/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/Problem13_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:16:13,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:16:13,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:16:13,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:16:13,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:16:13,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:16:13,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:16:13,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:16:13,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:16:13,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:16:13,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:16:13,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:16:13,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:16:13,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:16:13,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:16:13,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:16:13,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:16:13,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:16:13,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:16:13,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:16:13,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:16:13,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:16:13,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:16:13,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:16:13,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:16:13,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:16:13,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:16:13,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:16:13,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:16:13,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:16:13,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:16:13,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:16:13,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:16:13,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:16:13,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:16:13,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:16:13,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:16:13,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:16:13,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:16:13,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:16:13,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:16:13,547 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 07:16:13,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:16:13,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:16:13,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:16:13,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:16:13,615 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:16:13,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:16:13,615 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:16:13,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:16:13,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:16:13,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:16:13,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:16:13,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:16:13,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:16:13,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:16:13,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:16:13,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:16:13,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:16:13,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:16:13,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:16:13,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:16:13,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:16:13,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:16:13,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:16:13,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:16:13,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:16:13,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:16:13,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:16:13,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:16:13,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:16:13,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:16:14,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:16:14,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:16:14,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:16:14,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:16:14,153 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:16:14,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26.c [2020-10-29 07:16:14,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bb3bb04c/d4ee0e80dd654f0bbd97779f3058eaf2/FLAG8ef424447 [2020-10-29 07:16:15,337 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:16:15,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label26.c [2020-10-29 07:16:15,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bb3bb04c/d4ee0e80dd654f0bbd97779f3058eaf2/FLAG8ef424447 [2020-10-29 07:16:15,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bb3bb04c/d4ee0e80dd654f0bbd97779f3058eaf2 [2020-10-29 07:16:15,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:16:15,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:16:15,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:16:15,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:16:15,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:16:15,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:16:15" (1/1) ... [2020-10-29 07:16:15,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c73d52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:15, skipping insertion in model container [2020-10-29 07:16:15,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:16:15" (1/1) ... [2020-10-29 07:16:15,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:16:15,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:16:17,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:16:17,963 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:16:18,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:16:18,886 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:16:18,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:18 WrapperNode [2020-10-29 07:16:18,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:16:18,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:16:18,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:16:18,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:16:18,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:18" (1/1) ... [2020-10-29 07:16:18,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:18" (1/1) ... [2020-10-29 07:16:19,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:18" (1/1) ... [2020-10-29 07:16:19,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:18" (1/1) ... [2020-10-29 07:16:19,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:18" (1/1) ... [2020-10-29 07:16:19,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:18" (1/1) ... [2020-10-29 07:16:19,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:18" (1/1) ... [2020-10-29 07:16:19,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:16:19,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:16:19,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:16:19,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:16:19,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:18" (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 07:16:19,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:16:19,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:16:19,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:16:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:16:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:16:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:16:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:16:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:16:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:16:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:16:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:16:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:16:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:16:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:16:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:16:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:16:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:16:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:16:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:16:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:16:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:16:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:16:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:16:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:16:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:16:30,525 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:16:30,526 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:16:30,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:16:30 BoogieIcfgContainer [2020-10-29 07:16:30,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:16:30,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:16:30,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:16:30,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:16:30,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:16:15" (1/3) ... [2020-10-29 07:16:30,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446ef6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:16:30, skipping insertion in model container [2020-10-29 07:16:30,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:18" (2/3) ... [2020-10-29 07:16:30,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446ef6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:16:30, skipping insertion in model container [2020-10-29 07:16:30,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:16:30" (3/3) ... [2020-10-29 07:16:30,549 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label26.c [2020-10-29 07:16:30,564 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:16:30,574 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:16:30,591 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:16:30,648 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:16:30,648 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:16:30,648 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:16:30,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:16:30,649 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:16:30,649 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:16:30,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:16:30,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:16:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:16:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 07:16:30,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:30,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:16:30,726 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:30,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:30,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2087975178, now seen corresponding path program 1 times [2020-10-29 07:16:30,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:30,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750215839] [2020-10-29 07:16:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:31,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:31,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 07:16:31,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:31,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-10-29 07:16:31,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:31,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:16:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:16:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 07:16:31,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:16:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:31,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:31,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:31,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:16:31,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:31,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:16:31,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:31,965 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 07:16:31,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750215839] [2020-10-29 07:16:31,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:16:31,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:16:31,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528527783] [2020-10-29 07:16:31,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:16:31,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:31,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:16:31,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:16:31,995 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:16:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:16:48,516 INFO L93 Difference]: Finished difference Result 3123 states and 5754 transitions. [2020-10-29 07:16:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:16:48,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-29 07:16:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:16:48,567 INFO L225 Difference]: With dead ends: 3123 [2020-10-29 07:16:48,568 INFO L226 Difference]: Without dead ends: 1936 [2020-10-29 07:16:48,589 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 07:16:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-10-29 07:16:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1918. [2020-10-29 07:16:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-10-29 07:16:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2936 transitions. [2020-10-29 07:16:48,803 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2936 transitions. Word has length 45 [2020-10-29 07:16:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:16:48,805 INFO L481 AbstractCegarLoop]: Abstraction has 1918 states and 2936 transitions. [2020-10-29 07:16:48,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:16:48,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2936 transitions. [2020-10-29 07:16:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 07:16:48,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:48,822 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, 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] [2020-10-29 07:16:48,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:16:48,823 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:48,825 INFO L82 PathProgramCache]: Analyzing trace with hash 2048771536, now seen corresponding path program 1 times [2020-10-29 07:16:48,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:48,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413105967] [2020-10-29 07:16:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:48,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:50,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:50,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 07:16:50,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:16:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1422 [2020-10-29 07:16:50,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:50,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:16:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:16:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:16:50,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:16:50,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:50,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:50,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:50,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:50,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:50,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:16:50,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:50,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:16:50,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:50,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:16:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:50,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:50,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:16:50,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-29 07:16:50,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:50,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:16:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:16:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:16:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:16:51,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413105967] [2020-10-29 07:16:51,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:16:51,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:16:51,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944498932] [2020-10-29 07:16:51,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:16:51,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:51,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:16:51,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:16:51,075 INFO L87 Difference]: Start difference. First operand 1918 states and 2936 transitions. Second operand 7 states. [2020-10-29 07:17:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:17:23,765 INFO L93 Difference]: Finished difference Result 5598 states and 8647 transitions. [2020-10-29 07:17:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:17:23,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-29 07:17:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:17:23,796 INFO L225 Difference]: With dead ends: 5598 [2020-10-29 07:17:23,796 INFO L226 Difference]: Without dead ends: 3686 [2020-10-29 07:17:23,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:17:23,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2020-10-29 07:17:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3623. [2020-10-29 07:17:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3623 states. [2020-10-29 07:17:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 4991 transitions. [2020-10-29 07:17:23,976 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 4991 transitions. Word has length 121 [2020-10-29 07:17:23,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:17:23,976 INFO L481 AbstractCegarLoop]: Abstraction has 3623 states and 4991 transitions. [2020-10-29 07:17:23,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:17:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 4991 transitions. [2020-10-29 07:17:23,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 07:17:23,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:23,980 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, 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] [2020-10-29 07:17:23,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:17:23,981 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:23,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:23,982 INFO L82 PathProgramCache]: Analyzing trace with hash 2141850163, now seen corresponding path program 1 times [2020-10-29 07:17:23,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:23,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046183875] [2020-10-29 07:17:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:25,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:25,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 07:17:25,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:17:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1576 [2020-10-29 07:17:25,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:25,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:17:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:17:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:25,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:25,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:17:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:25,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:17:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:17:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:26,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:26,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:17:26,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 07:17:26,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:26,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:17:26,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:17:26,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:17:26,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046183875] [2020-10-29 07:17:26,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:17:26,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:17:26,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738556899] [2020-10-29 07:17:26,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:17:26,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:26,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:17:26,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:17:26,333 INFO L87 Difference]: Start difference. First operand 3623 states and 4991 transitions. Second operand 7 states. [2020-10-29 07:17:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:17:56,887 INFO L93 Difference]: Finished difference Result 10891 states and 15381 transitions. [2020-10-29 07:17:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:17:56,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-29 07:17:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:17:56,947 INFO L225 Difference]: With dead ends: 10891 [2020-10-29 07:17:56,947 INFO L226 Difference]: Without dead ends: 7274 [2020-10-29 07:17:56,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:17:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2020-10-29 07:17:57,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7159. [2020-10-29 07:17:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7159 states. [2020-10-29 07:17:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7159 states to 7159 states and 9279 transitions. [2020-10-29 07:17:57,295 INFO L78 Accepts]: Start accepts. Automaton has 7159 states and 9279 transitions. Word has length 135 [2020-10-29 07:17:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:17:57,305 INFO L481 AbstractCegarLoop]: Abstraction has 7159 states and 9279 transitions. [2020-10-29 07:17:57,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:17:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7159 states and 9279 transitions. [2020-10-29 07:17:57,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 07:17:57,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:57,318 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, 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] [2020-10-29 07:17:57,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:17:57,318 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:57,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:57,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1648662411, now seen corresponding path program 1 times [2020-10-29 07:17:57,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:57,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697271345] [2020-10-29 07:17:57,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:57,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:57,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:58,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:59,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:59,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:17:59,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:17:59,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2022 [2020-10-29 07:17:59,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:59,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:59,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:59,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:17:59,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 07:17:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:59,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:59,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:59,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:59,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:59,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:59,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:17:59,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:59,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:59,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:59,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:59,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:17:59,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:59,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:17:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:59,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:59,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:17:59,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-29 07:17:59,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:59,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:17:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:17:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:18:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:18:00,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697271345] [2020-10-29 07:18:00,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:18:00,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:18:00,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554634960] [2020-10-29 07:18:00,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:18:00,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:00,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:18:00,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:18:00,422 INFO L87 Difference]: Start difference. First operand 7159 states and 9279 transitions. Second operand 7 states. [2020-10-29 07:18:00,605 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:18:01,801 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:18:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:23,923 INFO L93 Difference]: Finished difference Result 15426 states and 19875 transitions. [2020-10-29 07:18:23,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:18:23,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-29 07:18:23,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:23,974 INFO L225 Difference]: With dead ends: 15426 [2020-10-29 07:18:23,975 INFO L226 Difference]: Without dead ends: 8273 [2020-10-29 07:18:23,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:18:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8273 states. [2020-10-29 07:18:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8273 to 8062. [2020-10-29 07:18:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8062 states. [2020-10-29 07:18:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8062 states to 8062 states and 10227 transitions. [2020-10-29 07:18:24,238 INFO L78 Accepts]: Start accepts. Automaton has 8062 states and 10227 transitions. Word has length 138 [2020-10-29 07:18:24,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:24,240 INFO L481 AbstractCegarLoop]: Abstraction has 8062 states and 10227 transitions. [2020-10-29 07:18:24,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:18:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 8062 states and 10227 transitions. [2020-10-29 07:18:24,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 07:18:24,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:24,243 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, 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] [2020-10-29 07:18:24,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:18:24,244 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:24,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:24,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1939873266, now seen corresponding path program 1 times [2020-10-29 07:18:24,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:24,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318615977] [2020-10-29 07:18:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:24,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:24,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:25,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:25,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 07:18:25,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:18:25,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 934 [2020-10-29 07:18:25,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:25,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:18:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:18:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:25,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:25,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:25,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:25,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:18:25,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:25,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:25,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:25,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:18:25,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:25,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 07:18:25,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:25,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:25,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:25,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 07:18:25,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:18:25,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318615977] [2020-10-29 07:18:25,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:18:25,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:18:25,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788405081] [2020-10-29 07:18:25,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:18:25,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:25,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:18:25,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:18:25,782 INFO L87 Difference]: Start difference. First operand 8062 states and 10227 transitions. Second operand 6 states. [2020-10-29 07:18:55,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:55,126 INFO L93 Difference]: Finished difference Result 21348 states and 28312 transitions. [2020-10-29 07:18:55,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:18:55,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-10-29 07:18:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:55,200 INFO L225 Difference]: With dead ends: 21348 [2020-10-29 07:18:55,200 INFO L226 Difference]: Without dead ends: 14095 [2020-10-29 07:18:55,223 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 07:18:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14095 states. [2020-10-29 07:18:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14095 to 14025. [2020-10-29 07:18:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14025 states. [2020-10-29 07:18:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14025 states to 14025 states and 18150 transitions. [2020-10-29 07:18:55,649 INFO L78 Accepts]: Start accepts. Automaton has 14025 states and 18150 transitions. Word has length 145 [2020-10-29 07:18:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:55,650 INFO L481 AbstractCegarLoop]: Abstraction has 14025 states and 18150 transitions. [2020-10-29 07:18:55,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:18:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 14025 states and 18150 transitions. [2020-10-29 07:18:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 07:18:55,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:55,657 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 07:18:55,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:18:55,658 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:55,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1760975366, now seen corresponding path program 1 times [2020-10-29 07:18:55,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:55,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288043240] [2020-10-29 07:18:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:56,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:57,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:57,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:58,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:58,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-29 07:18:58,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:18:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3222 [2020-10-29 07:18:58,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:58,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:18:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-29 07:18:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:59,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:59,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:59,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:59,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:18:59,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:59,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:18:59,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:59,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:59,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:18:59,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 07:18:59,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:59,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 07:18:59,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:59,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:18:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:59,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:59,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:59,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:18:59,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:18:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-29 07:18:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:59,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:18:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:00,115 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-29 07:19:00,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288043240] [2020-10-29 07:19:00,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:19:00,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:19:00,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160991137] [2020-10-29 07:19:00,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:19:00,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:19:00,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:19:00,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:19:00,119 INFO L87 Difference]: Start difference. First operand 14025 states and 18150 transitions. Second operand 7 states. [2020-10-29 07:19:02,575 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 07:19:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:19:29,695 INFO L93 Difference]: Finished difference Result 25025 states and 33143 transitions. [2020-10-29 07:19:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:19:29,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-29 07:19:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:19:29,764 INFO L225 Difference]: With dead ends: 25025 [2020-10-29 07:19:29,764 INFO L226 Difference]: Without dead ends: 14297 [2020-10-29 07:19:29,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:19:29,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14297 states. [2020-10-29 07:19:30,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14297 to 14234. [2020-10-29 07:19:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14234 states. [2020-10-29 07:19:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14234 states to 14234 states and 18489 transitions. [2020-10-29 07:19:30,199 INFO L78 Accepts]: Start accepts. Automaton has 14234 states and 18489 transitions. Word has length 265 [2020-10-29 07:19:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:19:30,201 INFO L481 AbstractCegarLoop]: Abstraction has 14234 states and 18489 transitions. [2020-10-29 07:19:30,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:19:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 14234 states and 18489 transitions. [2020-10-29 07:19:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 07:19:30,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:19:30,208 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:19:30,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:19:30,209 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:19:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:19:30,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1343246149, now seen corresponding path program 1 times [2020-10-29 07:19:30,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:19:30,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647226976] [2020-10-29 07:19:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:19:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:30,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:31,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:31,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:32,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:34,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:34,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 07:19:34,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:19:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3936 [2020-10-29 07:19:34,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:34,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:19:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:19:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 272 [2020-10-29 07:19:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:34,563 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:19:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:19:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:34,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:34,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:34,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:19:34,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:19:34,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:34,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:19:34,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:19:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:34,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:35,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:35,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:19:35,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:19:35,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-29 07:19:35,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:35,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:35,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:35,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:19:35,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:19:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:35,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:35,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:35,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:19:35,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:19:35,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-29 07:19:35,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:35,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:35,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:35,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:35,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:19:35,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:19:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:19:35,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647226976] [2020-10-29 07:19:35,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:19:35,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:19:35,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293462386] [2020-10-29 07:19:35,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:19:35,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:19:35,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:19:35,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:19:35,793 INFO L87 Difference]: Start difference. First operand 14234 states and 18489 transitions. Second operand 7 states. [2020-10-29 07:19:35,975 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:19:37,132 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 07:19:39,333 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 76