/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/eca-rers2012/Problem12_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:01:00,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:01:00,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:01:00,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:01:00,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:01:00,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:01:00,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:01:00,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:01:00,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:01:00,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:01:00,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:01:00,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:01:00,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:01:00,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:01:00,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:01:00,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:01:00,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:01:00,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:01:00,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:01:00,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:01:00,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:01:00,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:01:00,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:01:00,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:01:00,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:01:00,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:01:00,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:01:00,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:01:00,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:01:00,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:01:00,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:01:00,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:01:00,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:01:00,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:01:00,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:01:00,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:01:00,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:01:00,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:01:00,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:01:00,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:01:00,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:01:00,544 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 07:01:00,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:01:00,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:01:00,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:01:00,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:01:00,575 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:01:00,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:01:00,576 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:01:00,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:01:00,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:01:00,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:01:00,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:01:00,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:01:00,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:01:00,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:01:00,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:01:00,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:01:00,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:01:00,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:01:00,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:01:00,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:01:00,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:01:00,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:01:00,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:01:00,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:01:00,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:01:00,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:01:00,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:01:00,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:01:00,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:01:00,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:01:00,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:01:01,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:01:01,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:01:01,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:01:01,029 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:01:01,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2020-10-29 07:01:01,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95097d965/0d3c235263ab4d9d8aad4a2b363a3e60/FLAG9f5b2d5d0 [2020-10-29 07:01:02,278 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:01:02,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2020-10-29 07:01:02,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95097d965/0d3c235263ab4d9d8aad4a2b363a3e60/FLAG9f5b2d5d0 [2020-10-29 07:01:02,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95097d965/0d3c235263ab4d9d8aad4a2b363a3e60 [2020-10-29 07:01:02,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:01:02,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:01:02,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:01:02,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:01:02,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:01:02,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:01:02" (1/1) ... [2020-10-29 07:01:02,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e713d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:02, skipping insertion in model container [2020-10-29 07:01:02,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:01:02" (1/1) ... [2020-10-29 07:01:02,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:01:02,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:01:04,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:01:04,435 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:01:05,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:01:05,112 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:01:05,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:05 WrapperNode [2020-10-29 07:01:05,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:01:05,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:01:05,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:01:05,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:01:05,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:05" (1/1) ... [2020-10-29 07:01:05,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:05" (1/1) ... [2020-10-29 07:01:05,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:05" (1/1) ... [2020-10-29 07:01:05,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:05" (1/1) ... [2020-10-29 07:01:05,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:05" (1/1) ... [2020-10-29 07:01:05,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:05" (1/1) ... [2020-10-29 07:01:05,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:05" (1/1) ... [2020-10-29 07:01:05,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:01:05,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:01:05,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:01:05,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:01:05,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:05" (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 07:01:05,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:01:05,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:01:05,621 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:01:05,621 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:01:05,622 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:01:05,622 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:01:05,622 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:01:05,622 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:01:05,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:01:05,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:01:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:01:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:01:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:01:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:01:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:01:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:01:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:01:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:01:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:01:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:01:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:01:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:01:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:01:05,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:01:05,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:01:10,758 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:01:10,759 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:01:10,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:01:10 BoogieIcfgContainer [2020-10-29 07:01:10,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:01:10,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:01:10,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:01:10,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:01:10,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:01:02" (1/3) ... [2020-10-29 07:01:10,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21283722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:01:10, skipping insertion in model container [2020-10-29 07:01:10,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:05" (2/3) ... [2020-10-29 07:01:10,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21283722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:01:10, skipping insertion in model container [2020-10-29 07:01:10,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:01:10" (3/3) ... [2020-10-29 07:01:10,778 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label30.c [2020-10-29 07:01:10,790 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:01:10,797 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:01:10,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:01:10,858 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:01:10,858 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:01:10,859 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:01:10,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:01:10,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:01:10,859 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:01:10,859 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:01:10,859 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:01:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:01:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 07:01:10,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:10,914 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] [2020-10-29 07:01:10,915 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1762416860, now seen corresponding path program 1 times [2020-10-29 07:01:10,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:10,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938601193] [2020-10-29 07:01:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:11,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:11,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 07:01:11,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:11,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-29 07:01:11,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:11,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:01:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 07:01:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:01:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:11,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:11,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:11,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:01:11,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:11,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:11,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:11,892 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 07:01:11,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938601193] [2020-10-29 07:01:11,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:01:11,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:01:11,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138905666] [2020-10-29 07:01:11,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:01:11,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:11,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:01:11,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:01:11,920 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 07:01:23,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:23,011 INFO L93 Difference]: Finished difference Result 2476 states and 4741 transitions. [2020-10-29 07:01:23,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:01:23,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-29 07:01:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:23,048 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 07:01:23,048 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:01:23,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:01:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:01:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1556. [2020-10-29 07:01:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-29 07:01:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2404 transitions. [2020-10-29 07:01:23,250 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2404 transitions. Word has length 32 [2020-10-29 07:01:23,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:23,251 INFO L481 AbstractCegarLoop]: Abstraction has 1556 states and 2404 transitions. [2020-10-29 07:01:23,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:01:23,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2404 transitions. [2020-10-29 07:01:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 07:01:23,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:23,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:23,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:01:23,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:23,265 INFO L82 PathProgramCache]: Analyzing trace with hash 712691802, now seen corresponding path program 1 times [2020-10-29 07:01:23,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:23,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626496370] [2020-10-29 07:01:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:24,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:24,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:01:24,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:01:24,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-29 07:01:24,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:24,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:01:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:01:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:24,384 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:01:24,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:24,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:24,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:24,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:01:24,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:24,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:24,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:01:24,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:24,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:24,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:24,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:01:24,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:01:24,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:24,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:01:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:01:24,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626496370] [2020-10-29 07:01:24,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:24,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:01:24,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24922528] [2020-10-29 07:01:24,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:01:24,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:24,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:01:24,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:01:24,731 INFO L87 Difference]: Start difference. First operand 1556 states and 2404 transitions. Second operand 6 states. [2020-10-29 07:01:37,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:37,054 INFO L93 Difference]: Finished difference Result 4721 states and 7349 transitions. [2020-10-29 07:01:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:01:37,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-29 07:01:37,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:37,077 INFO L225 Difference]: With dead ends: 4721 [2020-10-29 07:01:37,078 INFO L226 Difference]: Without dead ends: 3171 [2020-10-29 07:01:37,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:01:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2020-10-29 07:01:37,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3150. [2020-10-29 07:01:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3150 states. [2020-10-29 07:01:37,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4314 transitions. [2020-10-29 07:01:37,187 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4314 transitions. Word has length 107 [2020-10-29 07:01:37,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:37,187 INFO L481 AbstractCegarLoop]: Abstraction has 3150 states and 4314 transitions. [2020-10-29 07:01:37,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:01:37,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4314 transitions. [2020-10-29 07:01:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 07:01:37,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:37,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:37,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:01:37,191 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:37,192 INFO L82 PathProgramCache]: Analyzing trace with hash 2083990414, now seen corresponding path program 1 times [2020-10-29 07:01:37,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:37,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709354580] [2020-10-29 07:01:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:38,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:38,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:01:38,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:01:38,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-29 07:01:38,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:38,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:01:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:01:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:38,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:38,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:38,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:38,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:38,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:01:38,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:38,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:38,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:38,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:38,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:38,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:38,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:38,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:01:38,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:38,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:01:38,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:38,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:01:38,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:01:38,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709354580] [2020-10-29 07:01:38,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:01:38,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:01:38,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630131106] [2020-10-29 07:01:38,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:01:38,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:38,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:01:38,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:01:38,702 INFO L87 Difference]: Start difference. First operand 3150 states and 4314 transitions. Second operand 8 states. [2020-10-29 07:02:00,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:00,157 INFO L93 Difference]: Finished difference Result 12809 states and 18262 transitions. [2020-10-29 07:02:00,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:02:00,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-29 07:02:00,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:00,216 INFO L225 Difference]: With dead ends: 12809 [2020-10-29 07:02:00,216 INFO L226 Difference]: Without dead ends: 9665 [2020-10-29 07:02:00,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:02:00,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9665 states. [2020-10-29 07:02:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9665 to 9628. [2020-10-29 07:02:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9628 states. [2020-10-29 07:02:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9628 states to 9628 states and 12691 transitions. [2020-10-29 07:02:00,605 INFO L78 Accepts]: Start accepts. Automaton has 9628 states and 12691 transitions. Word has length 113 [2020-10-29 07:02:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:00,610 INFO L481 AbstractCegarLoop]: Abstraction has 9628 states and 12691 transitions. [2020-10-29 07:02:00,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:02:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 9628 states and 12691 transitions. [2020-10-29 07:02:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 07:02:00,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:00,620 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:00,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:02:00,621 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:00,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:00,623 INFO L82 PathProgramCache]: Analyzing trace with hash 854471430, now seen corresponding path program 1 times [2020-10-29 07:02:00,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:00,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17365044] [2020-10-29 07:02:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:01,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:01,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:02:01,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:02:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-29 07:02:01,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:01,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:02:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:02:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:02:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:01,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:01,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:01,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:01,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:02:01,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:01,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:02:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:01,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:01,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:01,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:02:01,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:01,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 07:02:01,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:01,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:01,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:01,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:02:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:02:01,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17365044] [2020-10-29 07:02:01,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:02:01,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:02:01,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418621339] [2020-10-29 07:02:01,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:02:01,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:01,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:02:01,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:02:01,906 INFO L87 Difference]: Start difference. First operand 9628 states and 12691 transitions. Second operand 7 states. [2020-10-29 07:02:16,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:16,854 INFO L93 Difference]: Finished difference Result 29352 states and 40126 transitions. [2020-10-29 07:02:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:02:16,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-29 07:02:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:16,952 INFO L225 Difference]: With dead ends: 29352 [2020-10-29 07:02:16,953 INFO L226 Difference]: Without dead ends: 19730 [2020-10-29 07:02:16,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:02:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19730 states. [2020-10-29 07:02:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19730 to 16472. [2020-10-29 07:02:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16472 states. [2020-10-29 07:02:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16472 states to 16472 states and 21597 transitions. [2020-10-29 07:02:17,576 INFO L78 Accepts]: Start accepts. Automaton has 16472 states and 21597 transitions. Word has length 117 [2020-10-29 07:02:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:17,578 INFO L481 AbstractCegarLoop]: Abstraction has 16472 states and 21597 transitions. [2020-10-29 07:02:17,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:02:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 16472 states and 21597 transitions. [2020-10-29 07:02:17,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 07:02:17,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:17,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:17,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:02:17,582 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:17,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:17,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1920699404, now seen corresponding path program 1 times [2020-10-29 07:02:17,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:17,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858095759] [2020-10-29 07:02:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:17,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:19,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:19,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 07:02:19,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:02:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1999 [2020-10-29 07:02:19,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:19,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:02:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:02:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:02:19,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:19,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:19,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:19,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:19,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:02:19,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:19,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:02:19,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:20,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:20,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:20,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:02:20,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-29 07:02:20,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:20,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:02:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:02:20,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858095759] [2020-10-29 07:02:20,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:02:20,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:02:20,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997861895] [2020-10-29 07:02:20,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:02:20,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:20,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:02:20,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:02:20,715 INFO L87 Difference]: Start difference. First operand 16472 states and 21597 transitions. Second operand 7 states. [2020-10-29 07:02:34,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:34,256 INFO L93 Difference]: Finished difference Result 36513 states and 47598 transitions. [2020-10-29 07:02:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:02:34,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-29 07:02:34,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:34,325 INFO L225 Difference]: With dead ends: 36513 [2020-10-29 07:02:34,325 INFO L226 Difference]: Without dead ends: 20047 [2020-10-29 07:02:34,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:02:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20047 states. [2020-10-29 07:02:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20047 to 19782. [2020-10-29 07:02:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19782 states. [2020-10-29 07:02:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19782 states to 19782 states and 25379 transitions. [2020-10-29 07:02:34,893 INFO L78 Accepts]: Start accepts. Automaton has 19782 states and 25379 transitions. Word has length 180 [2020-10-29 07:02:34,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:34,894 INFO L481 AbstractCegarLoop]: Abstraction has 19782 states and 25379 transitions. [2020-10-29 07:02:34,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:02:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 19782 states and 25379 transitions. [2020-10-29 07:02:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 07:02:34,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:34,898 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:34,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:02:34,898 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:34,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:34,899 INFO L82 PathProgramCache]: Analyzing trace with hash -162142270, now seen corresponding path program 1 times [2020-10-29 07:02:34,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:34,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348340138] [2020-10-29 07:02:34,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:35,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:35,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:36,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:36,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 07:02:36,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:02:36,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1890 [2020-10-29 07:02:36,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:36,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:36,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:36,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:02:36,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:02:36,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:37,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:37,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:37,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:37,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:37,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:37,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:02:37,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:37,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:02:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:02:37,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:37,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:37,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:37,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:37,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:02:37,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:02:37,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:37,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:02:37,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:37,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:02:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:37,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:37,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:37,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:02:37,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-29 07:02:37,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:37,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:02:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:02:37,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348340138] [2020-10-29 07:02:37,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:37,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:02:37,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179579037] [2020-10-29 07:02:37,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:02:37,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:37,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:02:37,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:02:37,654 INFO L87 Difference]: Start difference. First operand 19782 states and 25379 transitions. Second operand 8 states. [2020-10-29 07:03:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:02,631 INFO L93 Difference]: Finished difference Result 47817 states and 60803 transitions. [2020-10-29 07:03:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:03:02,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 215 [2020-10-29 07:03:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:02,720 INFO L225 Difference]: With dead ends: 47817 [2020-10-29 07:03:02,720 INFO L226 Difference]: Without dead ends: 28808 [2020-10-29 07:03:02,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:03:02,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28808 states. [2020-10-29 07:03:03,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28808 to 27054. [2020-10-29 07:03:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27054 states. [2020-10-29 07:03:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27054 states to 27054 states and 31587 transitions. [2020-10-29 07:03:03,346 INFO L78 Accepts]: Start accepts. Automaton has 27054 states and 31587 transitions. Word has length 215 [2020-10-29 07:03:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:03,347 INFO L481 AbstractCegarLoop]: Abstraction has 27054 states and 31587 transitions. [2020-10-29 07:03:03,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:03:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 27054 states and 31587 transitions. [2020-10-29 07:03:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 07:03:03,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:03,351 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:03,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:03:03,351 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:03,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1375816842, now seen corresponding path program 1 times [2020-10-29 07:03:03,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:03,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674636838] [2020-10-29 07:03:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:04,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:04,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:04,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-29 07:03:04,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:03:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-10-29 07:03:04,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:04,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:03:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 07:03:04,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:04,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:04,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:04,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:04,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:04,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:03:04,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:04,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:03:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:03:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:04,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:04,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:04,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:03:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:03:04,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:04,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:03:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:04,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:03:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:04,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:05,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:05,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 07:03:05,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:05,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 07:03:05,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:05,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:03:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 07:03:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:03:05,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674636838] [2020-10-29 07:03:05,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:03:05,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:03:05,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722103129] [2020-10-29 07:03:05,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:03:05,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:05,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:03:05,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:03:05,291 INFO L87 Difference]: Start difference. First operand 27054 states and 31587 transitions. Second operand 7 states. [2020-10-29 07:03:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:21,623 INFO L93 Difference]: Finished difference Result 66864 states and 80475 transitions. [2020-10-29 07:03:21,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:03:21,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-29 07:03:21,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:21,810 INFO L225 Difference]: With dead ends: 66864 [2020-10-29 07:03:21,810 INFO L226 Difference]: Without dead ends: 36276 [2020-10-29 07:03:21,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:03:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36276 states. [2020-10-29 07:03:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36276 to 34212. [2020-10-29 07:03:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34212 states. [2020-10-29 07:03:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34212 states to 34212 states and 38622 transitions. [2020-10-29 07:03:22,489 INFO L78 Accepts]: Start accepts. Automaton has 34212 states and 38622 transitions. Word has length 221 [2020-10-29 07:03:22,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:22,490 INFO L481 AbstractCegarLoop]: Abstraction has 34212 states and 38622 transitions. [2020-10-29 07:03:22,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:03:22,490 INFO L276 IsEmpty]: Start isEmpty. Operand 34212 states and 38622 transitions. [2020-10-29 07:03:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-29 07:03:22,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:22,495 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:22,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:03:22,495 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:22,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:22,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2020782036, now seen corresponding path program 1 times [2020-10-29 07:03:22,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:22,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646005231] [2020-10-29 07:03:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:22,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:23,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:25,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:25,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-29 07:03:25,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:03:25,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2576 [2020-10-29 07:03:25,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:25,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:03:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 07:03:25,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:25,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:25,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:25,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:25,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:25,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:03:25,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:25,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:03:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:03:25,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:25,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:25,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:03:25,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 07:03:25,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:25,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:03:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:25,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:03:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:25,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:25,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:03:25,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 07:03:25,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:25,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:03:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 07:03:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:03:26,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646005231] [2020-10-29 07:03:26,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:03:26,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:03:26,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692512688] [2020-10-29 07:03:26,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:03:26,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:26,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:03:26,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:03:26,042 INFO L87 Difference]: Start difference. First operand 34212 states and 38622 transitions. Second operand 7 states. [2020-10-29 07:03:43,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:43,461 INFO L93 Difference]: Finished difference Result 84243 states and 97345 transitions. [2020-10-29 07:03:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:03:43,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-29 07:03:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:43,601 INFO L225 Difference]: With dead ends: 84243 [2020-10-29 07:03:43,601 INFO L226 Difference]: Without dead ends: 50024 [2020-10-29 07:03:43,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:03:43,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50024 states. [2020-10-29 07:03:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50024 to 48863. [2020-10-29 07:03:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48863 states. [2020-10-29 07:03:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48863 states to 48863 states and 56191 transitions. [2020-10-29 07:03:45,161 INFO L78 Accepts]: Start accepts. Automaton has 48863 states and 56191 transitions. Word has length 294 [2020-10-29 07:03:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:45,162 INFO L481 AbstractCegarLoop]: Abstraction has 48863 states and 56191 transitions. [2020-10-29 07:03:45,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:03:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 48863 states and 56191 transitions. [2020-10-29 07:03:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-29 07:03:45,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:45,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:45,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:03:45,172 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:45,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:45,173 INFO L82 PathProgramCache]: Analyzing trace with hash -542301348, now seen corresponding path program 1 times [2020-10-29 07:03:45,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:45,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988486341] [2020-10-29 07:03:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:45,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:47,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:47,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-29 07:03:47,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:03:47,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2048 [2020-10-29 07:03:47,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:47,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:03:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:03:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:03:47,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:47,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:47,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:47,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:47,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:47,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:03:47,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:47,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:03:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:03:47,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:47,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:47,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:47,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:47,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:03:47,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:47,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 07:03:47,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:47,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:03:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:47,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:03:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:47,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:47,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:47,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:03:47,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 07:03:47,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:47,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:03:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 07:03:47,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 136 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:03:48,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988486341] [2020-10-29 07:03:48,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:03:48,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:03:48,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099680365] [2020-10-29 07:03:48,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:03:48,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:48,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:03:48,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:03:48,172 INFO L87 Difference]: Start difference. First operand 48863 states and 56191 transitions. Second operand 6 states. [2020-10-29 07:04:05,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:04:05,556 INFO L93 Difference]: Finished difference Result 112274 states and 131164 transitions. [2020-10-29 07:04:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:04:05,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 298 [2020-10-29 07:04:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:04:05,754 INFO L225 Difference]: With dead ends: 112274 [2020-10-29 07:04:05,754 INFO L226 Difference]: Without dead ends: 63412 [2020-10-29 07:04:05,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:04:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63412 states. [2020-10-29 07:04:07,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63412 to 63218. [2020-10-29 07:04:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63218 states. [2020-10-29 07:04:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63218 states to 63218 states and 72346 transitions. [2020-10-29 07:04:07,592 INFO L78 Accepts]: Start accepts. Automaton has 63218 states and 72346 transitions. Word has length 298 [2020-10-29 07:04:07,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:04:07,593 INFO L481 AbstractCegarLoop]: Abstraction has 63218 states and 72346 transitions. [2020-10-29 07:04:07,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:04:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 63218 states and 72346 transitions. [2020-10-29 07:04:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-29 07:04:07,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:04:07,605 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:07,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:04:07,605 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:04:07,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:04:07,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1556480958, now seen corresponding path program 1 times [2020-10-29 07:04:07,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:04:07,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350819522] [2020-10-29 07:04:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:04:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:07,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:10,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:10,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-29 07:04:10,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:04:10,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2757 [2020-10-29 07:04:10,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:10,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:10,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:04:10,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:04:10,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-29 07:04:10,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:10,732 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:04:10,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:04:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:10,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:10,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:04:10,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:04:10,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:10,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:04:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:04:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:10,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:04:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:10,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:10,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:04:10,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 07:04:10,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:10,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:04:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:11,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:04:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:11,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:11,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:11,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 07:04:11,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:11,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 07:04:11,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:11,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:11,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:04:11,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:04:11,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:04:11,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:11,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-29 07:04:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:11,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:11,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:04:11,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 07:04:11,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:11,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:04:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:04:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:04:11,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 319 proven. 49 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 07:04:11,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350819522] [2020-10-29 07:04:11,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:04:11,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:04:11,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700701686] [2020-10-29 07:04:11,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:04:11,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:04:11,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:04:11,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:04:11,829 INFO L87 Difference]: Start difference. First operand 63218 states and 72346 transitions. Second operand 10 states. [2020-10-29 07:04:48,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:04:48,031 INFO L93 Difference]: Finished difference Result 177778 states and 208795 transitions. [2020-10-29 07:04:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 07:04:48,035 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 393 [2020-10-29 07:04:48,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:04:48,385 INFO L225 Difference]: With dead ends: 177778 [2020-10-29 07:04:48,385 INFO L226 Difference]: Without dead ends: 115333 [2020-10-29 07:04:48,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-29 07:04:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115333 states.