/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.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:03:27,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:03:27,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:03:27,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:03:27,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:03:27,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:03:27,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:03:27,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:03:27,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:03:27,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:03:27,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:03:27,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:03:27,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:03:27,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:03:27,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:03:27,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:03:27,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:03:27,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:03:27,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:03:27,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:03:27,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:03:27,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:03:27,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:03:27,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:03:27,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:03:27,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:03:27,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:03:27,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:03:27,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:03:27,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:03:27,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:03:27,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:03:27,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:03:27,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:03:27,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:03:27,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:03:27,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:03:27,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:03:27,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:03:27,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:03:27,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:03:27,615 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 13:03:27,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:03:27,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:03:27,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:03:27,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:03:27,676 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:03:27,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:03:27,676 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:03:27,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:03:27,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:03:27,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:03:27,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:03:27,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:03:27,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:03:27,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:03:27,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:03:27,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:03:27,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:03:27,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:03:27,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:03:27,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:03:27,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:03:27,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:03:27,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:03:27,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:03:27,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:03:27,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:03:27,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:03:27,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:03:27,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:03:27,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:03:28,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:03:28,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:03:28,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:03:28,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:03:28,101 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:03:28,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:03:28,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93959038c/bc450a30c6f74056a064f3911a6713f6/FLAGfe91b4bc7 [2020-10-29 13:03:29,035 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:03:29,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:03:29,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93959038c/bc450a30c6f74056a064f3911a6713f6/FLAGfe91b4bc7 [2020-10-29 13:03:29,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93959038c/bc450a30c6f74056a064f3911a6713f6 [2020-10-29 13:03:29,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:03:29,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:03:29,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:03:29,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:03:29,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:03:29,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:03:29" (1/1) ... [2020-10-29 13:03:29,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151e2346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:29, skipping insertion in model container [2020-10-29 13:03:29,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:03:29" (1/1) ... [2020-10-29 13:03:29,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:03:29,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:03:29,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:03:29,808 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:03:29,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:03:30,030 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:03:30,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:30 WrapperNode [2020-10-29 13:03:30,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:03:30,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:03:30,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:03:30,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:03:30,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:30" (1/1) ... [2020-10-29 13:03:30,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:30" (1/1) ... [2020-10-29 13:03:30,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:30" (1/1) ... [2020-10-29 13:03:30,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:30" (1/1) ... [2020-10-29 13:03:30,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:30" (1/1) ... [2020-10-29 13:03:30,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:30" (1/1) ... [2020-10-29 13:03:30,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:30" (1/1) ... [2020-10-29 13:03:30,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:03:30,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:03:30,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:03:30,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:03:30,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:30" (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 13:03:30,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:03:30,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:03:30,231 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:03:30,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:03:30,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:03:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:03:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:03:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:03:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:03:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:03:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:03:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:03:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:03:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:03:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:03:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:03:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:03:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:03:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:03:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:03:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:03:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:03:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:03:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:03:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:03:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:03:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:03:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:03:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:03:31,815 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:03:31,815 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:03:31,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:03:31 BoogieIcfgContainer [2020-10-29 13:03:31,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:03:31,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:03:31,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:03:31,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:03:31,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:03:29" (1/3) ... [2020-10-29 13:03:31,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b8081a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:03:31, skipping insertion in model container [2020-10-29 13:03:31,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:30" (2/3) ... [2020-10-29 13:03:31,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b8081a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:03:31, skipping insertion in model container [2020-10-29 13:03:31,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:03:31" (3/3) ... [2020-10-29 13:03:31,828 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:03:31,841 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:03:31,846 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:03:31,861 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:03:31,893 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:03:31,893 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:03:31,893 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:03:31,893 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:03:31,893 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:03:31,894 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:03:31,894 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:03:31,894 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:03:31,921 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-29 13:03:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 13:03:31,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:31,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:03:31,941 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:31,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:31,948 INFO L82 PathProgramCache]: Analyzing trace with hash -655812944, now seen corresponding path program 1 times [2020-10-29 13:03:31,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:31,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808124391] [2020-10-29 13:03:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:32,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:37,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:37,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 13:03:37,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:03:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 13:03:37,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:37,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:03:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 13:03:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 13:03:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:03:38,192 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:03:38,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:38,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:38,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:38,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:38,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:38,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:03:38,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:38,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:03:38,302 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 13:03:38,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808124391] [2020-10-29 13:03:38,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:38,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:03:38,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555479129] [2020-10-29 13:03:38,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:03:38,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:38,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:03:38,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:03:38,336 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 4 states. [2020-10-29 13:03:38,988 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-29 13:03:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:41,433 INFO L93 Difference]: Finished difference Result 602 states and 1036 transitions. [2020-10-29 13:03:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:03:41,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-29 13:03:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:41,455 INFO L225 Difference]: With dead ends: 602 [2020-10-29 13:03:41,456 INFO L226 Difference]: Without dead ends: 452 [2020-10-29 13:03:41,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:41,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-29 13:03:41,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2020-10-29 13:03:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-29 13:03:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 739 transitions. [2020-10-29 13:03:41,554 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 739 transitions. Word has length 115 [2020-10-29 13:03:41,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:41,555 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 739 transitions. [2020-10-29 13:03:41,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:03:41,555 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 739 transitions. [2020-10-29 13:03:41,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 13:03:41,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:41,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:03:41,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:03:41,563 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:41,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:41,563 INFO L82 PathProgramCache]: Analyzing trace with hash 148684735, now seen corresponding path program 1 times [2020-10-29 13:03:41,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:41,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22254593] [2020-10-29 13:03:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 13:03:46,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:03:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 13:03:46,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:46,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 13:03:46,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:03:47,387 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:03:47,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:47,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:47,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:47,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:47,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:03:47,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:47,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:03:47,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22254593] [2020-10-29 13:03:47,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:47,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:47,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769143508] [2020-10-29 13:03:47,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:47,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:47,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:47,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:47,485 INFO L87 Difference]: Start difference. First operand 448 states and 739 transitions. Second operand 5 states. [2020-10-29 13:03:50,774 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:03:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:50,906 INFO L93 Difference]: Finished difference Result 1301 states and 2148 transitions. [2020-10-29 13:03:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:50,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-29 13:03:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:50,917 INFO L225 Difference]: With dead ends: 1301 [2020-10-29 13:03:50,917 INFO L226 Difference]: Without dead ends: 870 [2020-10-29 13:03:50,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-10-29 13:03:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 867. [2020-10-29 13:03:51,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-29 13:03:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1424 transitions. [2020-10-29 13:03:51,016 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1424 transitions. Word has length 118 [2020-10-29 13:03:51,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:51,017 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 1424 transitions. [2020-10-29 13:03:51,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1424 transitions. [2020-10-29 13:03:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:03:51,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:51,022 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] [2020-10-29 13:03:51,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:03:51,023 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:51,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1936006675, now seen corresponding path program 1 times [2020-10-29 13:03:51,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:51,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334621205] [2020-10-29 13:03:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:51,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:54,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:56,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:56,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:03:56,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:03:56,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:03:56,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:56,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 13:03:56,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:03:57,030 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:03:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:57,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:57,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:57,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:57,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:57,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:03:57,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:57,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:57,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:57,135 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 13:03:57,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334621205] [2020-10-29 13:03:57,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:57,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:57,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048734183] [2020-10-29 13:03:57,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:57,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:57,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:57,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:57,142 INFO L87 Difference]: Start difference. First operand 867 states and 1424 transitions. Second operand 5 states. [2020-10-29 13:04:00,324 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:04:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:00,471 INFO L93 Difference]: Finished difference Result 2478 states and 4064 transitions. [2020-10-29 13:04:00,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:04:00,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-29 13:04:00,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:00,482 INFO L225 Difference]: With dead ends: 2478 [2020-10-29 13:04:00,482 INFO L226 Difference]: Without dead ends: 1697 [2020-10-29 13:04:00,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:04:00,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-10-29 13:04:00,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1694. [2020-10-29 13:04:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1694 states. [2020-10-29 13:04:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2771 transitions. [2020-10-29 13:04:00,619 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2771 transitions. Word has length 120 [2020-10-29 13:04:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:00,620 INFO L481 AbstractCegarLoop]: Abstraction has 1694 states and 2771 transitions. [2020-10-29 13:04:00,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2771 transitions. [2020-10-29 13:04:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:04:00,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:00,627 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] [2020-10-29 13:04:00,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:04:00,627 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:00,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1681496823, now seen corresponding path program 1 times [2020-10-29 13:04:00,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:00,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254416793] [2020-10-29 13:04:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:00,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:01,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:05,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:05,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:04:05,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:04:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 13:04:05,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:05,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:04:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:04:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 13:04:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:06,376 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:04:06,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:06,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:06,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:06,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:06,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:06,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:04:06,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:06,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:06,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:06,476 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 13:04:06,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254416793] [2020-10-29 13:04:06,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:06,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:04:06,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428753374] [2020-10-29 13:04:06,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:04:06,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:06,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:04:06,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:06,481 INFO L87 Difference]: Start difference. First operand 1694 states and 2771 transitions. Second operand 5 states. [2020-10-29 13:04:09,281 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:04:09,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:09,422 INFO L93 Difference]: Finished difference Result 4884 states and 7981 transitions. [2020-10-29 13:04:09,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:04:09,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-29 13:04:09,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:09,443 INFO L225 Difference]: With dead ends: 4884 [2020-10-29 13:04:09,444 INFO L226 Difference]: Without dead ends: 3273 [2020-10-29 13:04:09,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:04:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2020-10-29 13:04:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 3270. [2020-10-29 13:04:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2020-10-29 13:04:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 5313 transitions. [2020-10-29 13:04:09,673 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 5313 transitions. Word has length 120 [2020-10-29 13:04:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:09,674 INFO L481 AbstractCegarLoop]: Abstraction has 3270 states and 5313 transitions. [2020-10-29 13:04:09,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:09,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 5313 transitions. [2020-10-29 13:04:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 13:04:09,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:09,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:04:09,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:04:09,684 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:09,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:09,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1962548538, now seen corresponding path program 1 times [2020-10-29 13:04:09,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:09,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228210536] [2020-10-29 13:04:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:09,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:14,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:14,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 13:04:14,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:04:14,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:04:14,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:14,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:04:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:04:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 13:04:14,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:15,428 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:04:15,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:15,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:15,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:15,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:15,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:15,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:04:15,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:15,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:15,506 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 13:04:15,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228210536] [2020-10-29 13:04:15,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:15,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:04:15,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855672646] [2020-10-29 13:04:15,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:04:15,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:15,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:04:15,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:15,509 INFO L87 Difference]: Start difference. First operand 3270 states and 5313 transitions. Second operand 5 states. [2020-10-29 13:04:18,680 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:04:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:18,912 INFO L93 Difference]: Finished difference Result 9404 states and 15255 transitions. [2020-10-29 13:04:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:04:18,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-29 13:04:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:18,949 INFO L225 Difference]: With dead ends: 9404 [2020-10-29 13:04:18,950 INFO L226 Difference]: Without dead ends: 6333 [2020-10-29 13:04:18,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:04:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2020-10-29 13:04:19,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 6330. [2020-10-29 13:04:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6330 states. [2020-10-29 13:04:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 10207 transitions. [2020-10-29 13:04:19,523 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 10207 transitions. Word has length 121 [2020-10-29 13:04:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:19,523 INFO L481 AbstractCegarLoop]: Abstraction has 6330 states and 10207 transitions. [2020-10-29 13:04:19,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 10207 transitions. [2020-10-29 13:04:19,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:04:19,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:19,537 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] [2020-10-29 13:04:19,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:04:19,537 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:19,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:19,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1237686682, now seen corresponding path program 1 times [2020-10-29 13:04:19,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:19,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608680328] [2020-10-29 13:04:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:19,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:19,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:20,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:20,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:24,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:24,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:04:24,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:04:24,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:04:24,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:24,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:04:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:04:24,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 13:04:24,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:25,261 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:04:25,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:25,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:25,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:25,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:25,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:04:25,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:25,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:25,348 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 13:04:25,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608680328] [2020-10-29 13:04:25,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:25,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:04:25,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101429184] [2020-10-29 13:04:25,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:04:25,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:25,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:04:25,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:25,351 INFO L87 Difference]: Start difference. First operand 6330 states and 10207 transitions. Second operand 5 states. [2020-10-29 13:04:28,753 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:04:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:29,050 INFO L93 Difference]: Finished difference Result 18253 states and 29357 transitions. [2020-10-29 13:04:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:04:29,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-29 13:04:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:29,115 INFO L225 Difference]: With dead ends: 18253 [2020-10-29 13:04:29,115 INFO L226 Difference]: Without dead ends: 12454 [2020-10-29 13:04:29,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:04:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12454 states. [2020-10-29 13:04:30,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12454 to 12451. [2020-10-29 13:04:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12451 states. [2020-10-29 13:04:30,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12451 states to 12451 states and 19959 transitions. [2020-10-29 13:04:30,186 INFO L78 Accepts]: Start accepts. Automaton has 12451 states and 19959 transitions. Word has length 122 [2020-10-29 13:04:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:30,186 INFO L481 AbstractCegarLoop]: Abstraction has 12451 states and 19959 transitions. [2020-10-29 13:04:30,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:30,186 INFO L276 IsEmpty]: Start isEmpty. Operand 12451 states and 19959 transitions. [2020-10-29 13:04:30,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:04:30,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:30,211 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] [2020-10-29 13:04:30,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:04:30,212 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:30,212 INFO L82 PathProgramCache]: Analyzing trace with hash -440595241, now seen corresponding path program 1 times [2020-10-29 13:04:30,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:30,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137840395] [2020-10-29 13:04:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:30,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:30,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:35,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:35,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:04:35,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:04:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 13:04:35,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:35,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:04:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:04:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 13:04:35,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:35,960 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:04:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:35,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:35,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:35,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:35,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:35,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:04:35,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:35,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:36,038 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 13:04:36,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137840395] [2020-10-29 13:04:36,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:36,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:04:36,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774567214] [2020-10-29 13:04:36,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:04:36,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:36,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:04:36,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:36,040 INFO L87 Difference]: Start difference. First operand 12451 states and 19959 transitions. Second operand 5 states. [2020-10-29 13:04:39,945 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:04:40,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:40,567 INFO L93 Difference]: Finished difference Result 35457 states and 56755 transitions. [2020-10-29 13:04:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:04:40,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-29 13:04:40,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:40,621 INFO L225 Difference]: With dead ends: 35457 [2020-10-29 13:04:40,621 INFO L226 Difference]: Without dead ends: 24174 [2020-10-29 13:04:40,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:04:40,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24174 states. [2020-10-29 13:04:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24174 to 24171. [2020-10-29 13:04:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24171 states. [2020-10-29 13:04:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24171 states to 24171 states and 38575 transitions. [2020-10-29 13:04:42,593 INFO L78 Accepts]: Start accepts. Automaton has 24171 states and 38575 transitions. Word has length 122 [2020-10-29 13:04:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:42,593 INFO L481 AbstractCegarLoop]: Abstraction has 24171 states and 38575 transitions. [2020-10-29 13:04:42,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 24171 states and 38575 transitions. [2020-10-29 13:04:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 13:04:42,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:42,640 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] [2020-10-29 13:04:42,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:04:42,641 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:42,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1991864256, now seen corresponding path program 1 times [2020-10-29 13:04:42,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:42,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506068888] [2020-10-29 13:04:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:42,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:43,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:43,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:47,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:47,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:47,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 13:04:47,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:04:47,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 13:04:47,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:47,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:04:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:04:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 13:04:47,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:48,413 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:04:48,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:48,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:48,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:48,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:48,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 13:04:48,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:48,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:04:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:04:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:48,528 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 13:04:48,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506068888] [2020-10-29 13:04:48,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:48,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:04:48,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953393521] [2020-10-29 13:04:48,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:04:48,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:48,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:04:48,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:04:48,540 INFO L87 Difference]: Start difference. First operand 24171 states and 38575 transitions. Second operand 8 states. [2020-10-29 13:04:49,241 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:04:54,305 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-29 13:04:56,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:56,730 INFO L93 Difference]: Finished difference Result 53629 states and 86919 transitions. [2020-10-29 13:04:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:04:56,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-29 13:04:56,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:56,839 INFO L225 Difference]: With dead ends: 53629 [2020-10-29 13:04:56,840 INFO L226 Difference]: Without dead ends: 40542 [2020-10-29 13:04:56,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 13:04:57,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40542 states. [2020-10-29 13:04:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40542 to 24459. [2020-10-29 13:04:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24459 states. [2020-10-29 13:04:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24459 states to 24459 states and 38767 transitions. [2020-10-29 13:04:59,242 INFO L78 Accepts]: Start accepts. Automaton has 24459 states and 38767 transitions. Word has length 123 [2020-10-29 13:04:59,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:59,242 INFO L481 AbstractCegarLoop]: Abstraction has 24459 states and 38767 transitions. [2020-10-29 13:04:59,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:04:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 24459 states and 38767 transitions. [2020-10-29 13:04:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 13:04:59,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:59,283 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] [2020-10-29 13:04:59,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:04:59,284 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:59,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:59,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1595896889, now seen corresponding path program 1 times [2020-10-29 13:04:59,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:59,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88177407] [2020-10-29 13:04:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:59,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:04,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:04,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:04,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 13:05:04,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:05:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:05:04,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:04,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:05:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:05:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 13:05:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:05,047 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:05:05,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:05:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:05,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:05,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:05:05,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:05:05,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:05:05,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:05,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:05:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:05:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:05:05,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:05,121 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 13:05:05,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88177407] [2020-10-29 13:05:05,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:05:05,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:05:05,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002836708] [2020-10-29 13:05:05,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:05:05,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:05:05,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:05:05,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:05:05,123 INFO L87 Difference]: Start difference. First operand 24459 states and 38767 transitions. Second operand 8 states. [2020-10-29 13:05:05,789 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:05:09,781 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-29 13:05:12,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:05:12,498 INFO L93 Difference]: Finished difference Result 45945 states and 73971 transitions. [2020-10-29 13:05:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:05:12,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-29 13:05:12,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:05:12,603 INFO L225 Difference]: With dead ends: 45945 [2020-10-29 13:05:12,603 INFO L226 Difference]: Without dead ends: 42118 [2020-10-29 13:05:12,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 13:05:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42118 states. [2020-10-29 13:05:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42118 to 24651. [2020-10-29 13:05:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24651 states. [2020-10-29 13:05:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24651 states to 24651 states and 39055 transitions. [2020-10-29 13:05:14,902 INFO L78 Accepts]: Start accepts. Automaton has 24651 states and 39055 transitions. Word has length 123 [2020-10-29 13:05:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:05:14,902 INFO L481 AbstractCegarLoop]: Abstraction has 24651 states and 39055 transitions. [2020-10-29 13:05:14,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:05:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 24651 states and 39055 transitions. [2020-10-29 13:05:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 13:05:14,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:05:14,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:05:14,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:05:14,926 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:05:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:05:14,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1813720712, now seen corresponding path program 1 times [2020-10-29 13:05:14,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:05:14,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590484549] [2020-10-29 13:05:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:05:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:15,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:15,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:18,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:18,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 13:05:18,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:05:18,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4002 [2020-10-29 13:05:18,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:18,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:05:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 13:05:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 13:05:18,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:19,585 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:05:19,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:05:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:19,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:19,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:19,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:05:19,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:05:19,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:05:19,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:19,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:05:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:05:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:05:19,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:19,632 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 13:05:19,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590484549] [2020-10-29 13:05:19,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:05:19,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:05:19,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97629153] [2020-10-29 13:05:19,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:05:19,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:05:19,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:05:19,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:05:19,634 INFO L87 Difference]: Start difference. First operand 24651 states and 39055 transitions. Second operand 4 states. [2020-10-29 13:05:20,294 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-29 13:05:25,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:05:25,234 INFO L93 Difference]: Finished difference Result 52177 states and 83859 transitions. [2020-10-29 13:05:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:05:25,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-29 13:05:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:05:25,315 INFO L225 Difference]: With dead ends: 52177 [2020-10-29 13:05:25,315 INFO L226 Difference]: Without dead ends: 37870 [2020-10-29 13:05:25,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:05:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37870 states. [2020-10-29 13:05:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37870 to 37739. [2020-10-29 13:05:29,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37739 states. [2020-10-29 13:05:29,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37739 states to 37739 states and 60079 transitions. [2020-10-29 13:05:29,405 INFO L78 Accepts]: Start accepts. Automaton has 37739 states and 60079 transitions. Word has length 123 [2020-10-29 13:05:29,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:05:29,405 INFO L481 AbstractCegarLoop]: Abstraction has 37739 states and 60079 transitions. [2020-10-29 13:05:29,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:05:29,406 INFO L276 IsEmpty]: Start isEmpty. Operand 37739 states and 60079 transitions. [2020-10-29 13:05:29,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 13:05:29,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:05:29,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:05:29,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:05:29,429 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:05:29,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:05:29,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1639607840, now seen corresponding path program 1 times [2020-10-29 13:05:29,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:05:29,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099091623] [2020-10-29 13:05:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:05:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:29,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:29,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:30,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:34,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 13:05:34,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:05:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:05:34,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:34,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:05:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:05:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 13:05:34,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:35,178 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:05:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:05:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:35,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:35,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:05:35,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:05:35,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:05:35,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:35,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:05:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:05:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:05:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:35,269 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 13:05:35,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099091623] [2020-10-29 13:05:35,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:05:35,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:05:35,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817412586] [2020-10-29 13:05:35,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:05:35,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:05:35,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:05:35,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:05:35,271 INFO L87 Difference]: Start difference. First operand 37739 states and 60079 transitions. Second operand 5 states. [2020-10-29 13:05:41,733 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:05:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:05:45,994 INFO L93 Difference]: Finished difference Result 109244 states and 173636 transitions. [2020-10-29 13:05:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:05:45,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 13:05:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:05:46,104 INFO L225 Difference]: With dead ends: 109244 [2020-10-29 13:05:46,104 INFO L226 Difference]: Without dead ends: 73673 [2020-10-29 13:05:46,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:05:46,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73673 states. [2020-10-29 13:05:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73673 to 73670. [2020-10-29 13:05:53,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73670 states. [2020-10-29 13:05:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73670 states to 73670 states and 116512 transitions. [2020-10-29 13:05:54,030 INFO L78 Accepts]: Start accepts. Automaton has 73670 states and 116512 transitions. Word has length 127 [2020-10-29 13:05:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:05:54,031 INFO L481 AbstractCegarLoop]: Abstraction has 73670 states and 116512 transitions. [2020-10-29 13:05:54,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:05:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 73670 states and 116512 transitions. [2020-10-29 13:05:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 13:05:54,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:05:54,101 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] [2020-10-29 13:05:54,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:05:54,102 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:05:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:05:54,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1723504990, now seen corresponding path program 1 times [2020-10-29 13:05:54,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:05:54,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107472417] [2020-10-29 13:05:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:05:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:54,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:54,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:54,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:57,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:59,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:59,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 13:05:59,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:05:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:05:59,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:59,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:05:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:05:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 13:05:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:59,858 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:05:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:05:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:59,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:59,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:05:59,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:05:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:05:59,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:59,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:05:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:05:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:05:59,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:59,941 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 13:05:59,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107472417] [2020-10-29 13:05:59,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:05:59,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:05:59,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45018438] [2020-10-29 13:05:59,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:05:59,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:05:59,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:05:59,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:05:59,945 INFO L87 Difference]: Start difference. First operand 73670 states and 116512 transitions. Second operand 5 states. [2020-10-29 13:06:09,360 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:06:18,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:06:18,749 INFO L93 Difference]: Finished difference Result 213481 states and 337181 transitions. [2020-10-29 13:06:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:06:18,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-29 13:06:18,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:06:19,029 INFO L225 Difference]: With dead ends: 213481 [2020-10-29 13:06:19,029 INFO L226 Difference]: Without dead ends: 144486 [2020-10-29 13:06:19,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:06:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144486 states. [2020-10-29 13:06:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144486 to 144483. [2020-10-29 13:06:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144483 states. [2020-10-29 13:06:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144483 states to 144483 states and 227369 transitions. [2020-10-29 13:06:36,104 INFO L78 Accepts]: Start accepts. Automaton has 144483 states and 227369 transitions. Word has length 129 [2020-10-29 13:06:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:06:36,105 INFO L481 AbstractCegarLoop]: Abstraction has 144483 states and 227369 transitions. [2020-10-29 13:06:36,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:06:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 144483 states and 227369 transitions. [2020-10-29 13:06:36,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 13:06:36,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:06:36,519 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] [2020-10-29 13:06:36,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:06:36,519 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:06:36,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:06:36,520 INFO L82 PathProgramCache]: Analyzing trace with hash 562800151, now seen corresponding path program 1 times [2020-10-29 13:06:36,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:06:36,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888425861] [2020-10-29 13:06:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:06:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:36,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:39,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:40,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:41,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:06:41,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 13:06:41,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:06:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 13:06:41,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:06:41,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:06:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:06:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:06:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 13:06:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:06:42,241 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:06:42,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:06:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:42,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:42,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:06:42,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:06:42,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:06:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:06:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:06:42,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:06:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:06:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:06:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:06:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:06:42,302 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 13:06:42,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888425861] [2020-10-29 13:06:42,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:06:42,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:06:42,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219926860] [2020-10-29 13:06:42,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:06:42,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:06:42,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:06:42,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:06:42,304 INFO L87 Difference]: Start difference. First operand 144483 states and 227369 transitions. Second operand 5 states. [2020-10-29 13:06:59,584 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 283