020-10-28 18:16:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76092 states to 76092 states and 112860 transitions. [2020-10-28 18:16:47,774 INFO L78 Accepts]: Start accepts. Automaton has 76092 states and 112860 transitions. Word has length 309 [2020-10-28 18:16:47,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:47,774 INFO L481 AbstractCegarLoop]: Abstraction has 76092 states and 112860 transitions. [2020-10-28 18:16:47,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 76092 states and 112860 transitions. [2020-10-28 18:16:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-28 18:16:47,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:47,841 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] [2020-10-28 18:16:47,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:16:47,841 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:47,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2144571930, now seen corresponding path program 1 times [2020-10-28 18:16:47,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:47,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530318523] [2020-10-28 18:16:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:47,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:52,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:52,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 18:16:52,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:16:52,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:16:52,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:52,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:16:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:16:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 18:16:52,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:53,534 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:16:53,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:53,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:53,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:53,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:53,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:16:53,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:53,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:53,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:53,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530318523] [2020-10-28 18:16:53,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:53,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:53,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713053161] [2020-10-28 18:16:53,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:16:53,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:53,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:16:53,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:16:53,722 INFO L87 Difference]: Start difference. First operand 76092 states and 112860 transitions. Second operand 5 states. [2020-10-28 18:17:08,983 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 18:17:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:17:13,918 INFO L93 Difference]: Finished difference Result 222946 states and 329730 transitions. [2020-10-28 18:17:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:17:13,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-28 18:17:13,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:17:14,391 INFO L225 Difference]: With dead ends: 222946 [2020-10-28 18:17:14,391 INFO L226 Difference]: Without dead ends: 148563 [2020-10-28 18:17:14,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:17:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148563 states. [2020-10-28 18:17:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148563 to 148560. [2020-10-28 18:17:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148560 states. [2020-10-28 18:17:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148560 states to 148560 states and 218506 transitions. [2020-10-28 18:17:27,326 INFO L78 Accepts]: Start accepts. Automaton has 148560 states and 218506 transitions. Word has length 311 [2020-10-28 18:17:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:17:27,326 INFO L481 AbstractCegarLoop]: Abstraction has 148560 states and 218506 transitions. [2020-10-28 18:17:27,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:17:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 148560 states and 218506 transitions. [2020-10-28 18:17:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-28 18:17:27,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:17:27,471 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] [2020-10-28 18:17:27,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:17:27,471 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:17:27,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:17:27,472 INFO L82 PathProgramCache]: Analyzing trace with hash -646717830, now seen corresponding path program 1 times [2020-10-28 18:17:27,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:17:27,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45366400] [2020-10-28 18:17:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:17:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:17:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:27,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:27,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:17:32,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-28 18:17:32,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:17:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:17:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:17:32,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:17:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:17:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:17:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 18:17:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:33,176 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:17:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:17:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:17:33,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:33,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:17:33,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:17:33,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:17:33,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:17:33,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:17:33,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:17:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:17:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:17:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:17:33,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:17:33,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45366400] [2020-10-28 18:17:33,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:17:33,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:17:33,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746426470] [2020-10-28 18:17:33,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:17:33,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:17:33,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:17:33,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:17:33,358 INFO L87 Difference]: Start difference. First operand 148560 states and 218506 transitions. Second operand 5 states. [2020-10-28 18:17:59,491 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 18:18:07,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:18:07,702 INFO L93 Difference]: Finished difference Result 430407 states and 629953 transitions. [2020-10-28 18:18:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:18:07,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-28 18:18:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:18:08,498 INFO L225 Difference]: With dead ends: 430407 [2020-10-28 18:18:08,498 INFO L226 Difference]: Without dead ends: 290116 [2020-10-28 18:18:08,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:18:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290116 states.