/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=DEEPEST --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/Problem06_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:29:51,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:29:51,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:29:51,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:29:51,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:29:51,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:29:51,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:29:51,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:29:51,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:29:51,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:29:51,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:29:51,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:29:51,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:29:51,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:29:51,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:29:51,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:29:51,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:29:51,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:29:51,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:29:51,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:29:51,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:29:51,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:29:51,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:29:51,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:29:51,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:29:51,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:29:51,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:29:51,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:29:51,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:29:51,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:29:51,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:29:51,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:29:51,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:29:51,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:29:51,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:29:51,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:29:51,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:29:51,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:29:51,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:29:51,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:29:51,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:29:51,691 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 [2020-10-27 16:29:51,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:29:51,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:29:51,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:29:51,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:29:51,742 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:29:51,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:29:51,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:29:51,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:29:51,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:29:51,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:29:51,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:29:51,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:29:51,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:29:51,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:29:51,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:29:51,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:29:51,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:29:51,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:29:51,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:29:51,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:29:51,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:29:51,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:29:51,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:29:51,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:29:51,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:29:51,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:29:51,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:29:51,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:29:51,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:29:51,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:29:52,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:29:52,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:29:52,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:29:52,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:29:52,230 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:29:52,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label25.c [2020-10-27 16:29:52,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ae63be68/7d4c4297692f467c88fd52244a6c1d43/FLAGdb9d66e2f [2020-10-27 16:29:53,594 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:29:53,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label25.c [2020-10-27 16:29:53,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ae63be68/7d4c4297692f467c88fd52244a6c1d43/FLAGdb9d66e2f [2020-10-27 16:29:53,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ae63be68/7d4c4297692f467c88fd52244a6c1d43 [2020-10-27 16:29:53,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:29:53,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:29:53,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:29:53,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:29:53,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:29:53,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:29:53" (1/1) ... [2020-10-27 16:29:53,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c058000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:53, skipping insertion in model container [2020-10-27 16:29:53,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:29:53" (1/1) ... [2020-10-27 16:29:53,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:29:54,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:29:56,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:29:56,581 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:29:57,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:29:57,832 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:29:57,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:57 WrapperNode [2020-10-27 16:29:57,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:29:57,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:29:57,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:29:57,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:29:57,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:57" (1/1) ... [2020-10-27 16:29:57,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:57" (1/1) ... [2020-10-27 16:29:57,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:57" (1/1) ... [2020-10-27 16:29:57,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:57" (1/1) ... [2020-10-27 16:29:58,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:57" (1/1) ... [2020-10-27 16:29:58,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:57" (1/1) ... [2020-10-27 16:29:58,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:57" (1/1) ... [2020-10-27 16:29:58,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:29:58,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:29:58,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:29:58,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:29:58,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:57" (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 [2020-10-27 16:29:58,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:29:58,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:29:58,681 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:29:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:29:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:29:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:29:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:29:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:29:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:29:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:29:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:29:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:29:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:29:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:29:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:29:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:29:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:29:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:29:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:29:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:29:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:29:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:29:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:29:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:29:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:29:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:29:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:30:06,786 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:30:06,787 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:30:06,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:30:06 BoogieIcfgContainer [2020-10-27 16:30:06,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:30:06,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:30:06,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:30:06,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:30:06,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:29:53" (1/3) ... [2020-10-27 16:30:06,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4352fde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:30:06, skipping insertion in model container [2020-10-27 16:30:06,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:57" (2/3) ... [2020-10-27 16:30:06,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4352fde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:30:06, skipping insertion in model container [2020-10-27 16:30:06,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:30:06" (3/3) ... [2020-10-27 16:30:06,803 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label25.c [2020-10-27 16:30:06,816 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:30:06,823 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:30:06,838 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:30:06,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:30:06,884 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:30:06,884 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:30:06,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:30:06,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:30:06,885 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:30:06,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:30:06,885 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:30:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:30:07,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2020-10-27 16:30:07,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:30:07,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:30:07,018 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:30:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:30:07,026 INFO L82 PathProgramCache]: Analyzing trace with hash -965328152, now seen corresponding path program 1 times [2020-10-27 16:30:07,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:30:07,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238458380] [2020-10-27 16:30:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:30:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:11,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:13,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:13,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-27 16:30:13,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:30:13,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5202 [2020-10-27 16:30:13,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 16:30:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:30:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1009 [2020-10-27 16:30:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:30:15,058 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:30:15,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:30:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:15,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:15,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:15,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:30:15,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:30:15,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 16:30:15,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:30:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:30:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:30:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:30:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:30:16,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238458380] [2020-10-27 16:30:16,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:30:16,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:30:16,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743381477] [2020-10-27 16:30:16,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:30:16,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:30:16,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:30:16,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:30:16,738 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-27 16:30:17,042 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:30:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:30:34,763 INFO L93 Difference]: Finished difference Result 3782 states and 7039 transitions. [2020-10-27 16:30:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:30:34,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1000 [2020-10-27 16:30:34,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:30:34,829 INFO L225 Difference]: With dead ends: 3782 [2020-10-27 16:30:34,829 INFO L226 Difference]: Without dead ends: 2399 [2020-10-27 16:30:34,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:30:34,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2020-10-27 16:30:35,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2374. [2020-10-27 16:30:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-27 16:30:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3875 transitions. [2020-10-27 16:30:35,057 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3875 transitions. Word has length 1000 [2020-10-27 16:30:35,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:30:35,060 INFO L481 AbstractCegarLoop]: Abstraction has 2374 states and 3875 transitions. [2020-10-27 16:30:35,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:30:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3875 transitions. [2020-10-27 16:30:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2020-10-27 16:30:35,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:30:35,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:30:35,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:30:35,108 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:30:35,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:30:35,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1401156294, now seen corresponding path program 1 times [2020-10-27 16:30:35,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:30:35,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625002017] [2020-10-27 16:30:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:30:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:35,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:40,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:40,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1033 [2020-10-27 16:30:40,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:30:40,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5281 [2020-10-27 16:30:40,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:30:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 16:30:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1006 [2020-10-27 16:30:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 16:30:42,486 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:30:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:30:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:42,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:42,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:30:42,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:30:42,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:30:42,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:30:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:30:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:30:42,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:30:42,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:30:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:42,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:42,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:42,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:30:42,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:30:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 16:30:42,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:30:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:30:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 16:30:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:30:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:30:44,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625002017] [2020-10-27 16:30:44,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:30:44,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:30:44,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269435244] [2020-10-27 16:30:44,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:30:44,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:30:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:30:44,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:30:44,210 INFO L87 Difference]: Start difference. First operand 2374 states and 3875 transitions. Second operand 6 states. [2020-10-27 16:30:44,467 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:31:03,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:31:03,386 INFO L93 Difference]: Finished difference Result 6874 states and 11343 transitions. [2020-10-27 16:31:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:31:03,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1013 [2020-10-27 16:31:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:31:03,421 INFO L225 Difference]: With dead ends: 6874 [2020-10-27 16:31:03,421 INFO L226 Difference]: Without dead ends: 4506 [2020-10-27 16:31:03,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:31:03,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2020-10-27 16:31:03,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4481. [2020-10-27 16:31:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4481 states. [2020-10-27 16:31:03,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 7192 transitions. [2020-10-27 16:31:03,570 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 7192 transitions. Word has length 1013 [2020-10-27 16:31:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:31:03,572 INFO L481 AbstractCegarLoop]: Abstraction has 4481 states and 7192 transitions. [2020-10-27 16:31:03,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:31:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 7192 transitions. [2020-10-27 16:31:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2020-10-27 16:31:03,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:31:03,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:31:03,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:31:03,596 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:31:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:31:03,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1162004667, now seen corresponding path program 1 times [2020-10-27 16:31:03,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:31:03,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721806375] [2020-10-27 16:31:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:31:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:03,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:08,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:08,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1043 [2020-10-27 16:31:08,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:31:08,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-10-27 16:31:08,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:31:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 16:31:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 16:31:08,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:09,430 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:31:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:31:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:09,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:09,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:31:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:31:09,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:31:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:31:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:31:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:09,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:31:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:09,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:09,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:31:09,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:09,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 16:31:09,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:09,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:31:09,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:31:09,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 16:31:09,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:09,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 16:31:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:09,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:09,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:09,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:31:09,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:09,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 16:31:09,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:31:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:31:09,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 16:31:09,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:31:10,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721806375] [2020-10-27 16:31:10,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:31:10,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 16:31:10,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287888398] [2020-10-27 16:31:10,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:31:10,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:31:10,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:31:10,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:31:10,279 INFO L87 Difference]: Start difference. First operand 4481 states and 7192 transitions. Second operand 8 states. [2020-10-27 16:31:10,548 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:31:11,328 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:31:43,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:31:43,238 INFO L93 Difference]: Finished difference Result 17972 states and 29430 transitions. [2020-10-27 16:31:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:31:43,240 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1021 [2020-10-27 16:31:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:31:43,314 INFO L225 Difference]: With dead ends: 17972 [2020-10-27 16:31:43,315 INFO L226 Difference]: Without dead ends: 13497 [2020-10-27 16:31:43,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 16:31:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13497 states. [2020-10-27 16:31:43,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13497 to 13450. [2020-10-27 16:31:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13450 states. [2020-10-27 16:31:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13450 states to 13450 states and 21939 transitions. [2020-10-27 16:31:43,889 INFO L78 Accepts]: Start accepts. Automaton has 13450 states and 21939 transitions. Word has length 1021 [2020-10-27 16:31:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:31:43,890 INFO L481 AbstractCegarLoop]: Abstraction has 13450 states and 21939 transitions. [2020-10-27 16:31:43,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 16:31:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 13450 states and 21939 transitions. [2020-10-27 16:31:43,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2020-10-27 16:31:43,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:31:43,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:31:43,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:31:43,951 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:31:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:31:43,953 INFO L82 PathProgramCache]: Analyzing trace with hash 665596375, now seen corresponding path program 1 times [2020-10-27 16:31:43,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:31:43,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526429039] [2020-10-27 16:31:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:31:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:44,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:49,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:49,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1045 [2020-10-27 16:31:49,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:31:49,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 16:31:49,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:31:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 16:31:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 16:31:49,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:49,535 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:31:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:31:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:49,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:49,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:31:49,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:31:49,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:31:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:31:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:31:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:49,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:31:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:49,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:49,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:49,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:31:49,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 16:31:49,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:31:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:31:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 16:31:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:49,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 16:31:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:49,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:49,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 16:31:49,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 16:31:49,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:31:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:31:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 16:31:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:31:50,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526429039] [2020-10-27 16:31:50,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:31:50,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 16:31:50,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44757608] [2020-10-27 16:31:50,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:31:50,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:31:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:31:50,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:31:50,520 INFO L87 Difference]: Start difference. First operand 13450 states and 21939 transitions. Second operand 8 states. [2020-10-27 16:31:50,808 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:31:51,220 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:31:53,336 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:32:23,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:32:23,832 INFO L93 Difference]: Finished difference Result 52926 states and 92724 transitions. [2020-10-27 16:32:23,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 16:32:23,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1023 [2020-10-27 16:32:23,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:32:24,198 INFO L225 Difference]: With dead ends: 52926 [2020-10-27 16:32:24,198 INFO L226 Difference]: Without dead ends: 39482 [2020-10-27 16:32:24,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 16:32:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39482 states. [2020-10-27 16:32:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39482 to 39075. [2020-10-27 16:32:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39075 states. [2020-10-27 16:32:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39075 states to 39075 states and 65088 transitions. [2020-10-27 16:32:25,508 INFO L78 Accepts]: Start accepts. Automaton has 39075 states and 65088 transitions. Word has length 1023 [2020-10-27 16:32:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:32:25,508 INFO L481 AbstractCegarLoop]: Abstraction has 39075 states and 65088 transitions. [2020-10-27 16:32:25,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 16:32:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 39075 states and 65088 transitions. [2020-10-27 16:32:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2020-10-27 16:32:25,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:32:25,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:32:25,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:32:25,676 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:32:25,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:32:25,677 INFO L82 PathProgramCache]: Analyzing trace with hash 806277267, now seen corresponding path program 1 times [2020-10-27 16:32:25,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:32:25,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232546754] [2020-10-27 16:32:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:32:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:25,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:30,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:30,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-27 16:32:30,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:32:30,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-27 16:32:30,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:30,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:32:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 16:32:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1006 [2020-10-27 16:32:30,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:32:31,735 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:32:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:32:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:31,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:31,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:32:31,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:32:31,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:32:31,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:32:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:32:31,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:32:31,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:32:31,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:32:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:31,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:31,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 16:32:31,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:32:31,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 16:32:31,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:32:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:32:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 16:32:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:32:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:32:32,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232546754] [2020-10-27 16:32:32,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:32:32,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:32:32,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260045916] [2020-10-27 16:32:32,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:32:32,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:32:32,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:32:32,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:32:32,902 INFO L87 Difference]: Start difference. First operand 39075 states and 65088 transitions. Second operand 5 states. [2020-10-27 16:32:33,160 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:32:53,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:32:53,460 INFO L93 Difference]: Finished difference Result 115881 states and 204003 transitions. [2020-10-27 16:32:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:32:53,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1044 [2020-10-27 16:32:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:32:53,925 INFO L225 Difference]: With dead ends: 115881 [2020-10-27 16:32:53,925 INFO L226 Difference]: Without dead ends: 76812 [2020-10-27 16:32:54,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:32:54,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76812 states. [2020-10-27 16:32:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76812 to 76755. [2020-10-27 16:32:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76755 states. [2020-10-27 16:32:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76755 states to 76755 states and 127038 transitions. [2020-10-27 16:32:57,263 INFO L78 Accepts]: Start accepts. Automaton has 76755 states and 127038 transitions. Word has length 1044 [2020-10-27 16:32:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:32:57,265 INFO L481 AbstractCegarLoop]: Abstraction has 76755 states and 127038 transitions. [2020-10-27 16:32:57,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:32:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 76755 states and 127038 transitions. [2020-10-27 16:32:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2020-10-27 16:32:57,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:32:57,630 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:32:57,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:32:57,630 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:32:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:32:57,631 INFO L82 PathProgramCache]: Analyzing trace with hash 180458116, now seen corresponding path program 1 times [2020-10-27 16:32:57,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:32:57,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659267759] [2020-10-27 16:32:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:32:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:02,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:02,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1082 [2020-10-27 16:33:02,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:33:02,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 16:33:02,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:33:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 16:33:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 16:33:02,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:03,266 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:33:03,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:33:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:03,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:03,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:33:03,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:33:03,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:33:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:33:03,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:03,400 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:33:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:33:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:03,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:03,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:03,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 16:33:03,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 16:33:03,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:33:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 16:33:03,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:03,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 16:33:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:03,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:03,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:03,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:33:03,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 16:33:03,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:33:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:33:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 16:33:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:33:04,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659267759] [2020-10-27 16:33:04,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:33:04,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 16:33:04,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879993645] [2020-10-27 16:33:04,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:33:04,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:33:04,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:33:04,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:33:04,317 INFO L87 Difference]: Start difference. First operand 76755 states and 127038 transitions. Second operand 8 states. [2020-10-27 16:33:04,576 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:33:04,913 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:33:05,640 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159