/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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:55:20,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:55:20,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:55:20,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:55:20,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:55:20,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:55:20,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:55:20,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:55:20,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:55:20,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:55:20,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:55:20,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:55:20,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:55:20,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:55:20,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:55:20,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:55:20,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:55:20,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:55:20,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:55:20,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:55:20,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:55:20,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:55:20,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:55:20,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:55:20,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:55:20,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:55:20,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:55:20,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:55:20,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:55:20,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:55:20,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:55:20,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:55:20,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:55:20,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:55:20,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:55:20,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:55:20,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:55:20,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:55:20,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:55:20,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:55:20,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:55:20,511 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 12:55:20,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:55:20,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:55:20,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:55:20,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:55:20,538 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:55:20,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:55:20,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:55:20,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:55:20,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:55:20,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:55:20,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:55:20,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:55:20,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:55:20,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:55:20,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:55:20,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:55:20,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:55:20,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:55:20,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:55:20,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:55:20,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:55:20,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:55:20,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:55:20,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:55:20,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:55:20,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:55:20,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:55:20,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:55:20,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:55:20,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:55:20,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:55:20,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:55:20,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:55:20,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:55:20,940 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:55:20,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 12:55:21,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11a2856c2/bd400fc608c7413cb03517fad4608944/FLAG87e457f5e [2020-10-29 12:55:21,751 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:55:21,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 12:55:21,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11a2856c2/bd400fc608c7413cb03517fad4608944/FLAG87e457f5e [2020-10-29 12:55:22,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11a2856c2/bd400fc608c7413cb03517fad4608944 [2020-10-29 12:55:22,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:55:22,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:55:22,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:55:22,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:55:22,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:55:22,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:55:22" (1/1) ... [2020-10-29 12:55:22,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc7aac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22, skipping insertion in model container [2020-10-29 12:55:22,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:55:22" (1/1) ... [2020-10-29 12:55:22,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:55:22,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:55:22,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:55:22,529 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:55:22,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:55:22,709 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:55:22,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22 WrapperNode [2020-10-29 12:55:22,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:55:22,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:55:22,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:55:22,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:55:22,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22" (1/1) ... [2020-10-29 12:55:22,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22" (1/1) ... [2020-10-29 12:55:22,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22" (1/1) ... [2020-10-29 12:55:22,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22" (1/1) ... [2020-10-29 12:55:22,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22" (1/1) ... [2020-10-29 12:55:22,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22" (1/1) ... [2020-10-29 12:55:22,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22" (1/1) ... [2020-10-29 12:55:22,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:55:22,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:55:22,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:55:22,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:55:22,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22" (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 12:55:22,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:55:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:55:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:55:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:55:22,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:55:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:55:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:55:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:55:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:55:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:55:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:55:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:55:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:55:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:55:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:55:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:55:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:55:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:55:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:55:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:55:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:55:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:55:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:55:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:55:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:55:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:55:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:55:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:55:24,182 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:55:24,183 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:55:24,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:55:24 BoogieIcfgContainer [2020-10-29 12:55:24,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:55:24,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:55:24,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:55:24,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:55:24,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:55:22" (1/3) ... [2020-10-29 12:55:24,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66db279e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:55:24, skipping insertion in model container [2020-10-29 12:55:24,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:22" (2/3) ... [2020-10-29 12:55:24,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66db279e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:55:24, skipping insertion in model container [2020-10-29 12:55:24,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:55:24" (3/3) ... [2020-10-29 12:55:24,195 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 12:55:24,207 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:55:24,213 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:55:24,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:55:24,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:55:24,256 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:55:24,257 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:55:24,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:55:24,257 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:55:24,257 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:55:24,257 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:55:24,257 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:55:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-10-29 12:55:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 12:55:24,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:24,294 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] [2020-10-29 12:55:24,294 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1796081780, now seen corresponding path program 1 times [2020-10-29 12:55:24,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:24,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547232567] [2020-10-29 12:55:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:25,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:25,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:26,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:29,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:29,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:55:29,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:55:29,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:55:29,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:29,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:55:29,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:55:30,333 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:55:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:30,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:30,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:30,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:30,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:55:30,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:30,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:30,429 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 12:55:30,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547232567] [2020-10-29 12:55:30,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:30,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:30,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842485943] [2020-10-29 12:55:30,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:30,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:30,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:30,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:30,457 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2020-10-29 12:55:32,113 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:55:32,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:32,944 INFO L93 Difference]: Finished difference Result 701 states and 1245 transitions. [2020-10-29 12:55:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:55:32,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-29 12:55:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:32,972 INFO L225 Difference]: With dead ends: 701 [2020-10-29 12:55:32,972 INFO L226 Difference]: Without dead ends: 462 [2020-10-29 12:55:32,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-29 12:55:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 437. [2020-10-29 12:55:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-29 12:55:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 634 transitions. [2020-10-29 12:55:33,068 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 634 transitions. Word has length 97 [2020-10-29 12:55:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:33,069 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 634 transitions. [2020-10-29 12:55:33,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 634 transitions. [2020-10-29 12:55:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 12:55:33,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:33,075 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] [2020-10-29 12:55:33,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:55:33,075 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:33,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:33,076 INFO L82 PathProgramCache]: Analyzing trace with hash 233145179, now seen corresponding path program 1 times [2020-10-29 12:55:33,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:33,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27784220] [2020-10-29 12:55:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:33,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:33,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:33,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:33,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:33,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:38,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:38,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 12:55:38,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:55:38,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:55:38,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:38,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:38,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:38,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:38,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 12:55:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:38,506 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:55:38,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:38,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:38,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:38,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:38,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:55:38,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:38,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:38,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:38,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:38,645 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 12:55:38,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27784220] [2020-10-29 12:55:38,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:38,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:38,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110475736] [2020-10-29 12:55:38,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:38,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:38,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:38,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:38,653 INFO L87 Difference]: Start difference. First operand 437 states and 634 transitions. Second operand 5 states. [2020-10-29 12:55:40,181 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:55:41,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:41,068 INFO L93 Difference]: Finished difference Result 1124 states and 1646 transitions. [2020-10-29 12:55:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:41,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-29 12:55:41,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:41,074 INFO L225 Difference]: With dead ends: 1124 [2020-10-29 12:55:41,074 INFO L226 Difference]: Without dead ends: 833 [2020-10-29 12:55:41,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-10-29 12:55:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 821. [2020-10-29 12:55:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-10-29 12:55:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1184 transitions. [2020-10-29 12:55:41,159 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1184 transitions. Word has length 98 [2020-10-29 12:55:41,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:41,160 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1184 transitions. [2020-10-29 12:55:41,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:41,160 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1184 transitions. [2020-10-29 12:55:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 12:55:41,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:41,171 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] [2020-10-29 12:55:41,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:55:41,172 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:41,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:41,175 INFO L82 PathProgramCache]: Analyzing trace with hash -187696109, now seen corresponding path program 1 times [2020-10-29 12:55:41,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:41,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689174809] [2020-10-29 12:55:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:41,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:41,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:46,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:55:46,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:55:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:55:46,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:46,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:55:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:46,502 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:55:46,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:46,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:46,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:46,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:46,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:46,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:55:46,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:46,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:46,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:46,567 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 12:55:46,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689174809] [2020-10-29 12:55:46,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:46,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:46,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201071944] [2020-10-29 12:55:46,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:46,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:46,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:46,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:46,574 INFO L87 Difference]: Start difference. First operand 821 states and 1184 transitions. Second operand 5 states. [2020-10-29 12:55:47,871 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:55:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:48,734 INFO L93 Difference]: Finished difference Result 2392 states and 3441 transitions. [2020-10-29 12:55:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:48,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-29 12:55:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:48,745 INFO L225 Difference]: With dead ends: 2392 [2020-10-29 12:55:48,745 INFO L226 Difference]: Without dead ends: 1587 [2020-10-29 12:55:48,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:48,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-10-29 12:55:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1558. [2020-10-29 12:55:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-10-29 12:55:48,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2222 transitions. [2020-10-29 12:55:48,879 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2222 transitions. Word has length 99 [2020-10-29 12:55:48,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:48,880 INFO L481 AbstractCegarLoop]: Abstraction has 1558 states and 2222 transitions. [2020-10-29 12:55:48,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2222 transitions. [2020-10-29 12:55:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 12:55:48,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:48,884 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] [2020-10-29 12:55:48,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:55:48,884 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:48,885 INFO L82 PathProgramCache]: Analyzing trace with hash -289037250, now seen corresponding path program 1 times [2020-10-29 12:55:48,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:48,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943657049] [2020-10-29 12:55:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:48,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:49,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:51,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:53,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:53,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:53,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:55:53,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:55:53,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:55:53,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:53,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 12:55:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:54,307 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:55:54,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:54,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:54,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:54,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:54,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:55:54,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:54,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:54,389 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 12:55:54,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943657049] [2020-10-29 12:55:54,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:54,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:54,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619912757] [2020-10-29 12:55:54,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:54,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:54,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:54,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:54,392 INFO L87 Difference]: Start difference. First operand 1558 states and 2222 transitions. Second operand 5 states. [2020-10-29 12:55:55,637 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:55:56,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:56,491 INFO L93 Difference]: Finished difference Result 4490 states and 6370 transitions. [2020-10-29 12:55:56,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:56,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-29 12:55:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:56,506 INFO L225 Difference]: With dead ends: 4490 [2020-10-29 12:55:56,506 INFO L226 Difference]: Without dead ends: 2994 [2020-10-29 12:55:56,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-10-29 12:55:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2951. [2020-10-29 12:55:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2951 states. [2020-10-29 12:55:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 4152 transitions. [2020-10-29 12:55:56,716 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 4152 transitions. Word has length 100 [2020-10-29 12:55:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:56,717 INFO L481 AbstractCegarLoop]: Abstraction has 2951 states and 4152 transitions. [2020-10-29 12:55:56,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 4152 transitions. [2020-10-29 12:55:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 12:55:56,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:56,723 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] [2020-10-29 12:55:56,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:55:56,724 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:56,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:56,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1644370831, now seen corresponding path program 1 times [2020-10-29 12:55:56,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:56,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017705002] [2020-10-29 12:55:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:56,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:56,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:56,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:59,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:01,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:01,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:01,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 12:56:01,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:56:01,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 12:56:01,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:01,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:01,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:01,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:01,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 12:56:01,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:02,085 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:56:02,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:02,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:02,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:02,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:02,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:56:02,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:02,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:02,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:02,141 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 12:56:02,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017705002] [2020-10-29 12:56:02,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:02,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:02,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111854364] [2020-10-29 12:56:02,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:02,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:02,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:02,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:02,143 INFO L87 Difference]: Start difference. First operand 2951 states and 4152 transitions. Second operand 5 states. [2020-10-29 12:56:03,397 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:56:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:04,323 INFO L93 Difference]: Finished difference Result 8531 states and 11952 transitions. [2020-10-29 12:56:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:04,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-29 12:56:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:04,352 INFO L225 Difference]: With dead ends: 8531 [2020-10-29 12:56:04,352 INFO L226 Difference]: Without dead ends: 5696 [2020-10-29 12:56:04,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:04,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-29 12:56:04,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5671. [2020-10-29 12:56:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2020-10-29 12:56:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 7860 transitions. [2020-10-29 12:56:04,774 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 7860 transitions. Word has length 101 [2020-10-29 12:56:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:04,774 INFO L481 AbstractCegarLoop]: Abstraction has 5671 states and 7860 transitions. [2020-10-29 12:56:04,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 7860 transitions. [2020-10-29 12:56:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 12:56:04,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:04,783 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] [2020-10-29 12:56:04,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:56:04,784 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:04,784 INFO L82 PathProgramCache]: Analyzing trace with hash 355638621, now seen corresponding path program 1 times [2020-10-29 12:56:04,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:04,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758607558] [2020-10-29 12:56:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:04,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:04,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:09,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 12:56:09,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:56:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:56:09,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:09,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:56:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:10,085 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:56:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:10,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:10,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:10,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:10,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:10,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:56:10,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:10,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:10,138 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 12:56:10,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758607558] [2020-10-29 12:56:10,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:10,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:10,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854584138] [2020-10-29 12:56:10,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:10,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:10,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:10,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:10,140 INFO L87 Difference]: Start difference. First operand 5671 states and 7860 transitions. Second operand 5 states. [2020-10-29 12:56:11,591 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:56:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:12,566 INFO L93 Difference]: Finished difference Result 16508 states and 22804 transitions. [2020-10-29 12:56:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:12,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-29 12:56:12,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:12,612 INFO L225 Difference]: With dead ends: 16508 [2020-10-29 12:56:12,612 INFO L226 Difference]: Without dead ends: 10853 [2020-10-29 12:56:12,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2020-10-29 12:56:13,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 10838. [2020-10-29 12:56:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10838 states. [2020-10-29 12:56:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10838 states to 10838 states and 14809 transitions. [2020-10-29 12:56:13,410 INFO L78 Accepts]: Start accepts. Automaton has 10838 states and 14809 transitions. Word has length 102 [2020-10-29 12:56:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:13,411 INFO L481 AbstractCegarLoop]: Abstraction has 10838 states and 14809 transitions. [2020-10-29 12:56:13,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 10838 states and 14809 transitions. [2020-10-29 12:56:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 12:56:13,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:13,428 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] [2020-10-29 12:56:13,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:56:13,428 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:13,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:13,429 INFO L82 PathProgramCache]: Analyzing trace with hash -376659663, now seen corresponding path program 1 times [2020-10-29 12:56:13,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:13,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947902524] [2020-10-29 12:56:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:13,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:13,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:13,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:18,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 12:56:18,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:56:18,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:56:18,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:18,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:56:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:56:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:18,784 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:56:18,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:18,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:18,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:56:18,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:18,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:18,835 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 12:56:18,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947902524] [2020-10-29 12:56:18,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:18,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:18,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399711249] [2020-10-29 12:56:18,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:18,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:18,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:18,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:18,838 INFO L87 Difference]: Start difference. First operand 10838 states and 14809 transitions. Second operand 5 states. [2020-10-29 12:56:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:20,218 INFO L93 Difference]: Finished difference Result 17127 states and 23534 transitions. [2020-10-29 12:56:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:56:20,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-29 12:56:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:20,251 INFO L225 Difference]: With dead ends: 17127 [2020-10-29 12:56:20,251 INFO L226 Difference]: Without dead ends: 7012 [2020-10-29 12:56:20,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7012 states. [2020-10-29 12:56:20,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7012 to 7011. [2020-10-29 12:56:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7011 states. [2020-10-29 12:56:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 9539 transitions. [2020-10-29 12:56:20,784 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 9539 transitions. Word has length 103 [2020-10-29 12:56:20,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:20,785 INFO L481 AbstractCegarLoop]: Abstraction has 7011 states and 9539 transitions. [2020-10-29 12:56:20,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 9539 transitions. [2020-10-29 12:56:20,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:56:20,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:20,796 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] [2020-10-29 12:56:20,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:56:20,797 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:20,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:20,797 INFO L82 PathProgramCache]: Analyzing trace with hash -525884600, now seen corresponding path program 1 times [2020-10-29 12:56:20,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:20,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352805432] [2020-10-29 12:56:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:20,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:20,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:21,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:21,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:25,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:56:25,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:56:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:56:25,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:25,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:56:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:26,158 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:56:26,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:26,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:26,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:26,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:56:26,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:26,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:26,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:26,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:26,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:26,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:26,207 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 12:56:26,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352805432] [2020-10-29 12:56:26,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:26,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:26,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604469674] [2020-10-29 12:56:26,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:26,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:26,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:26,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:26,210 INFO L87 Difference]: Start difference. First operand 7011 states and 9539 transitions. Second operand 5 states. [2020-10-29 12:56:26,481 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 12:56:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:28,681 INFO L93 Difference]: Finished difference Result 12467 states and 16992 transitions. [2020-10-29 12:56:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:28,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-29 12:56:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:28,700 INFO L225 Difference]: With dead ends: 12467 [2020-10-29 12:56:28,700 INFO L226 Difference]: Without dead ends: 7025 [2020-10-29 12:56:28,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:28,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2020-10-29 12:56:29,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 7011. [2020-10-29 12:56:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7011 states. [2020-10-29 12:56:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 9503 transitions. [2020-10-29 12:56:29,131 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 9503 transitions. Word has length 106 [2020-10-29 12:56:29,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:29,131 INFO L481 AbstractCegarLoop]: Abstraction has 7011 states and 9503 transitions. [2020-10-29 12:56:29,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 9503 transitions. [2020-10-29 12:56:29,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 12:56:29,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:29,140 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] [2020-10-29 12:56:29,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:56:29,141 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:29,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:29,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1059922657, now seen corresponding path program 1 times [2020-10-29 12:56:29,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:29,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341987643] [2020-10-29 12:56:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:29,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:29,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:29,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:34,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:34,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 12:56:34,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:56:34,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:56:34,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:34,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:34,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:56:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:56:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:56:34,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:34,495 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:56:34,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:34,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:34,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:34,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:34,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:56:34,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:34,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:34,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:34,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:34,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:56:34,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:34,550 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 12:56:34,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341987643] [2020-10-29 12:56:34,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:34,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:34,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207709982] [2020-10-29 12:56:34,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:56:34,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:34,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:56:34,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:34,553 INFO L87 Difference]: Start difference. First operand 7011 states and 9503 transitions. Second operand 6 states. [2020-10-29 12:56:34,846 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:56:36,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:36,171 INFO L93 Difference]: Finished difference Result 12389 states and 17172 transitions. [2020-10-29 12:56:36,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:56:36,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-29 12:56:36,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:36,187 INFO L225 Difference]: With dead ends: 12389 [2020-10-29 12:56:36,187 INFO L226 Difference]: Without dead ends: 7011 [2020-10-29 12:56:36,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:56:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7011 states. [2020-10-29 12:56:36,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7011 to 7011. [2020-10-29 12:56:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7011 states. [2020-10-29 12:56:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 9391 transitions. [2020-10-29 12:56:36,757 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 9391 transitions. Word has length 107 [2020-10-29 12:56:36,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:36,757 INFO L481 AbstractCegarLoop]: Abstraction has 7011 states and 9391 transitions. [2020-10-29 12:56:36,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:56:36,757 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 9391 transitions. [2020-10-29 12:56:36,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 12:56:36,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:36,765 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] [2020-10-29 12:56:36,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:56:36,765 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:36,766 INFO L82 PathProgramCache]: Analyzing trace with hash -2125394180, now seen corresponding path program 1 times [2020-10-29 12:56:36,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:36,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912944073] [2020-10-29 12:56:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:41,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:41,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 12:56:41,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:56:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:56:41,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:41,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:56:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:56:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:42,080 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:56:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:42,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:42,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:42,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:42,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:56:42,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:42,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:42,111 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 12:56:42,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912944073] [2020-10-29 12:56:42,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:42,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:42,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255848776] [2020-10-29 12:56:42,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:42,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:42,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:42,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:42,113 INFO L87 Difference]: Start difference. First operand 7011 states and 9391 transitions. Second operand 5 states. [2020-10-29 12:56:43,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:43,413 INFO L93 Difference]: Finished difference Result 12066 states and 16282 transitions. [2020-10-29 12:56:43,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:56:43,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-29 12:56:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:43,425 INFO L225 Difference]: With dead ends: 12066 [2020-10-29 12:56:43,425 INFO L226 Difference]: Without dead ends: 5717 [2020-10-29 12:56:43,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5717 states. [2020-10-29 12:56:43,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5717 to 5714. [2020-10-29 12:56:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-10-29 12:56:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 7626 transitions. [2020-10-29 12:56:43,876 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 7626 transitions. Word has length 107 [2020-10-29 12:56:43,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:43,877 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 7626 transitions. [2020-10-29 12:56:43,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 7626 transitions. [2020-10-29 12:56:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 12:56:43,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:43,885 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] [2020-10-29 12:56:43,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:56:43,885 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:43,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash 661413959, now seen corresponding path program 1 times [2020-10-29 12:56:43,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:43,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365627923] [2020-10-29 12:56:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:43,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:43,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:48,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 12:56:48,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:56:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:56:48,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:48,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:56:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:49,273 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:56:49,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:49,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:49,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:49,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:49,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:56:49,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:49,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:49,318 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 12:56:49,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365627923] [2020-10-29 12:56:49,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:49,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:49,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521357348] [2020-10-29 12:56:49,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:49,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:49,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:49,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:49,321 INFO L87 Difference]: Start difference. First operand 5714 states and 7626 transitions. Second operand 5 states. [2020-10-29 12:56:49,592 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 12:56:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:51,711 INFO L93 Difference]: Finished difference Result 9821 states and 13132 transitions. [2020-10-29 12:56:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:51,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-29 12:56:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:51,718 INFO L225 Difference]: With dead ends: 9821 [2020-10-29 12:56:51,718 INFO L226 Difference]: Without dead ends: 5708 [2020-10-29 12:56:51,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2020-10-29 12:56:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 5696. [2020-10-29 12:56:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-29 12:56:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7565 transitions. [2020-10-29 12:56:52,228 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7565 transitions. Word has length 110 [2020-10-29 12:56:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:52,229 INFO L481 AbstractCegarLoop]: Abstraction has 5696 states and 7565 transitions. [2020-10-29 12:56:52,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7565 transitions. [2020-10-29 12:56:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 12:56:52,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:52,236 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] [2020-10-29 12:56:52,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:56:52,236 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash -695037370, now seen corresponding path program 1 times [2020-10-29 12:56:52,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:52,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294236022] [2020-10-29 12:56:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:52,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:52,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:52,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:54,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:57,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:56:57,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:56:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:56:57,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:57,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:56:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:56:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 12:56:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:57,660 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:56:57,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:57,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:57,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:57,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:56:57,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:57,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:56:57,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:57,727 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 12:56:57,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294236022] [2020-10-29 12:56:57,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:57,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:56:57,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669347132] [2020-10-29 12:56:57,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:56:57,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:57,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:56:57,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:56:57,729 INFO L87 Difference]: Start difference. First operand 5696 states and 7565 transitions. Second operand 11 states. [2020-10-29 12:56:58,040 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:56:59,413 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 12:56:59,700 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:57:01,293 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:57:01,608 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-29 12:57:03,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:03,023 INFO L93 Difference]: Finished difference Result 25407 states and 37235 transitions. [2020-10-29 12:57:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 12:57:03,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2020-10-29 12:57:03,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:03,047 INFO L225 Difference]: With dead ends: 25407 [2020-10-29 12:57:03,047 INFO L226 Difference]: Without dead ends: 21685 [2020-10-29 12:57:03,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-29 12:57:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21685 states. [2020-10-29 12:57:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21685 to 8791. [2020-10-29 12:57:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8791 states. [2020-10-29 12:57:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8791 states to 8791 states and 11827 transitions. [2020-10-29 12:57:04,014 INFO L78 Accepts]: Start accepts. Automaton has 8791 states and 11827 transitions. Word has length 111 [2020-10-29 12:57:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:04,014 INFO L481 AbstractCegarLoop]: Abstraction has 8791 states and 11827 transitions. [2020-10-29 12:57:04,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:57:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 8791 states and 11827 transitions. [2020-10-29 12:57:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 12:57:04,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:04,021 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] [2020-10-29 12:57:04,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:57:04,021 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:04,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:04,022 INFO L82 PathProgramCache]: Analyzing trace with hash -960776854, now seen corresponding path program 1 times [2020-10-29 12:57:04,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:04,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901329052] [2020-10-29 12:57:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:04,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:04,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:09,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:09,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:57:09,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:57:09,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 12:57:09,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:09,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:09,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:57:09,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:57:09,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:57:09,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:09,407 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:57:09,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:09,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:09,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:09,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:57:09,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:09,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:57:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:57:09,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:09,454 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 12:57:09,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901329052] [2020-10-29 12:57:09,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:09,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:09,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667256893] [2020-10-29 12:57:09,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:57:09,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:09,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:57:09,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:09,456 INFO L87 Difference]: Start difference. First operand 8791 states and 11827 transitions. Second operand 6 states. [2020-10-29 12:57:09,747 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:57:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:11,343 INFO L93 Difference]: Finished difference Result 14373 states and 19959 transitions. [2020-10-29 12:57:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:57:11,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-29 12:57:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:11,354 INFO L225 Difference]: With dead ends: 14373 [2020-10-29 12:57:11,354 INFO L226 Difference]: Without dead ends: 7700 [2020-10-29 12:57:11,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:57:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7700 states. [2020-10-29 12:57:12,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7700 to 7700. [2020-10-29 12:57:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7700 states. [2020-10-29 12:57:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7700 states to 7700 states and 10417 transitions. [2020-10-29 12:57:12,160 INFO L78 Accepts]: Start accepts. Automaton has 7700 states and 10417 transitions. Word has length 111 [2020-10-29 12:57:12,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:12,160 INFO L481 AbstractCegarLoop]: Abstraction has 7700 states and 10417 transitions. [2020-10-29 12:57:12,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:57:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 7700 states and 10417 transitions. [2020-10-29 12:57:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 12:57:12,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:12,165 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] [2020-10-29 12:57:12,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:57:12,165 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:12,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1207054785, now seen corresponding path program 1 times [2020-10-29 12:57:12,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:12,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817631650] [2020-10-29 12:57:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:12,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:12,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:12,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:16,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:16,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:57:16,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:57:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4421 [2020-10-29 12:57:16,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:16,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 12:57:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:57:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:16,903 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:57:16,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:16,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:16,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:16,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:16,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:57:16,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:16,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:16,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:16,951 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 12:57:16,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817631650] [2020-10-29 12:57:16,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:16,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:16,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958154876] [2020-10-29 12:57:16,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:16,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:16,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:16,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:16,953 INFO L87 Difference]: Start difference. First operand 7700 states and 10417 transitions. Second operand 5 states. [2020-10-29 12:57:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:18,431 INFO L93 Difference]: Finished difference Result 13445 states and 18253 transitions. [2020-10-29 12:57:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:57:18,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-29 12:57:18,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:18,439 INFO L225 Difference]: With dead ends: 13445 [2020-10-29 12:57:18,439 INFO L226 Difference]: Without dead ends: 6223 [2020-10-29 12:57:18,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6223 states. [2020-10-29 12:57:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6223 to 6223. [2020-10-29 12:57:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-10-29 12:57:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 8357 transitions. [2020-10-29 12:57:19,025 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 8357 transitions. Word has length 111 [2020-10-29 12:57:19,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:19,026 INFO L481 AbstractCegarLoop]: Abstraction has 6223 states and 8357 transitions. [2020-10-29 12:57:19,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:19,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 8357 transitions. [2020-10-29 12:57:19,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 12:57:19,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:19,029 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] [2020-10-29 12:57:19,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:57:19,030 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:19,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1766266660, now seen corresponding path program 1 times [2020-10-29 12:57:19,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:19,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463257918] [2020-10-29 12:57:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:19,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:19,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:24,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:24,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:57:24,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:57:24,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 12:57:24,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:24,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:24,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:57:24,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:24,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 12:57:24,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:24,342 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-10-29 12:57:24,653 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:57:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:24,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:24,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:24,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:24,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:57:24,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:24,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:24,732 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 12:57:24,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463257918] [2020-10-29 12:57:24,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:24,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:57:24,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877141366] [2020-10-29 12:57:24,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:57:24,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:24,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:57:24,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:57:24,734 INFO L87 Difference]: Start difference. First operand 6223 states and 8357 transitions. Second operand 11 states. [2020-10-29 12:57:25,049 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:57:27,164 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 12:57:27,468 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 12:57:27,745 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:57:28,123 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 12:57:28,478 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:57:28,761 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-29 12:57:29,062 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 12:57:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:34,182 INFO L93 Difference]: Finished difference Result 40489 states and 59200 transitions. [2020-10-29 12:57:34,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:57:34,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2020-10-29 12:57:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:34,222 INFO L225 Difference]: With dead ends: 40489 [2020-10-29 12:57:34,223 INFO L226 Difference]: Without dead ends: 36997 [2020-10-29 12:57:34,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2020-10-29 12:57:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36997 states. [2020-10-29 12:57:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36997 to 10287. [2020-10-29 12:57:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10287 states. [2020-10-29 12:57:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10287 states to 10287 states and 14237 transitions. [2020-10-29 12:57:35,957 INFO L78 Accepts]: Start accepts. Automaton has 10287 states and 14237 transitions. Word has length 111 [2020-10-29 12:57:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:35,957 INFO L481 AbstractCegarLoop]: Abstraction has 10287 states and 14237 transitions. [2020-10-29 12:57:35,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:57:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 10287 states and 14237 transitions. [2020-10-29 12:57:35,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 12:57:35,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:35,962 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] [2020-10-29 12:57:35,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:57:35,962 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:35,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1774457477, now seen corresponding path program 1 times [2020-10-29 12:57:35,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:35,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699954558] [2020-10-29 12:57:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:36,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:36,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:38,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:38,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:57:38,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:57:38,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2005 [2020-10-29 12:57:38,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:38,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:57:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:57:38,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:38,346 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:57:38,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:38,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:38,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:38,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:57:38,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:38,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:38,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:38,401 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 12:57:38,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699954558] [2020-10-29 12:57:38,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:38,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:38,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714943811] [2020-10-29 12:57:38,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:38,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:38,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:38,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:38,403 INFO L87 Difference]: Start difference. First operand 10287 states and 14237 transitions. Second operand 5 states. [2020-10-29 12:57:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:40,592 INFO L93 Difference]: Finished difference Result 18467 states and 25606 transitions. [2020-10-29 12:57:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:57:40,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-29 12:57:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:40,600 INFO L225 Difference]: With dead ends: 18467 [2020-10-29 12:57:40,600 INFO L226 Difference]: Without dead ends: 8483 [2020-10-29 12:57:40,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8483 states. [2020-10-29 12:57:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8483 to 8483. [2020-10-29 12:57:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8483 states. [2020-10-29 12:57:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8483 states to 8483 states and 11691 transitions. [2020-10-29 12:57:41,779 INFO L78 Accepts]: Start accepts. Automaton has 8483 states and 11691 transitions. Word has length 111 [2020-10-29 12:57:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:41,780 INFO L481 AbstractCegarLoop]: Abstraction has 8483 states and 11691 transitions. [2020-10-29 12:57:41,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 8483 states and 11691 transitions. [2020-10-29 12:57:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 12:57:41,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:41,784 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] [2020-10-29 12:57:41,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:57:41,784 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:41,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1079876441, now seen corresponding path program 1 times [2020-10-29 12:57:41,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:41,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083355245] [2020-10-29 12:57:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:41,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:41,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:42,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:42,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 12:57:42,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:57:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-29 12:57:42,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:42,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 12:57:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:57:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:42,799 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:57:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:42,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:42,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:42,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:57:42,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:42,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:42,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:42,842 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 12:57:42,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083355245] [2020-10-29 12:57:42,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:42,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:42,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365592866] [2020-10-29 12:57:42,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:42,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:42,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:42,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:42,849 INFO L87 Difference]: Start difference. First operand 8483 states and 11691 transitions. Second operand 5 states. [2020-10-29 12:57:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:44,770 INFO L93 Difference]: Finished difference Result 12016 states and 16550 transitions. [2020-10-29 12:57:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:57:44,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-29 12:57:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:44,776 INFO L225 Difference]: With dead ends: 12016 [2020-10-29 12:57:44,777 INFO L226 Difference]: Without dead ends: 7360 [2020-10-29 12:57:44,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2020-10-29 12:57:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 7360. [2020-10-29 12:57:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7360 states. [2020-10-29 12:57:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7360 states to 7360 states and 10119 transitions. [2020-10-29 12:57:45,733 INFO L78 Accepts]: Start accepts. Automaton has 7360 states and 10119 transitions. Word has length 113 [2020-10-29 12:57:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:45,733 INFO L481 AbstractCegarLoop]: Abstraction has 7360 states and 10119 transitions. [2020-10-29 12:57:45,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:45,733 INFO L276 IsEmpty]: Start isEmpty. Operand 7360 states and 10119 transitions. [2020-10-29 12:57:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 12:57:45,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:45,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:57:45,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:57:45,737 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:45,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1482394508, now seen corresponding path program 1 times [2020-10-29 12:57:45,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:45,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485301164] [2020-10-29 12:57:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 12:57:45,775 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 12:57:45,775 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 12:57:45,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:57:45,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:57:45 BoogieIcfgContainer [2020-10-29 12:57:45,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 12:57:45,823 INFO L168 Benchmark]: Toolchain (without parser) took 143765.82 ms. Allocated memory was 162.5 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 135.6 MB in the beginning and 973.9 MB in the end (delta: -838.2 MB). Peak memory consumption was 920.3 MB. Max. memory is 8.0 GB. [2020-10-29 12:57:45,824 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 162.5 MB. Free memory is still 134.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 12:57:45,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.12 ms. Allocated memory is still 162.5 MB. Free memory was 134.9 MB in the beginning and 111.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-29 12:57:45,825 INFO L168 Benchmark]: Boogie Preprocessor took 88.37 ms. Allocated memory is still 162.5 MB. Free memory was 111.8 MB in the beginning and 108.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 12:57:45,827 INFO L168 Benchmark]: RCFGBuilder took 1384.75 ms. Allocated memory is still 162.5 MB. Free memory was 108.1 MB in the beginning and 59.0 MB in the end (delta: 49.1 MB). Peak memory consumption was 48.8 MB. Max. memory is 8.0 GB. [2020-10-29 12:57:45,827 INFO L168 Benchmark]: TraceAbstraction took 141634.21 ms. Allocated memory was 162.5 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 59.0 MB in the beginning and 973.9 MB in the end (delta: -914.8 MB). Peak memory consumption was 843.1 MB. Max. memory is 8.0 GB. [2020-10-29 12:57:45,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 162.5 MB. Free memory is still 134.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 646.12 ms. Allocated memory is still 162.5 MB. Free memory was 134.9 MB in the beginning and 111.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.37 ms. Allocated memory is still 162.5 MB. Free memory was 111.8 MB in the beginning and 108.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1384.75 ms. Allocated memory is still 162.5 MB. Free memory was 108.1 MB in the beginning and 59.0 MB in the end (delta: 49.1 MB). Peak memory consumption was 48.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 141634.21 ms. Allocated memory was 162.5 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 59.0 MB in the beginning and 973.9 MB in the end (delta: -914.8 MB). Peak memory consumption was 843.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] char id2 = '\x0'; [L50] unsigned char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1142; [L71] int __return_1270; [L72] int __return_1696; [L73] int __return_1389; [L74] int __return_1499; [L77] int main__c1; [L78] int main__i2; [L79] main__c1 = 0 [L80] ep12 = __VERIFIER_nondet_bool() [L81] ep13 = __VERIFIER_nondet_bool() [L82] ep21 = __VERIFIER_nondet_bool() [L83] ep23 = __VERIFIER_nondet_bool() [L84] ep31 = __VERIFIER_nondet_bool() [L85] ep32 = __VERIFIER_nondet_bool() [L86] id1 = __VERIFIER_nondet_char() [L87] r1 = __VERIFIER_nondet_uchar() [L88] st1 = __VERIFIER_nondet_char() [L89] nl1 = __VERIFIER_nondet_char() [L90] m1 = __VERIFIER_nondet_char() [L91] max1 = __VERIFIER_nondet_char() [L92] mode1 = __VERIFIER_nondet_bool() [L93] id2 = __VERIFIER_nondet_char() [L94] r2 = __VERIFIER_nondet_uchar() [L95] st2 = __VERIFIER_nondet_char() [L96] nl2 = __VERIFIER_nondet_char() [L97] m2 = __VERIFIER_nondet_char() [L98] max2 = __VERIFIER_nondet_char() [L99] mode2 = __VERIFIER_nondet_bool() [L100] id3 = __VERIFIER_nondet_char() [L101] r3 = __VERIFIER_nondet_uchar() [L102] st3 = __VERIFIER_nondet_char() [L103] nl3 = __VERIFIER_nondet_char() [L104] m3 = __VERIFIER_nondet_char() [L105] max3 = __VERIFIER_nondet_char() [L106] mode3 = __VERIFIER_nondet_bool() [L108] _Bool init__r121; [L109] _Bool init__r131; [L110] _Bool init__r211; [L111] _Bool init__r231; [L112] _Bool init__r311; [L113] _Bool init__r321; [L114] _Bool init__r122; [L115] int init__tmp; [L116] _Bool init__r132; [L117] int init__tmp___0; [L118] _Bool init__r212; [L119] int init__tmp___1; [L120] _Bool init__r232; [L121] int init__tmp___2; [L122] _Bool init__r312; [L123] int init__tmp___3; [L124] _Bool init__r322; [L125] int init__tmp___4; [L126] int init__tmp___5; [L127] init__r121 = ep12 [L128] init__r131 = ep13 [L129] init__r211 = ep21 [L130] init__r231 = ep23 [L131] init__r311 = ep31 [L132] init__r321 = ep32 [L133] COND FALSE !(!(init__r121 == 0)) [L1835] COND TRUE !(init__r131 == 0) [L1837] COND TRUE !(ep32 == 0) [L1839] init__tmp = 1 [L137] init__r122 = (_Bool)init__tmp [L138] COND TRUE !(init__r131 == 0) [L140] init__tmp___0 = 1 [L142] init__r132 = (_Bool)init__tmp___0 [L143] COND TRUE !(init__r211 == 0) [L145] init__tmp___1 = 1 [L147] init__r212 = (_Bool)init__tmp___1 [L148] COND FALSE !(!(init__r231 == 0)) [L1766] COND TRUE !(init__r211 == 0) [L1768] COND TRUE !(ep13 == 0) [L1770] init__tmp___2 = 1 [L152] init__r232 = (_Bool)init__tmp___2 [L153] COND FALSE !(!(init__r311 == 0)) [L1743] COND TRUE !(init__r321 == 0) [L1745] COND TRUE !(ep21 == 0) [L1747] init__tmp___3 = 1 [L157] init__r312 = (_Bool)init__tmp___3 [L158] COND TRUE !(init__r321 == 0) [L160] init__tmp___4 = 1 [L162] init__r322 = (_Bool)init__tmp___4 [L163] COND TRUE ((int)id1) != ((int)id2) [L165] COND TRUE ((int)id1) != ((int)id3) [L167] COND TRUE ((int)id2) != ((int)id3) [L169] COND TRUE ((int)id1) >= 0 [L171] COND TRUE ((int)id2) >= 0 [L173] COND TRUE ((int)id3) >= 0 [L175] COND TRUE ((int)r1) == 0 [L177] COND TRUE ((int)r2) == 0 [L179] COND TRUE ((int)r3) == 0 [L181] COND TRUE !(init__r122 == 0) [L183] COND TRUE !(init__r132 == 0) [L185] COND TRUE !(init__r212 == 0) [L187] COND TRUE !(init__r232 == 0) [L189] COND TRUE !(init__r312 == 0) [L191] COND TRUE !(init__r322 == 0) [L193] COND TRUE ((int)max1) == ((int)id1) [L195] COND TRUE ((int)max2) == ((int)id2) [L197] COND TRUE ((int)max3) == ((int)id3) [L199] COND TRUE ((int)st1) == 0 [L201] COND TRUE ((int)st2) == 0 [L203] COND TRUE ((int)st3) == 0 [L205] COND TRUE ((int)nl1) == 0 [L207] COND TRUE ((int)nl2) == 0 [L209] COND TRUE ((int)nl3) == 0 [L211] COND TRUE ((int)mode1) == 0 [L213] COND TRUE ((int)mode2) == 0 [L215] COND TRUE ((int)mode3) == 0 [L217] init__tmp___5 = 1 [L218] __return_1142 = init__tmp___5 [L219] main__i2 = __return_1142 [L220] COND TRUE main__i2 != 0 [L222] p12_old = nomsg [L223] p12_new = nomsg [L224] p13_old = nomsg [L225] p13_new = nomsg [L226] p21_old = nomsg [L227] p21_new = nomsg [L228] p23_old = nomsg [L229] p23_new = nomsg [L230] p31_old = nomsg [L231] p31_new = nomsg [L232] p32_old = nomsg [L233] p32_new = nomsg [L234] main__i2 = 0 [L236] COND FALSE !(!(mode1 == 0)) [L242] COND TRUE ((int)r1) < 2 [L244] COND FALSE !(!(ep12 == 0)) [L255] COND TRUE !(ep13 == 0) [L257] int node1____CPAchecker_TMP_1; [L258] COND TRUE max1 != nomsg [L260] COND TRUE p13_new == nomsg [L262] node1____CPAchecker_TMP_1 = max1 [L264] p13_new = node1____CPAchecker_TMP_1 [L266] mode1 = 1 [L268] COND FALSE !(!(mode2 == 0)) [L274] COND TRUE ((int)r2) < 2 [L276] COND TRUE !(ep21 == 0) [L278] int node2____CPAchecker_TMP_0; [L279] COND TRUE max2 != nomsg [L281] COND TRUE p21_new == nomsg [L283] node2____CPAchecker_TMP_0 = max2 [L285] p21_new = node2____CPAchecker_TMP_0 [L287] COND FALSE !(!(ep23 == 0)) [L298] mode2 = 1 [L300] COND FALSE !(!(mode3 == 0)) [L306] COND TRUE ((int)r3) < 2 [L308] COND FALSE !(!(ep31 == 0)) [L319] COND TRUE !(ep32 == 0) [L321] int node3____CPAchecker_TMP_1; [L322] COND TRUE max3 != nomsg [L324] COND TRUE p32_new == nomsg [L326] node3____CPAchecker_TMP_1 = max3 [L328] p32_new = node3____CPAchecker_TMP_1 [L330] mode3 = 1 [L331] p12_old = p12_new [L332] p12_new = nomsg [L333] p13_old = p13_new [L334] p13_new = nomsg [L335] p21_old = p21_new [L336] p21_new = nomsg [L337] p23_old = p23_new [L338] p23_new = nomsg [L339] p31_old = p31_new [L340] p31_new = nomsg [L341] p32_old = p32_new [L342] p32_new = nomsg [L344] int check__tmp; [L345] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L347] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L349] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L351] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L353] COND FALSE !(((int)r1) >= 2) [L359] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L361] COND TRUE ((int)r1) < 2 [L363] COND FALSE !(((int)r1) >= 2) [L369] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L371] COND TRUE ((int)r1) < 2 [L373] check__tmp = 1 [L374] __return_1270 = check__tmp [L375] main__c1 = __return_1270 [L377] _Bool __tmp_1; [L378] __tmp_1 = main__c1 [L379] _Bool assert__arg; [L380] assert__arg = __tmp_1 [L381] COND FALSE !(assert__arg == 0) [L388] COND TRUE !(mode1 == 0) [L390] COND FALSE !(r1 == 255) [L396] r1 = r1 + 1 [L397] COND TRUE !(ep21 == 0) [L399] m1 = p21_old [L400] p21_old = nomsg [L401] COND FALSE !(((int)m1) > ((int)max1)) [L405] COND FALSE !(!(ep31 == 0)) [L413] COND TRUE ((int)r1) == 1 [L415] COND TRUE ((int)max1) == ((int)id1) [L417] st1 = 1 [L418] mode1 = 0 [L420] COND TRUE !(mode2 == 0) [L422] COND FALSE !(r2 == 255) [L428] r2 = r2 + 1 [L429] COND FALSE !(!(ep12 == 0)) [L437] COND TRUE !(ep32 == 0) [L439] m2 = p32_old [L440] p32_old = nomsg [L441] COND TRUE ((int)m2) > ((int)max2) [L443] max2 = m2 [L445] COND FALSE !(((int)r2) == 2) [L451] mode2 = 0 [L453] COND TRUE !(mode3 == 0) [L455] COND FALSE !(r3 == 255) [L461] r3 = r3 + 1 [L462] COND TRUE !(ep13 == 0) [L464] m3 = p13_old [L465] p13_old = nomsg [L466] COND FALSE !(((int)m3) > ((int)max3)) [L470] COND FALSE !(!(ep23 == 0)) [L478] COND FALSE !(((int)r3) == 2) [L484] mode3 = 0 [L485] p12_old = p12_new [L486] p12_new = nomsg [L487] p13_old = p13_new [L488] p13_new = nomsg [L489] p21_old = p21_new [L490] p21_new = nomsg [L491] p23_old = p23_new [L492] p23_new = nomsg [L493] p31_old = p31_new [L494] p31_new = nomsg [L495] p32_old = p32_new [L496] p32_new = nomsg [L498] int check__tmp; [L499] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L501] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L503] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L505] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L507] COND FALSE !(((int)r1) >= 2) [L513] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L519] check__tmp = 0 [L520] __return_1696 = check__tmp [L521] main__c1 = __return_1696 [L523] _Bool __tmp_2; [L524] __tmp_2 = main__c1 [L525] _Bool assert__arg; [L526] assert__arg = __tmp_2 [L527] COND TRUE assert__arg == 0 [L529] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 141.5s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 45.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7872 SDtfs, 16354 SDslu, 9664 SDs, 0 SdLazy, 9670 SolverSat, 655 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 12.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10838occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 39783 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 83.7s InterpolantComputationTime, 1913 NumberOfCodeBlocks, 1913 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1781 ConstructedInterpolants, 0 QuantifiedInterpolants, 1244623 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...