/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:05:58,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:05:58,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:05:58,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:05:58,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:05:58,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:05:58,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:05:58,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:05:58,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:05:58,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:05:58,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:05:58,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:05:58,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:05:58,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:05:58,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:05:58,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:05:58,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:05:58,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:05:58,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:05:58,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:05:58,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:05:58,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:05:58,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:05:58,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:05:58,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:05:58,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:05:58,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:05:58,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:05:58,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:05:58,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:05:58,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:05:58,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:05:58,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:05:58,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:05:58,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:05:58,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:05:58,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:05:58,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:05:58,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:05:58,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:05:58,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:05:58,765 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 [2020-10-29 13:05:58,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:05:58,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:05:58,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:05:58,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:05:58,797 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:05:58,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:05:58,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:05:58,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:05:58,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:05:58,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:05:58,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:05:58,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:05:58,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:05:58,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:05:58,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:05:58,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:05:58,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:05:58,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:05:58,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:05:58,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:05:58,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:05:58,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:05:58,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:05:58,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:05:58,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:05:58,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:05:58,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:05:58,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:05:58,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:05:58,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:05:59,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:05:59,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:05:59,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:05:59,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:05:59,196 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:05:59,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:05:59,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f39e2d6c5/c771f1a067064d6c81fbaa9f81d0c41e/FLAGc3b1b8b5d [2020-10-29 13:06:00,124 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:06:00,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:06:00,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f39e2d6c5/c771f1a067064d6c81fbaa9f81d0c41e/FLAGc3b1b8b5d [2020-10-29 13:06:00,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f39e2d6c5/c771f1a067064d6c81fbaa9f81d0c41e [2020-10-29 13:06:00,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:06:00,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:06:00,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:06:00,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:06:00,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:06:00,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:06:00" (1/1) ... [2020-10-29 13:06:00,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef3ab0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:00, skipping insertion in model container [2020-10-29 13:06:00,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:06:00" (1/1) ... [2020-10-29 13:06:00,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:06:00,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:06:02,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:06:02,075 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:06:02,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:06:02,882 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:06:02,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:02 WrapperNode [2020-10-29 13:06:02,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:06:02,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:06:02,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:06:02,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:06:02,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:02" (1/1) ... [2020-10-29 13:06:02,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:02" (1/1) ... [2020-10-29 13:06:02,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:02" (1/1) ... [2020-10-29 13:06:02,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:02" (1/1) ... [2020-10-29 13:06:03,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:02" (1/1) ... [2020-10-29 13:06:03,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:02" (1/1) ... [2020-10-29 13:06:03,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:02" (1/1) ... [2020-10-29 13:06:03,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:06:03,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:06:03,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:06:03,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:06:03,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:02" (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 [2020-10-29 13:06:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:06:03,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:06:03,226 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:06:03,226 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:06:03,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:06:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:06:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:06:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:06:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:06:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:06:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:06:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:06:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:06:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:06:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:06:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:06:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:06:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:06:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:06:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:06:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:06:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:06:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:06:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:06:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:06:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:06:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:06:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:06:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:06:06,796 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:06:06,796 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:06:06,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:06:06 BoogieIcfgContainer [2020-10-29 13:06:06,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:06:06,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:06:06,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:06:06,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:06:06,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:06:00" (1/3) ... [2020-10-29 13:06:06,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1181dd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:06:06, skipping insertion in model container [2020-10-29 13:06:06,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:02" (2/3) ... [2020-10-29 13:06:06,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1181dd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:06:06, skipping insertion in model container [2020-10-29 13:06:06,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:06:06" (3/3) ... [2020-10-29 13:06:06,811 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:06:06,824 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:06:06,831 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:06:06,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:06:06,877 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:06:06,877 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:06:06,877 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:06:06,877 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:06:06,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:06:06,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:06:06,878 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:06:06,878 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:06:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states. [2020-10-29 13:06:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-29 13:06:06,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:06:06,961 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] [2020-10-29 13:06:06,961 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:06:06,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:06:06,968 INFO L82 PathProgramCache]: Analyzing trace with hash -150847687, now seen corresponding path program 1 times [2020-10-29 13:06:06,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:06:06,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484151885] [2020-10-29 13:06:06,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:06:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:07,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:08,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:09,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:09,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:10,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:10,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:10,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:11,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:11,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:12,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:06:12,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 13:06:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:06:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:06:12,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:06:12,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:06:12,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:06:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 13:06:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 13:06:12,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:06:13,888 WARN L193 SmtUtils]: Spent 911.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:06:13,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:06:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:13,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:06:13,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:06:13,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:06:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 13:06:13,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:06:13,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:06:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:06:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:06:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:06:13,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:06:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:06:14,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484151885] [2020-10-29 13:06:14,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:06:14,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:06:14,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803825344] [2020-10-29 13:06:14,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:06:14,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:06:14,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:06:14,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:06:14,270 INFO L87 Difference]: Start difference. First operand 922 states. Second operand 4 states. [2020-10-29 13:06:15,237 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-29 13:06:23,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:06:23,471 INFO L93 Difference]: Finished difference Result 1586 states and 2856 transitions. [2020-10-29 13:06:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:06:23,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2020-10-29 13:06:23,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:06:23,527 INFO L225 Difference]: With dead ends: 1586 [2020-10-29 13:06:23,528 INFO L226 Difference]: Without dead ends: 1305 [2020-10-29 13:06:23,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:06:23,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2020-10-29 13:06:23,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1302. [2020-10-29 13:06:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1302 states. [2020-10-29 13:06:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1998 transitions. [2020-10-29 13:06:23,700 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1998 transitions. Word has length 305 [2020-10-29 13:06:23,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:06:23,702 INFO L481 AbstractCegarLoop]: Abstraction has 1302 states and 1998 transitions. [2020-10-29 13:06:23,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:06:23,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1998 transitions. [2020-10-29 13:06:23,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-29 13:06:23,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:06:23,710 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] [2020-10-29 13:06:23,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:06:23,710 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:06:23,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:06:23,711 INFO L82 PathProgramCache]: Analyzing trace with hash -419222478, now seen corresponding path program 1 times [2020-10-29 13:06:23,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:06:23,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99072148] [2020-10-29 13:06:23,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:06:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:23,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:24,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:25,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:26,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:28,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:06:28,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 13:06:28,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:06:28,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:06:28,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:06:28,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:06:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:06:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-29 13:06:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-29 13:06:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:06:29,977 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:06:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:06:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:30,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:06:30,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:06:30,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:06:30,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:06:30,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:06:30,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:06:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:06:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:06:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:06:30,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:06:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:06:30,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99072148] [2020-10-29 13:06:30,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:06:30,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:06:30,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708248545] [2020-10-29 13:06:30,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:06:30,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:06:30,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:06:30,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:06:30,262 INFO L87 Difference]: Start difference. First operand 1302 states and 1998 transitions. Second operand 4 states. [2020-10-29 13:06:31,258 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-29 13:06:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:06:38,481 INFO L93 Difference]: Finished difference Result 2513 states and 3899 transitions. [2020-10-29 13:06:38,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:06:38,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2020-10-29 13:06:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:06:38,547 INFO L225 Difference]: With dead ends: 2513 [2020-10-29 13:06:38,547 INFO L226 Difference]: Without dead ends: 2185 [2020-10-29 13:06:38,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:06:38,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2020-10-29 13:06:38,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 2182. [2020-10-29 13:06:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2020-10-29 13:06:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 3361 transitions. [2020-10-29 13:06:38,650 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 3361 transitions. Word has length 305 [2020-10-29 13:06:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:06:38,652 INFO L481 AbstractCegarLoop]: Abstraction has 2182 states and 3361 transitions. [2020-10-29 13:06:38,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:06:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 3361 transitions. [2020-10-29 13:06:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-29 13:06:38,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:06:38,662 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] [2020-10-29 13:06:38,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:06:38,662 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:06:38,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:06:38,663 INFO L82 PathProgramCache]: Analyzing trace with hash -429719543, now seen corresponding path program 1 times [2020-10-29 13:06:38,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:06:38,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826537370] [2020-10-29 13:06:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:06:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:40,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:40,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:41,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:42,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:43,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:06:43,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 13:06:43,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:06:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-29 13:06:43,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:06:43,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:06:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:06:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:06:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 13:06:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:06:44,946 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:06:44,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:06:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:44,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:44,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:06:44,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:06:44,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:06:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:06:44,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:06:44,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:06:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:06:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:06:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:06:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:06:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:06:45,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826537370] [2020-10-29 13:06:45,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:06:45,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:06:45,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638273361] [2020-10-29 13:06:45,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:06:45,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:06:45,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:06:45,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:06:45,277 INFO L87 Difference]: Start difference. First operand 2182 states and 3361 transitions. Second operand 5 states. [2020-10-29 13:06:54,151 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:06:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:06:56,839 INFO L93 Difference]: Finished difference Result 6417 states and 9870 transitions. [2020-10-29 13:06:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:06:56,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-29 13:06:56,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:06:56,863 INFO L225 Difference]: With dead ends: 6417 [2020-10-29 13:06:56,864 INFO L226 Difference]: Without dead ends: 4268 [2020-10-29 13:06:56,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:06:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2020-10-29 13:06:57,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4122. [2020-10-29 13:06:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4122 states. [2020-10-29 13:06:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 6322 transitions. [2020-10-29 13:06:57,065 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 6322 transitions. Word has length 305 [2020-10-29 13:06:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:06:57,066 INFO L481 AbstractCegarLoop]: Abstraction has 4122 states and 6322 transitions. [2020-10-29 13:06:57,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:06:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 6322 transitions. [2020-10-29 13:06:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 13:06:57,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:06:57,078 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] [2020-10-29 13:06:57,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:06:57,078 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:06:57,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:06:57,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1315853123, now seen corresponding path program 1 times [2020-10-29 13:06:57,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:06:57,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516943935] [2020-10-29 13:06:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:06:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:57,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:57,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:57,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:58,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:58,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:58,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:58,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:58,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:02,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:02,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-29 13:07:02,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:07:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 13:07:02,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:02,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 13:07:02,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:03,196 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:07:03,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:03,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:03,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:03,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:07:03,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:03,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:03,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516943935] [2020-10-29 13:07:03,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:03,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:07:03,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329917675] [2020-10-29 13:07:03,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:07:03,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:03,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:07:03,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:03,452 INFO L87 Difference]: Start difference. First operand 4122 states and 6322 transitions. Second operand 5 states. [2020-10-29 13:07:12,541 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:07:14,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:14,966 INFO L93 Difference]: Finished difference Result 12128 states and 18565 transitions. [2020-10-29 13:07:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:07:14,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-29 13:07:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:15,004 INFO L225 Difference]: With dead ends: 12128 [2020-10-29 13:07:15,004 INFO L226 Difference]: Without dead ends: 8057 [2020-10-29 13:07:15,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:07:15,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8057 states. [2020-10-29 13:07:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8057 to 7999. [2020-10-29 13:07:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7999 states. [2020-10-29 13:07:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7999 states to 7999 states and 12183 transitions. [2020-10-29 13:07:15,494 INFO L78 Accepts]: Start accepts. Automaton has 7999 states and 12183 transitions. Word has length 307 [2020-10-29 13:07:15,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:15,495 INFO L481 AbstractCegarLoop]: Abstraction has 7999 states and 12183 transitions. [2020-10-29 13:07:15,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:07:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 7999 states and 12183 transitions. [2020-10-29 13:07:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 13:07:15,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:15,515 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] [2020-10-29 13:07:15,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:07:15,515 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:15,516 INFO L82 PathProgramCache]: Analyzing trace with hash 77802311, now seen corresponding path program 1 times [2020-10-29 13:07:15,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:15,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778622653] [2020-10-29 13:07:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:15,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:15,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:16,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:16,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:16,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:17,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:20,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:20,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:20,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 13:07:20,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:07:20,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 13:07:20,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:20,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:07:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 13:07:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 13:07:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:21,566 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:07:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:21,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:21,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:21,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:21,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:07:21,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:21,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:21,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778622653] [2020-10-29 13:07:21,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:21,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:07:21,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775573431] [2020-10-29 13:07:21,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:07:21,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:21,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:07:21,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:07:21,849 INFO L87 Difference]: Start difference. First operand 7999 states and 12183 transitions. Second operand 4 states. [2020-10-29 13:07:31,871 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2020-10-29 13:07:34,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:34,399 INFO L93 Difference]: Finished difference Result 23533 states and 35789 transitions. [2020-10-29 13:07:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:07:34,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2020-10-29 13:07:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:34,475 INFO L225 Difference]: With dead ends: 23533 [2020-10-29 13:07:34,475 INFO L226 Difference]: Without dead ends: 15697 [2020-10-29 13:07:34,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15697 states. [2020-10-29 13:07:35,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15697 to 15471. [2020-10-29 13:07:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15471 states. [2020-10-29 13:07:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15471 states to 15471 states and 23429 transitions. [2020-10-29 13:07:35,159 INFO L78 Accepts]: Start accepts. Automaton has 15471 states and 23429 transitions. Word has length 309 [2020-10-29 13:07:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:35,160 INFO L481 AbstractCegarLoop]: Abstraction has 15471 states and 23429 transitions. [2020-10-29 13:07:35,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:07:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 15471 states and 23429 transitions. [2020-10-29 13:07:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 13:07:35,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:35,189 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] [2020-10-29 13:07:35,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:07:35,189 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:35,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:35,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1718628706, now seen corresponding path program 1 times [2020-10-29 13:07:35,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:35,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608005803] [2020-10-29 13:07:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:35,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:35,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:35,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:35,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:35,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:36,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:36,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:36,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:37,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:40,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:40,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 13:07:40,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:07:40,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 13:07:40,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:40,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 13:07:40,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:41,294 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:07:41,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:41,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:41,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:41,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:41,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:07:41,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:41,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:07:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:41,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608005803] [2020-10-29 13:07:41,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:41,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:07:41,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420045364] [2020-10-29 13:07:41,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:07:41,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:41,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:07:41,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:41,501 INFO L87 Difference]: Start difference. First operand 15471 states and 23429 transitions. Second operand 5 states. [2020-10-29 13:07:50,478 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:07:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:53,209 INFO L93 Difference]: Finished difference Result 45677 states and 69062 transitions. [2020-10-29 13:07:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:07:53,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-29 13:07:53,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:53,293 INFO L225 Difference]: With dead ends: 45677 [2020-10-29 13:07:53,294 INFO L226 Difference]: Without dead ends: 30275 [2020-10-29 13:07:53,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:07:53,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30275 states. [2020-10-29 13:07:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30275 to 30193. [2020-10-29 13:07:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30193 states. [2020-10-29 13:07:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30193 states to 30193 states and 45336 transitions. [2020-10-29 13:07:54,611 INFO L78 Accepts]: Start accepts. Automaton has 30193 states and 45336 transitions. Word has length 309 [2020-10-29 13:07:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:54,611 INFO L481 AbstractCegarLoop]: Abstraction has 30193 states and 45336 transitions. [2020-10-29 13:07:54,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:07:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 30193 states and 45336 transitions. [2020-10-29 13:07:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-29 13:07:54,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:54,691 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] [2020-10-29 13:07:54,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:07:54,691 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash -306007363, now seen corresponding path program 1 times [2020-10-29 13:07:54,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:54,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322212452] [2020-10-29 13:07:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:54,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:54,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:55,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:55,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:55,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:57,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:59,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:59,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-29 13:07:59,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:07:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:07:59,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:59,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 13:07:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:00,885 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:08:00,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:00,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:00,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:00,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:00,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:08:00,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:00,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:00,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:01,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322212452] [2020-10-29 13:08:01,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:01,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:01,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650642802] [2020-10-29 13:08:01,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:01,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:01,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:01,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:01,118 INFO L87 Difference]: Start difference. First operand 30193 states and 45336 transitions. Second operand 5 states. [2020-10-29 13:08:12,172 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:08:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:15,502 INFO L93 Difference]: Finished difference Result 86032 states and 128909 transitions. [2020-10-29 13:08:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:15,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-29 13:08:15,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:15,635 INFO L225 Difference]: With dead ends: 86032 [2020-10-29 13:08:15,635 INFO L226 Difference]: Without dead ends: 56374 [2020-10-29 13:08:15,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:08:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56374 states. [2020-10-29 13:08:18,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56374 to 56248. [2020-10-29 13:08:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56248 states. [2020-10-29 13:08:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56248 states to 56248 states and 83792 transitions. [2020-10-29 13:08:18,642 INFO L78 Accepts]: Start accepts. Automaton has 56248 states and 83792 transitions. Word has length 311 [2020-10-29 13:08:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:18,643 INFO L481 AbstractCegarLoop]: Abstraction has 56248 states and 83792 transitions. [2020-10-29 13:08:18,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 56248 states and 83792 transitions. [2020-10-29 13:08:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-29 13:08:18,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:18,838 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] [2020-10-29 13:08:18,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:08:18,839 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:18,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:18,840 INFO L82 PathProgramCache]: Analyzing trace with hash 3608303, now seen corresponding path program 1 times [2020-10-29 13:08:18,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:18,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145292555] [2020-10-29 13:08:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:18,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:19,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:19,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:19,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:20,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:23,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:23,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-29 13:08:23,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:08:23,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:08:23,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:23,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:23,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:23,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:23,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 13:08:23,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:24,918 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:08:24,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:24,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:24,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:24,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:08:24,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:24,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:24,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:25,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145292555] [2020-10-29 13:08:25,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:25,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:25,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619762769] [2020-10-29 13:08:25,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:25,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:25,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:25,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:25,095 INFO L87 Difference]: Start difference. First operand 56248 states and 83792 transitions. Second operand 5 states. [2020-10-29 13:08:38,279 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:08:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:43,556 INFO L93 Difference]: Finished difference Result 164356 states and 244098 transitions. [2020-10-29 13:08:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:43,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-29 13:08:43,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:43,738 INFO L225 Difference]: With dead ends: 164356 [2020-10-29 13:08:43,738 INFO L226 Difference]: Without dead ends: 109886 [2020-10-29 13:08:43,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:08:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109886 states. [2020-10-29 13:08:50,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109886 to 109364. [2020-10-29 13:08:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109364 states. [2020-10-29 13:08:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109364 states to 109364 states and 161760 transitions. [2020-10-29 13:08:50,582 INFO L78 Accepts]: Start accepts. Automaton has 109364 states and 161760 transitions. Word has length 313 [2020-10-29 13:08:50,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:50,583 INFO L481 AbstractCegarLoop]: Abstraction has 109364 states and 161760 transitions. [2020-10-29 13:08:50,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 109364 states and 161760 transitions. [2020-10-29 13:08:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-29 13:08:50,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:50,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:08:50,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:08:50,681 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:50,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:50,681 INFO L82 PathProgramCache]: Analyzing trace with hash -476405930, now seen corresponding path program 1 times [2020-10-29 13:08:50,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:50,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957230555] [2020-10-29 13:08:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:50,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:55,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:55,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-29 13:08:55,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:08:55,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:08:55,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:55,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 13:08:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:56,957 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:08:56,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:56,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:56,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:56,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:56,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:08:56,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:56,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:56,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:56,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:56,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:56,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:57,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957230555] [2020-10-29 13:08:57,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:57,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:57,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756724574] [2020-10-29 13:08:57,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:57,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:57,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:57,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:57,157 INFO L87 Difference]: Start difference. First operand 109364 states and 161760 transitions. Second operand 5 states. [2020-10-29 13:09:15,930 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:09:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:23,783 INFO L93 Difference]: Finished difference Result 321157 states and 473804 transitions. [2020-10-29 13:09:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:09:23,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-29 13:09:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:24,312 INFO L225 Difference]: With dead ends: 321157 [2020-10-29 13:09:24,312 INFO L226 Difference]: Without dead ends: 213835 [2020-10-29 13:09:24,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:09:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213835 states.