/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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:56:16,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:56:16,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:56:16,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:56:16,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:56:16,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:56:16,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:56:16,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:56:16,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:56:16,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:56:16,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:56:16,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:56:16,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:56:16,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:56:16,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:56:16,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:56:16,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:56:16,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:56:16,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:56:16,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:56:16,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:56:16,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:56:16,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:56:16,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:56:16,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:56:16,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:56:16,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:56:16,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:56:16,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:56:16,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:56:16,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:56:16,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:56:16,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:56:16,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:56:16,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:56:16,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:56:16,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:56:16,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:56:16,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:56:16,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:56:16,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:56:16,586 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 06:56:16,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:56:16,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:56:16,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:56:16,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:56:16,618 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:56:16,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:56:16,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:56:16,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:56:16,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:56:16,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:56:16,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:56:16,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:56:16,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:56:16,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:56:16,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:56:16,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:56:16,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:56:16,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:56:16,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:56:16,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:56:16,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:56:16,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:56:16,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:56:16,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:56:16,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:56:16,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:56:16,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:56:16,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:56:16,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:56:16,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:56:17,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:56:17,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:56:17,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:56:17,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:56:17,100 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:56:17,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label13.c [2020-10-29 06:56:17,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df7c13836/58fe95e52aac49f3ba292ab314ace20d/FLAG9171d8a29 [2020-10-29 06:56:18,300 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:56:18,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label13.c [2020-10-29 06:56:18,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df7c13836/58fe95e52aac49f3ba292ab314ace20d/FLAG9171d8a29 [2020-10-29 06:56:18,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df7c13836/58fe95e52aac49f3ba292ab314ace20d [2020-10-29 06:56:18,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:56:18,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:56:18,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:56:18,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:56:18,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:56:18,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:56:18" (1/1) ... [2020-10-29 06:56:18,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69278ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:18, skipping insertion in model container [2020-10-29 06:56:18,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:56:18" (1/1) ... [2020-10-29 06:56:18,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:56:18,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:56:20,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:56:20,357 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:56:21,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:56:21,141 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:56:21,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:21 WrapperNode [2020-10-29 06:56:21,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:56:21,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:56:21,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:56:21,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:56:21,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:21" (1/1) ... [2020-10-29 06:56:21,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:21" (1/1) ... [2020-10-29 06:56:21,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:21" (1/1) ... [2020-10-29 06:56:21,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:21" (1/1) ... [2020-10-29 06:56:21,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:21" (1/1) ... [2020-10-29 06:56:21,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:21" (1/1) ... [2020-10-29 06:56:21,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:21" (1/1) ... [2020-10-29 06:56:21,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:56:21,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:56:21,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:56:21,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:56:21,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:21" (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 06:56:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:56:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:56:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:56:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:56:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:56:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:56:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:56:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:56:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:56:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:56:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:56:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:56:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:56:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:56:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:56:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:56:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:56:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:56:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:56:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:56:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:56:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:56:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:56:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:56:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:56:27,743 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:56:27,744 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:56:27,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:56:27 BoogieIcfgContainer [2020-10-29 06:56:27,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:56:27,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:56:27,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:56:27,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:56:27,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:56:18" (1/3) ... [2020-10-29 06:56:27,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b967a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:56:27, skipping insertion in model container [2020-10-29 06:56:27,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:56:21" (2/3) ... [2020-10-29 06:56:27,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b967a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:56:27, skipping insertion in model container [2020-10-29 06:56:27,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:56:27" (3/3) ... [2020-10-29 06:56:27,760 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label13.c [2020-10-29 06:56:27,774 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:56:27,781 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:56:27,796 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:56:27,834 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:56:27,834 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:56:27,834 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:56:27,834 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:56:27,834 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:56:27,835 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:56:27,835 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:56:27,835 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:56:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:56:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 06:56:27,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:27,882 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] [2020-10-29 06:56:27,882 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:27,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1536527484, now seen corresponding path program 1 times [2020-10-29 06:56:27,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:27,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300730286] [2020-10-29 06:56:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:28,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:28,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:28,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 06:56:28,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:28,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-10-29 06:56:28,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:28,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:56:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:56:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 06:56:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:56:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:28,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:28,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:28,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:28,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:56:28,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:28,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:56:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:28,983 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 06:56:28,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300730286] [2020-10-29 06:56:28,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:56:28,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:56:28,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583289895] [2020-10-29 06:56:28,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:56:28,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:29,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:56:29,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:56:29,016 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-29 06:56:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:41,956 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 06:56:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:56:41,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-29 06:56:41,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:41,996 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:56:41,996 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:56:42,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:56:42,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:56:42,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 06:56:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 06:56:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2870 transitions. [2020-10-29 06:56:42,208 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2870 transitions. Word has length 35 [2020-10-29 06:56:42,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:42,209 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2870 transitions. [2020-10-29 06:56:42,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:56:42,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2870 transitions. [2020-10-29 06:56:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 06:56:42,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:42,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:42,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:56:42,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:42,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:42,218 INFO L82 PathProgramCache]: Analyzing trace with hash -275307231, now seen corresponding path program 1 times [2020-10-29 06:56:42,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:42,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985301330] [2020-10-29 06:56:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:42,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:43,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:43,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 06:56:43,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:56:43,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-29 06:56:43,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:43,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:56:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:56:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:56:43,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 06:56:43,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:43,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:43,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 06:56:43,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:43,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:56:43,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 06:56:43,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:43,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:44,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:44,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 06:56:44,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:44,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 06:56:44,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:44,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:44,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:44,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:44,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:56:44,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:56:44,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985301330] [2020-10-29 06:56:44,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:56:44,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 06:56:44,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629584415] [2020-10-29 06:56:44,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:56:44,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:44,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:56:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:56:44,211 INFO L87 Difference]: Start difference. First operand 1554 states and 2870 transitions. Second operand 8 states. [2020-10-29 06:57:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:04,565 INFO L93 Difference]: Finished difference Result 6337 states and 11855 transitions. [2020-10-29 06:57:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:57:04,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-10-29 06:57:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:04,602 INFO L225 Difference]: With dead ends: 6337 [2020-10-29 06:57:04,603 INFO L226 Difference]: Without dead ends: 4789 [2020-10-29 06:57:04,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 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 06:57:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4789 states. [2020-10-29 06:57:04,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4789 to 4749. [2020-10-29 06:57:04,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4749 states. [2020-10-29 06:57:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 7753 transitions. [2020-10-29 06:57:04,791 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 7753 transitions. Word has length 112 [2020-10-29 06:57:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:04,792 INFO L481 AbstractCegarLoop]: Abstraction has 4749 states and 7753 transitions. [2020-10-29 06:57:04,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:57:04,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 7753 transitions. [2020-10-29 06:57:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 06:57:04,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:04,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:04,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:57:04,797 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:04,798 INFO L82 PathProgramCache]: Analyzing trace with hash 921088085, now seen corresponding path program 1 times [2020-10-29 06:57:04,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:04,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31077137] [2020-10-29 06:57:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:05,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:06,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:06,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 06:57:06,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:57:06,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1152 [2020-10-29 06:57:06,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:06,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:57:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:57:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 06:57:06,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:57:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:06,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:06,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:06,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:06,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 06:57:06,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:06,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:57:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:06,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:06,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:06,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:06,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 06:57:06,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:06,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 06:57:06,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:06,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:57:06,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:57:06,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31077137] [2020-10-29 06:57:06,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:57:06,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:57:06,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575850281] [2020-10-29 06:57:06,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:57:06,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:06,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:57:06,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:57:06,609 INFO L87 Difference]: Start difference. First operand 4749 states and 7753 transitions. Second operand 7 states. [2020-10-29 06:57:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:23,502 INFO L93 Difference]: Finished difference Result 14671 states and 25381 transitions. [2020-10-29 06:57:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:57:23,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-29 06:57:23,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:23,577 INFO L225 Difference]: With dead ends: 14671 [2020-10-29 06:57:23,577 INFO L226 Difference]: Without dead ends: 9928 [2020-10-29 06:57:23,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:57:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9928 states. [2020-10-29 06:57:24,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9928 to 9616. [2020-10-29 06:57:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9616 states. [2020-10-29 06:57:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9616 states to 9616 states and 14068 transitions. [2020-10-29 06:57:24,101 INFO L78 Accepts]: Start accepts. Automaton has 9616 states and 14068 transitions. Word has length 138 [2020-10-29 06:57:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:24,109 INFO L481 AbstractCegarLoop]: Abstraction has 9616 states and 14068 transitions. [2020-10-29 06:57:24,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:57:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 9616 states and 14068 transitions. [2020-10-29 06:57:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 06:57:24,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:24,125 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:57:24,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:57:24,126 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:24,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1728016514, now seen corresponding path program 1 times [2020-10-29 06:57:24,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:24,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768336923] [2020-10-29 06:57:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:24,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:24,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:26,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:26,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 06:57:26,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:57:26,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2343 [2020-10-29 06:57:26,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:26,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:57:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:57:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 06:57:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:26,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:26,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:26,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:26,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:26,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:57:26,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:26,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:57:26,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:26,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:26,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:26,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:57:26,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 06:57:26,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:26,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:26,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:26,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:57:26,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:57:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:27,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:27,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:57:27,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 06:57:27,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:27,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:27,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:57:27,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:57:27,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768336923] [2020-10-29 06:57:27,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:27,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:57:27,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827994516] [2020-10-29 06:57:27,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:57:27,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:27,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:57:27,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:57:27,165 INFO L87 Difference]: Start difference. First operand 9616 states and 14068 transitions. Second operand 8 states. [2020-10-29 06:57:47,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:47,556 INFO L93 Difference]: Finished difference Result 28660 states and 44243 transitions. [2020-10-29 06:57:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:57:47,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-10-29 06:57:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:47,662 INFO L225 Difference]: With dead ends: 28660 [2020-10-29 06:57:47,662 INFO L226 Difference]: Without dead ends: 19050 [2020-10-29 06:57:47,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:57:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19050 states. [2020-10-29 06:57:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19050 to 18798. [2020-10-29 06:57:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18798 states. [2020-10-29 06:57:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18798 states to 18798 states and 26797 transitions. [2020-10-29 06:57:48,494 INFO L78 Accepts]: Start accepts. Automaton has 18798 states and 26797 transitions. Word has length 190 [2020-10-29 06:57:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:48,497 INFO L481 AbstractCegarLoop]: Abstraction has 18798 states and 26797 transitions. [2020-10-29 06:57:48,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:57:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 18798 states and 26797 transitions. [2020-10-29 06:57:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 06:57:48,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:48,506 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:57:48,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:57:48,507 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:48,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:48,508 INFO L82 PathProgramCache]: Analyzing trace with hash -498119478, now seen corresponding path program 1 times [2020-10-29 06:57:48,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:48,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175480902] [2020-10-29 06:57:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:50,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:53,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:53,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-29 06:57:53,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:57:53,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 06:57:53,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:53,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:53,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:57:53,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:57:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 06:57:53,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:57:53,736 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:57:53,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:53,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:53,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:53,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:53,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:57:53,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:53,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:57:53,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:54,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:54,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 06:57:54,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:54,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 06:57:54,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:54,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:57:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 06:57:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:54,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:54,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:57:54,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 06:57:54,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:54,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 06:57:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:54,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 54 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:57:54,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175480902] [2020-10-29 06:57:54,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:54,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:57:54,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137502059] [2020-10-29 06:57:54,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:57:54,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:54,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:57:54,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:57:54,331 INFO L87 Difference]: Start difference. First operand 18798 states and 26797 transitions. Second operand 7 states. [2020-10-29 06:57:54,477 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:58:13,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:13,163 INFO L93 Difference]: Finished difference Result 51374 states and 85460 transitions. [2020-10-29 06:58:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:58:13,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-29 06:58:13,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:13,382 INFO L225 Difference]: With dead ends: 51374 [2020-10-29 06:58:13,382 INFO L226 Difference]: Without dead ends: 32582 [2020-10-29 06:58:13,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:58:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32582 states. [2020-10-29 06:58:15,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32582 to 27182. [2020-10-29 06:58:15,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27182 states. [2020-10-29 06:58:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27182 states to 27182 states and 37916 transitions. [2020-10-29 06:58:15,204 INFO L78 Accepts]: Start accepts. Automaton has 27182 states and 37916 transitions. Word has length 228 [2020-10-29 06:58:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:15,205 INFO L481 AbstractCegarLoop]: Abstraction has 27182 states and 37916 transitions. [2020-10-29 06:58:15,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:58:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 27182 states and 37916 transitions. [2020-10-29 06:58:15,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-29 06:58:15,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:15,211 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:58:15,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:58:15,211 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:15,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:15,212 INFO L82 PathProgramCache]: Analyzing trace with hash -2146180266, now seen corresponding path program 1 times [2020-10-29 06:58:15,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:15,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513684232] [2020-10-29 06:58:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:16,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:16,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 06:58:16,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:58:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1441 [2020-10-29 06:58:16,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:16,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:58:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:58:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:17,110 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:58:17,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:17,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:17,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:17,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:17,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:17,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:58:17,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:17,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:17,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:17,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:58:17,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 06:58:17,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:17,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:58:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:58:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:17,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:17,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:17,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 06:58:17,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:17,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 06:58:17,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:17,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:58:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:58:17,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513684232] [2020-10-29 06:58:17,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:58:17,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:58:17,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619980004] [2020-10-29 06:58:17,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:58:17,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:17,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:58:17,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:58:17,833 INFO L87 Difference]: Start difference. First operand 27182 states and 37916 transitions. Second operand 7 states. [2020-10-29 06:58:18,747 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:58:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:39,271 INFO L93 Difference]: Finished difference Result 53090 states and 80018 transitions. [2020-10-29 06:58:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:58:39,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-10-29 06:58:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:39,359 INFO L225 Difference]: With dead ends: 53090 [2020-10-29 06:58:39,359 INFO L226 Difference]: Without dead ends: 21828 [2020-10-29 06:58:39,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:58:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21828 states. [2020-10-29 06:58:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21828 to 21222. [2020-10-29 06:58:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21222 states. [2020-10-29 06:58:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21222 states to 21222 states and 28136 transitions. [2020-10-29 06:58:40,184 INFO L78 Accepts]: Start accepts. Automaton has 21222 states and 28136 transitions. Word has length 234 [2020-10-29 06:58:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:40,184 INFO L481 AbstractCegarLoop]: Abstraction has 21222 states and 28136 transitions. [2020-10-29 06:58:40,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:58:40,184 INFO L276 IsEmpty]: Start isEmpty. Operand 21222 states and 28136 transitions. [2020-10-29 06:58:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-29 06:58:40,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:40,191 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:58:40,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:58:40,191 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1904023688, now seen corresponding path program 1 times [2020-10-29 06:58:40,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:40,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013478033] [2020-10-29 06:58:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:41,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:41,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-29 06:58:41,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-29 06:58:41,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:41,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-29 06:58:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 06:58:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:41,428 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:58:41,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:41,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:41,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:41,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:41,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:58:41,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:41,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:41,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:41,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:58:41,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 06:58:41,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:41,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:41,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:41,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:41,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:41,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:58:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:41,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:41,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:41,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 06:58:41,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:41,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 06:58:41,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:41,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:41,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:41,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:58:41,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:58:41,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013478033] [2020-10-29 06:58:41,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:58:41,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:58:41,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738295849] [2020-10-29 06:58:41,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:58:41,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:41,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:58:41,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:58:41,986 INFO L87 Difference]: Start difference. First operand 21222 states and 28136 transitions. Second operand 5 states. [2020-10-29 06:59:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:01,589 INFO L93 Difference]: Finished difference Result 51141 states and 71676 transitions. [2020-10-29 06:59:01,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:59:01,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2020-10-29 06:59:01,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:01,681 INFO L225 Difference]: With dead ends: 51141 [2020-10-29 06:59:01,681 INFO L226 Difference]: Without dead ends: 30692 [2020-10-29 06:59:01,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:59:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30692 states. [2020-10-29 06:59:02,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30692 to 30616. [2020-10-29 06:59:02,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30616 states. [2020-10-29 06:59:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30616 states to 30616 states and 39779 transitions. [2020-10-29 06:59:02,423 INFO L78 Accepts]: Start accepts. Automaton has 30616 states and 39779 transitions. Word has length 283 [2020-10-29 06:59:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:02,423 INFO L481 AbstractCegarLoop]: Abstraction has 30616 states and 39779 transitions. [2020-10-29 06:59:02,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:59:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 30616 states and 39779 transitions. [2020-10-29 06:59:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 06:59:02,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:02,431 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:59:02,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:59:02,431 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:02,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:02,432 INFO L82 PathProgramCache]: Analyzing trace with hash -453499746, now seen corresponding path program 1 times [2020-10-29 06:59:02,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:02,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296283549] [2020-10-29 06:59:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:02,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:04,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:07,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:07,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-29 06:59:07,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4507 [2020-10-29 06:59:07,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:07,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-29 06:59:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:59:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:07,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:07,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:07,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:07,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:07,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:07,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:59:07,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:07,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:07,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:07,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:07,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:07,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:59:07,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 06:59:07,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:07,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 06:59:07,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:07,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 06:59:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:07,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:07,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:07,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 06:59:07,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:07,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 06:59:07,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:07,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:59:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:59:08,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296283549] [2020-10-29 06:59:08,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:08,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:59:08,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021703617] [2020-10-29 06:59:08,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:08,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:08,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:08,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:08,186 INFO L87 Difference]: Start difference. First operand 30616 states and 39779 transitions. Second operand 7 states. [2020-10-29 06:59:09,428 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:59:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:27,491 INFO L93 Difference]: Finished difference Result 70145 states and 97672 transitions. [2020-10-29 06:59:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:59:27,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-29 06:59:27,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:27,601 INFO L225 Difference]: With dead ends: 70145 [2020-10-29 06:59:27,601 INFO L226 Difference]: Without dead ends: 40302 [2020-10-29 06:59:27,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:59:27,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40302 states. [2020-10-29 06:59:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40302 to 35392. [2020-10-29 06:59:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35392 states. [2020-10-29 06:59:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35392 states to 35392 states and 45684 transitions. [2020-10-29 06:59:28,512 INFO L78 Accepts]: Start accepts. Automaton has 35392 states and 45684 transitions. Word has length 307 [2020-10-29 06:59:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:28,513 INFO L481 AbstractCegarLoop]: Abstraction has 35392 states and 45684 transitions. [2020-10-29 06:59:28,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:59:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 35392 states and 45684 transitions. [2020-10-29 06:59:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-29 06:59:28,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:28,530 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:59:28,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:59:28,530 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:28,531 INFO L82 PathProgramCache]: Analyzing trace with hash -862005415, now seen corresponding path program 1 times [2020-10-29 06:59:28,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:28,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871866497] [2020-10-29 06:59:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:28,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:28,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:33,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-29 06:59:33,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:33,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 06:59:33,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:33,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:33,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:59:33,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:33,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:59:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-10-29 06:59:33,874 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:59:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:33,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:33,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:33,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:59:33,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:33,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:33,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:33,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:34,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:34,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:59:34,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:34,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 06:59:34,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:34,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 06:59:34,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 06:59:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:34,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:34,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:59:34,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 06:59:34,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:34,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 06:59:34,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:34,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-29 06:59:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:34,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:34,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 06:59:34,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:34,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 06:59:34,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:34,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-29 06:59:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 81 proven. 211 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 06:59:35,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871866497] [2020-10-29 06:59:35,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:35,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:59:35,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810273417] [2020-10-29 06:59:35,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:35,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:35,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:35,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:35,064 INFO L87 Difference]: Start difference. First operand 35392 states and 45684 transitions. Second operand 7 states. [2020-10-29 06:59:40,804 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 06:59:50,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:50,504 INFO L93 Difference]: Finished difference Result 70578 states and 92730 transitions. [2020-10-29 06:59:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:59:50,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 420 [2020-10-29 06:59:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:50,582 INFO L225 Difference]: With dead ends: 70578 [2020-10-29 06:59:50,582 INFO L226 Difference]: Without dead ends: 35959 [2020-10-29 06:59:50,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:59:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35959 states. [2020-10-29 06:59:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35959 to 35456. [2020-10-29 06:59:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35456 states. [2020-10-29 06:59:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35456 states to 35456 states and 45846 transitions. [2020-10-29 06:59:51,592 INFO L78 Accepts]: Start accepts. Automaton has 35456 states and 45846 transitions. Word has length 420 [2020-10-29 06:59:51,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:51,596 INFO L481 AbstractCegarLoop]: Abstraction has 35456 states and 45846 transitions. [2020-10-29 06:59:51,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:59:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 35456 states and 45846 transitions. [2020-10-29 06:59:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-29 06:59:51,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:51,629 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:59:51,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:59:51,630 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:51,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:51,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1397454954, now seen corresponding path program 1 times [2020-10-29 06:59:51,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:51,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880994186] [2020-10-29 06:59:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:54,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:54,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking...