/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:31:47,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:31:47,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:31:47,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:31:47,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:31:47,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:31:47,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:31:47,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:31:47,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:31:47,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:31:47,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:31:47,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:31:47,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:31:47,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:31:47,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:31:47,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:31:47,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:31:47,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:31:47,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:31:47,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:31:47,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:31:47,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:31:47,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:31:47,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:31:47,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:31:47,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:31:47,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:31:47,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:31:47,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:31:47,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:31:47,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:31:47,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:31:47,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:31:47,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:31:47,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:31:47,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:31:47,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:31:47,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:31:47,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:31:47,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:31:47,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:31:47,759 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 [2020-10-28 12:31:47,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:31:47,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:31:47,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:31:47,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:31:47,829 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:31:47,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:31:47,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:31:47,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:31:47,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:31:47,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:31:47,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:31:47,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:31:47,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:31:47,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:31:47,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:31:47,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:31:47,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:31:47,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:31:47,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:31:47,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:31:47,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:31:47,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:31:47,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:31:47,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:31:47,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:31:47,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:31:47,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:31:47,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:31:47,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:31:47,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:31:48,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:31:48,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:31:48,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:31:48,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:31:48,309 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:31:48,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12.c [2020-10-28 12:31:48,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24d38f9ba/c666c0819e7d408aaf5905fdd639d042/FLAG52cc5ebf4 [2020-10-28 12:31:49,466 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:31:49,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label12.c [2020-10-28 12:31:49,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24d38f9ba/c666c0819e7d408aaf5905fdd639d042/FLAG52cc5ebf4 [2020-10-28 12:31:49,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24d38f9ba/c666c0819e7d408aaf5905fdd639d042 [2020-10-28 12:31:49,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:31:49,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:31:49,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:31:49,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:31:49,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:31:49,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:31:49" (1/1) ... [2020-10-28 12:31:49,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318351a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:49, skipping insertion in model container [2020-10-28 12:31:49,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:31:49" (1/1) ... [2020-10-28 12:31:49,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:31:50,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:31:51,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:31:51,936 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:31:52,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:31:52,752 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:31:52,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:52 WrapperNode [2020-10-28 12:31:52,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:31:52,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:31:52,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:31:52,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:31:52,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:52" (1/1) ... [2020-10-28 12:31:52,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:52" (1/1) ... [2020-10-28 12:31:52,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:52" (1/1) ... [2020-10-28 12:31:52,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:52" (1/1) ... [2020-10-28 12:31:53,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:52" (1/1) ... [2020-10-28 12:31:53,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:52" (1/1) ... [2020-10-28 12:31:53,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:52" (1/1) ... [2020-10-28 12:31:53,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:31:53,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:31:53,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:31:53,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:31:53,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:52" (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 [2020-10-28 12:31:53,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:31:53,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:31:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:31:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:31:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:31:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:31:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:31:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:31:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:31:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:31:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:31:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:31:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:31:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:31:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:31:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:31:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:31:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:31:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:31:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:31:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:31:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:31:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:31:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:31:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:32:03,746 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:32:03,747 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:32:03,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:32:03 BoogieIcfgContainer [2020-10-28 12:32:03,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:32:03,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:32:03,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:32:03,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:32:03,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:31:49" (1/3) ... [2020-10-28 12:32:03,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a903e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:32:03, skipping insertion in model container [2020-10-28 12:32:03,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:52" (2/3) ... [2020-10-28 12:32:03,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a903e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:32:03, skipping insertion in model container [2020-10-28 12:32:03,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:32:03" (3/3) ... [2020-10-28 12:32:03,763 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label12.c [2020-10-28 12:32:03,778 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:32:03,785 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:32:03,802 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:32:03,855 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:32:03,856 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:32:03,856 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:32:03,856 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:32:03,856 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:32:03,856 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:32:03,856 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:32:03,857 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:32:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:32:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 12:32:03,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:03,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:32:03,913 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:03,922 INFO L82 PathProgramCache]: Analyzing trace with hash 249371746, now seen corresponding path program 1 times [2020-10-28 12:32:03,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:03,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006701592] [2020-10-28 12:32:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:04,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:04,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:04,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 12:32:04,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-28 12:32:04,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:04,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:32:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:32:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 12:32:04,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:32:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:32:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:04,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:04,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:04,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:32:04,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 12:32:04,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:04,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:32:04,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:32:04,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006701592] [2020-10-28 12:32:04,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:32:04,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:32:04,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835998332] [2020-10-28 12:32:04,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:32:04,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:32:04,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:32:04,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:32:04,947 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-28 12:32:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:32:33,083 INFO L93 Difference]: Finished difference Result 4085 states and 7568 transitions. [2020-10-28 12:32:33,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:32:33,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-28 12:32:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:32:33,129 INFO L225 Difference]: With dead ends: 4085 [2020-10-28 12:32:33,129 INFO L226 Difference]: Without dead ends: 2873 [2020-10-28 12:32:33,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:32:33,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-10-28 12:32:33,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1935. [2020-10-28 12:32:33,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-28 12:32:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3164 transitions. [2020-10-28 12:32:33,357 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3164 transitions. Word has length 16 [2020-10-28 12:32:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:32:33,358 INFO L481 AbstractCegarLoop]: Abstraction has 1935 states and 3164 transitions. [2020-10-28 12:32:33,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:32:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3164 transitions. [2020-10-28 12:32:33,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 12:32:33,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:33,367 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:32:33,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:32:33,369 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:33,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:33,371 INFO L82 PathProgramCache]: Analyzing trace with hash -733705670, now seen corresponding path program 1 times [2020-10-28 12:32:33,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:33,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146172124] [2020-10-28 12:32:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:34,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:34,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:32:34,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:32:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-10-28 12:32:34,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:34,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:32:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:32:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:32:34,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:32:34,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:32:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:34,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:34,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:32:34,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:32:34,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:34,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:32:34,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:34,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:32:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:34,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:35,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:32:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-28 12:32:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:35,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:32:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:32:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:32:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:32:35,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146172124] [2020-10-28 12:32:35,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:32:35,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:32:35,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100556242] [2020-10-28 12:32:35,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:32:35,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:32:35,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:32:35,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:32:35,381 INFO L87 Difference]: Start difference. First operand 1935 states and 3164 transitions. Second operand 7 states. [2020-10-28 12:33:01,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:33:01,882 INFO L93 Difference]: Finished difference Result 5680 states and 9486 transitions. [2020-10-28 12:33:01,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:33:01,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-28 12:33:01,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:33:01,935 INFO L225 Difference]: With dead ends: 5680 [2020-10-28 12:33:01,936 INFO L226 Difference]: Without dead ends: 3751 [2020-10-28 12:33:01,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:33:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2020-10-28 12:33:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3649. [2020-10-28 12:33:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3649 states. [2020-10-28 12:33:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 5463 transitions. [2020-10-28 12:33:02,079 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 5463 transitions. Word has length 91 [2020-10-28 12:33:02,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:33:02,080 INFO L481 AbstractCegarLoop]: Abstraction has 3649 states and 5463 transitions. [2020-10-28 12:33:02,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:33:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 5463 transitions. [2020-10-28 12:33:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 12:33:02,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:33:02,095 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:33:02,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:33:02,096 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:33:02,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:33:02,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1144762622, now seen corresponding path program 1 times [2020-10-28 12:33:02,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:33:02,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487293169] [2020-10-28 12:33:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:33:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:02,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:03,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:03,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:33:03,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:33:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-28 12:33:03,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:03,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:33:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:33:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:33:03,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:33:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:03,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:03,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:33:03,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:03,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:33:03,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:03,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:33:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:33:03,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:33:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:03,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:03,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:33:03,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:03,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 12:33:03,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:03,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:33:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:33:03,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:33:04,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487293169] [2020-10-28 12:33:04,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:33:04,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:33:04,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201872359] [2020-10-28 12:33:04,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:33:04,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:33:04,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:33:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:33:04,014 INFO L87 Difference]: Start difference. First operand 3649 states and 5463 transitions. Second operand 7 states. [2020-10-28 12:33:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:33:28,054 INFO L93 Difference]: Finished difference Result 11005 states and 16911 transitions. [2020-10-28 12:33:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:33:28,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-28 12:33:28,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:33:28,109 INFO L225 Difference]: With dead ends: 11005 [2020-10-28 12:33:28,110 INFO L226 Difference]: Without dead ends: 7362 [2020-10-28 12:33:28,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:33:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2020-10-28 12:33:28,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 7147. [2020-10-28 12:33:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7147 states. [2020-10-28 12:33:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9659 transitions. [2020-10-28 12:33:28,376 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9659 transitions. Word has length 105 [2020-10-28 12:33:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:33:28,377 INFO L481 AbstractCegarLoop]: Abstraction has 7147 states and 9659 transitions. [2020-10-28 12:33:28,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:33:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9659 transitions. [2020-10-28 12:33:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 12:33:28,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:33:28,379 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:33:28,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:33:28,380 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:33:28,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:33:28,381 INFO L82 PathProgramCache]: Analyzing trace with hash -451542954, now seen corresponding path program 1 times [2020-10-28 12:33:28,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:33:28,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856122332] [2020-10-28 12:33:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:33:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:28,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:29,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:29,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:29,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:33:29,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:33:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1317 [2020-10-28 12:33:29,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:29,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:33:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:33:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:33:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:29,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:33:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:29,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:29,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:29,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:33:29,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:33:29,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:29,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:33:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:33:29,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:29,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:33:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:29,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:30,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:30,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:33:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-28 12:33:30,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:30,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:33:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:33:30,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:33:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:33:30,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856122332] [2020-10-28 12:33:30,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:33:30,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:33:30,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500465870] [2020-10-28 12:33:30,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:33:30,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:33:30,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:33:30,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:33:30,413 INFO L87 Difference]: Start difference. First operand 7147 states and 9659 transitions. Second operand 7 states. [2020-10-28 12:33:55,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:33:55,805 INFO L93 Difference]: Finished difference Result 21501 states and 30523 transitions. [2020-10-28 12:33:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:33:55,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 12:33:55,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:33:55,885 INFO L225 Difference]: With dead ends: 21501 [2020-10-28 12:33:55,885 INFO L226 Difference]: Without dead ends: 14360 [2020-10-28 12:33:55,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:33:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14360 states. [2020-10-28 12:33:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14360 to 13406. [2020-10-28 12:33:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13406 states. [2020-10-28 12:33:56,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 17476 transitions. [2020-10-28 12:33:56,387 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 17476 transitions. Word has length 134 [2020-10-28 12:33:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:33:56,393 INFO L481 AbstractCegarLoop]: Abstraction has 13406 states and 17476 transitions. [2020-10-28 12:33:56,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:33:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 17476 transitions. [2020-10-28 12:33:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-28 12:33:56,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:33:56,406 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:33:56,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:33:56,407 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:33:56,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:33:56,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1063274586, now seen corresponding path program 1 times [2020-10-28 12:33:56,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:33:56,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959321354] [2020-10-28 12:33:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:33:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:56,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:01,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:01,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-28 12:34:01,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:34:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4854 [2020-10-28 12:34:01,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:01,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:34:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:34:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:34:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:34:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:01,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:01,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:34:01,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:34:01,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:01,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:34:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:34:01,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:34:01,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:34:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:01,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:01,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:01,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:34:01,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:01,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 12:34:01,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:01,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:34:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:34:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:01,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:34:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:01,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:01,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:34:01,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:01,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-28 12:34:01,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:01,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:34:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:34:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:34:01,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:34:02,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959321354] [2020-10-28 12:34:02,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:34:02,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:34:02,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143724919] [2020-10-28 12:34:02,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:34:02,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:34:02,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:34:02,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:34:02,160 INFO L87 Difference]: Start difference. First operand 13406 states and 17476 transitions. Second operand 7 states. [2020-10-28 12:34:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:34:28,287 INFO L93 Difference]: Finished difference Result 40096 states and 56257 transitions. [2020-10-28 12:34:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:34:28,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-28 12:34:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:34:28,411 INFO L225 Difference]: With dead ends: 40096 [2020-10-28 12:34:28,411 INFO L226 Difference]: Without dead ends: 26696 [2020-10-28 12:34:28,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:34:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26696 states. [2020-10-28 12:34:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26696 to 26305. [2020-10-28 12:34:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26305 states. [2020-10-28 12:34:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26305 states to 26305 states and 36125 transitions. [2020-10-28 12:34:29,424 INFO L78 Accepts]: Start accepts. Automaton has 26305 states and 36125 transitions. Word has length 216 [2020-10-28 12:34:29,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:34:29,425 INFO L481 AbstractCegarLoop]: Abstraction has 26305 states and 36125 transitions. [2020-10-28 12:34:29,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:34:29,425 INFO L276 IsEmpty]: Start isEmpty. Operand 26305 states and 36125 transitions. [2020-10-28 12:34:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-28 12:34:29,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:34:29,431 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:34:29,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:34:29,431 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:34:29,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:34:29,432 INFO L82 PathProgramCache]: Analyzing trace with hash 659549589, now seen corresponding path program 1 times [2020-10-28 12:34:29,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:34:29,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144596841] [2020-10-28 12:34:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:34:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:29,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:29,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:32,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:34,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:34,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-28 12:34:34,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:34:34,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 12:34:34,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:34,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:34:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:34:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:34:34,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:34,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:34:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:34,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:34,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:34:34,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:34,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:34:34,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:34,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:34:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:34:34,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:34:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:34,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:35,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:35,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:34:35,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:34:35,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-28 12:34:35,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:35,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:34:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:34:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:34:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:34:35,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 12:34:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:35,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:35,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:34:35,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:35,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:34:35,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:35,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:34:35,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 12:34:35,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:34:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 16 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:34:35,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144596841] [2020-10-28 12:34:35,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:34:35,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:34:35,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941880677] [2020-10-28 12:34:35,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:34:35,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:34:35,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:34:35,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:34:35,544 INFO L87 Difference]: Start difference. First operand 26305 states and 36125 transitions. Second operand 7 states. [2020-10-28 12:35:05,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:35:05,609 INFO L93 Difference]: Finished difference Result 60646 states and 84362 transitions. [2020-10-28 12:35:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:35:05,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-28 12:35:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:35:05,745 INFO L225 Difference]: With dead ends: 60646 [2020-10-28 12:35:05,745 INFO L226 Difference]: Without dead ends: 34347 [2020-10-28 12:35:05,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:35:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34347 states. [2020-10-28 12:35:06,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34347 to 33162. [2020-10-28 12:35:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33162 states. [2020-10-28 12:35:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33162 states to 33162 states and 44735 transitions. [2020-10-28 12:35:07,032 INFO L78 Accepts]: Start accepts. Automaton has 33162 states and 44735 transitions. Word has length 225 [2020-10-28 12:35:07,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:35:07,033 INFO L481 AbstractCegarLoop]: Abstraction has 33162 states and 44735 transitions. [2020-10-28 12:35:07,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:35:07,033 INFO L276 IsEmpty]: Start isEmpty. Operand 33162 states and 44735 transitions. [2020-10-28 12:35:07,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 12:35:07,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:35:07,040 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:35:07,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:35:07,044 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:35:07,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:35:07,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1988715558, now seen corresponding path program 1 times [2020-10-28 12:35:07,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:35:07,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221829106] [2020-10-28 12:35:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:35:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:07,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:12,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:12,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-28 12:35:12,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:35:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 12:35:12,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:12,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:35:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:35:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 12:35:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:35:12,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:35:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:12,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:12,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:35:12,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:12,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:35:12,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:12,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:12,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:35:12,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:12,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:35:12,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:35:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:12,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:12,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:12,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:35:12,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 12:35:12,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:12,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:35:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:35:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:35:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:12,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:35:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:12,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:12,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:35:12,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:35:12,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:12,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:35:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 12:35:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:35:12,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 12:35:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:13,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:13,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:13,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:35:13,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:35:13,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:13,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:35:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 12:35:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:35:13,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 142 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:35:13,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221829106] [2020-10-28 12:35:13,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:35:13,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:35:13,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370874780] [2020-10-28 12:35:13,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:35:13,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:35:13,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:35:13,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:35:13,293 INFO L87 Difference]: Start difference. First operand 33162 states and 44735 transitions. Second operand 7 states. [2020-10-28 12:35:13,442 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 12:35:15,811 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 12:35:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:35:37,024 INFO L93 Difference]: Finished difference Result 65881 states and 89793 transitions. [2020-10-28 12:35:37,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:35:37,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-28 12:35:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:35:37,142 INFO L225 Difference]: With dead ends: 65881 [2020-10-28 12:35:37,142 INFO L226 Difference]: Without dead ends: 33528 [2020-10-28 12:35:37,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:35:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33528 states. [2020-10-28 12:35:38,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33528 to 33275. [2020-10-28 12:35:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33275 states. [2020-10-28 12:35:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33275 states to 33275 states and 45030 transitions. [2020-10-28 12:35:38,275 INFO L78 Accepts]: Start accepts. Automaton has 33275 states and 45030 transitions. Word has length 261 [2020-10-28 12:35:38,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:35:38,276 INFO L481 AbstractCegarLoop]: Abstraction has 33275 states and 45030 transitions. [2020-10-28 12:35:38,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:35:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 33275 states and 45030 transitions. [2020-10-28 12:35:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-28 12:35:38,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:35:38,282 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:35:38,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:35:38,283 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:35:38,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:35:38,283 INFO L82 PathProgramCache]: Analyzing trace with hash -803908733, now seen corresponding path program 1 times [2020-10-28 12:35:38,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:35:38,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361782878] [2020-10-28 12:35:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:35:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:38,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking...