/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/Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:39:05,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:39:05,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:39:05,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:39:05,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:39:05,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:39:05,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:39:05,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:39:05,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:39:05,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:39:05,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:39:05,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:39:05,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:39:05,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:39:05,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:39:05,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:39:05,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:39:05,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:39:05,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:39:05,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:39:05,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:39:05,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:39:05,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:39:05,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:39:05,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:39:05,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:39:05,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:39:05,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:39:05,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:39:05,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:39:05,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:39:05,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:39:05,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:39:05,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:39:05,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:39:05,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:39:05,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:39:05,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:39:05,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:39:05,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:39:05,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:39:05,887 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 17:39:05,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:39:05,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:39:05,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:39:05,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:39:05,920 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:39:05,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:39:05,920 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:39:05,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:39:05,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:39:05,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:39:05,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:39:05,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:39:05,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:39:05,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:39:05,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:39:05,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:39:05,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:39:05,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:39:05,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:39:05,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:39:05,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:39:05,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:39:05,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:39:05,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:39:05,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:39:05,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:39:05,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:39:05,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:39:05,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:39:05,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:39:06,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:39:06,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:39:06,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:39:06,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:39:06,399 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:39:06,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2020-10-27 17:39:06,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a853cd9f8/b57208b0b09846698d4ce8c4f98f51a0/FLAG8b064d6b9 [2020-10-27 17:39:07,719 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:39:07,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2020-10-27 17:39:07,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a853cd9f8/b57208b0b09846698d4ce8c4f98f51a0/FLAG8b064d6b9 [2020-10-27 17:39:08,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a853cd9f8/b57208b0b09846698d4ce8c4f98f51a0 [2020-10-27 17:39:08,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:39:08,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:39:08,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:39:08,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:39:08,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:39:08,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:39:08" (1/1) ... [2020-10-27 17:39:08,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a72641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:08, skipping insertion in model container [2020-10-27 17:39:08,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:39:08" (1/1) ... [2020-10-27 17:39:08,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:39:08,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:39:09,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:39:09,584 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:39:10,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:39:10,297 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:39:10,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:10 WrapperNode [2020-10-27 17:39:10,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:39:10,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:39:10,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:39:10,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:39:10,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:10" (1/1) ... [2020-10-27 17:39:10,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:10" (1/1) ... [2020-10-27 17:39:10,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:10" (1/1) ... [2020-10-27 17:39:10,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:10" (1/1) ... [2020-10-27 17:39:10,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:10" (1/1) ... [2020-10-27 17:39:10,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:10" (1/1) ... [2020-10-27 17:39:10,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:10" (1/1) ... [2020-10-27 17:39:10,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:39:10,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:39:10,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:39:10,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:39:10,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:10" (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 17:39:10,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:39:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:39:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:39:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:39:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:39:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:39:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:39:10,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:39:10,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:39:10,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:39:10,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:39:10,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:39:10,642 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:39:10,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:39:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:39:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:39:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:39:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:39:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:39:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:39:10,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:39:10,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:39:10,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:39:10,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:39:10,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:39:16,672 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:39:16,673 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:39:16,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:39:16 BoogieIcfgContainer [2020-10-27 17:39:16,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:39:16,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:39:16,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:39:16,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:39:16,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:39:08" (1/3) ... [2020-10-27 17:39:16,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50117567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:39:16, skipping insertion in model container [2020-10-27 17:39:16,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:39:10" (2/3) ... [2020-10-27 17:39:16,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50117567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:39:16, skipping insertion in model container [2020-10-27 17:39:16,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:39:16" (3/3) ... [2020-10-27 17:39:16,693 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label09.c [2020-10-27 17:39:16,706 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:39:16,713 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:39:16,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:39:16,768 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:39:16,768 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:39:16,768 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:39:16,769 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:39:16,769 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:39:16,769 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:39:16,769 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:39:16,769 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:39:16,810 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:39:16,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 17:39:16,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:16,823 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] [2020-10-27 17:39:16,824 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:16,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:16,832 INFO L82 PathProgramCache]: Analyzing trace with hash -387387116, now seen corresponding path program 1 times [2020-10-27 17:39:16,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:16,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190373881] [2020-10-27 17:39:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:17,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:17,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 17:39:17,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:17,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-27 17:39:17,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:39:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:39:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 17:39:17,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:39:18,098 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:39:18,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:18,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:18,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:18,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 17:39:18,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:39:18,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:39:18,220 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 17:39:18,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190373881] [2020-10-27 17:39:18,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:39:18,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 17:39:18,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194547804] [2020-10-27 17:39:18,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:39:18,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:18,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:39:18,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:39:18,255 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-27 17:39:18,435 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:39:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:28,761 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:39:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:39:28,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-27 17:39:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:28,803 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:39:28,804 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:39:28,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:39:28,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:39:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:39:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:39:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-27 17:39:29,014 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 73 [2020-10-27 17:39:29,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:29,016 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-27 17:39:29,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:39:29,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-27 17:39:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 17:39:29,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:29,032 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, 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] [2020-10-27 17:39:29,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:39:29,033 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:29,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash 837735313, now seen corresponding path program 1 times [2020-10-27 17:39:29,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:29,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872240345] [2020-10-27 17:39:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:30,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:30,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 17:39:30,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:39:30,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-27 17:39:30,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:30,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 17:39:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 17:39:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 17:39:30,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:30,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:30,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:30,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:39:30,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 17:39:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:30,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:30,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:39:30,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:30,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 17:39:30,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:39:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:39:30,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872240345] [2020-10-27 17:39:30,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:30,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:39:30,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211547774] [2020-10-27 17:39:30,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:39:30,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:30,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:39:30,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:39:30,983 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 5 states. [2020-10-27 17:39:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:42,927 INFO L93 Difference]: Finished difference Result 4674 states and 8594 transitions. [2020-10-27 17:39:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:39:42,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-27 17:39:42,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:42,955 INFO L225 Difference]: With dead ends: 4674 [2020-10-27 17:39:42,956 INFO L226 Difference]: Without dead ends: 3126 [2020-10-27 17:39:42,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:39:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2020-10-27 17:39:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3109. [2020-10-27 17:39:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-27 17:39:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4807 transitions. [2020-10-27 17:39:43,062 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4807 transitions. Word has length 146 [2020-10-27 17:39:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:43,063 INFO L481 AbstractCegarLoop]: Abstraction has 3109 states and 4807 transitions. [2020-10-27 17:39:43,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:39:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4807 transitions. [2020-10-27 17:39:43,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 17:39:43,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:43,066 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, 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] [2020-10-27 17:39:43,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:39:43,067 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:43,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:43,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1801977963, now seen corresponding path program 1 times [2020-10-27 17:39:43,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:43,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832913330] [2020-10-27 17:39:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:43,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:44,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:44,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 17:39:44,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:39:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-10-27 17:39:44,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:39:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 17:39:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:44,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:44,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:44,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:44,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:44,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:39:44,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:44,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:44,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:44,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:44,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:44,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:39:44,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:44,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 17:39:44,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:44,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:44,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:44,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:39:44,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:39:44,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832913330] [2020-10-27 17:39:44,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:44,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:39:44,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041865569] [2020-10-27 17:39:44,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:39:44,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:44,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:39:44,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:39:44,754 INFO L87 Difference]: Start difference. First operand 3109 states and 4807 transitions. Second operand 5 states. [2020-10-27 17:39:45,243 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 17:39:52,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:52,820 INFO L93 Difference]: Finished difference Result 6276 states and 9711 transitions. [2020-10-27 17:39:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:39:52,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-27 17:39:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:52,845 INFO L225 Difference]: With dead ends: 6276 [2020-10-27 17:39:52,845 INFO L226 Difference]: Without dead ends: 3126 [2020-10-27 17:39:52,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:39:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2020-10-27 17:39:52,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3109. [2020-10-27 17:39:52,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-27 17:39:52,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4502 transitions. [2020-10-27 17:39:52,969 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4502 transitions. Word has length 148 [2020-10-27 17:39:52,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:52,971 INFO L481 AbstractCegarLoop]: Abstraction has 3109 states and 4502 transitions. [2020-10-27 17:39:52,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:39:52,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4502 transitions. [2020-10-27 17:39:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 17:39:52,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:52,983 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, 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] [2020-10-27 17:39:52,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:39:52,983 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:52,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2088277261, now seen corresponding path program 1 times [2020-10-27 17:39:52,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:52,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671000172] [2020-10-27 17:39:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:53,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:53,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:53,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 17:39:53,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:39:53,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-27 17:39:53,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:53,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 17:39:53,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 17:39:53,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:54,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:54,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:54,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:39:54,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:54,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:54,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 17:39:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 17:39:54,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 17:39:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:39:54,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671000172] [2020-10-27 17:39:54,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:54,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:39:54,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419854454] [2020-10-27 17:39:54,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:39:54,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:54,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:39:54,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:39:54,277 INFO L87 Difference]: Start difference. First operand 3109 states and 4502 transitions. Second operand 5 states. [2020-10-27 17:40:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:06,109 INFO L93 Difference]: Finished difference Result 9346 states and 13781 transitions. [2020-10-27 17:40:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:40:06,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 17:40:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:06,149 INFO L225 Difference]: With dead ends: 9346 [2020-10-27 17:40:06,150 INFO L226 Difference]: Without dead ends: 6243 [2020-10-27 17:40:06,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:40:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6243 states. [2020-10-27 17:40:06,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6243 to 6218. [2020-10-27 17:40:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-10-27 17:40:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 8421 transitions. [2020-10-27 17:40:06,310 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 8421 transitions. Word has length 149 [2020-10-27 17:40:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:06,311 INFO L481 AbstractCegarLoop]: Abstraction has 6218 states and 8421 transitions. [2020-10-27 17:40:06,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:40:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 8421 transitions. [2020-10-27 17:40:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 17:40:06,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:06,314 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, 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] [2020-10-27 17:40:06,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:40:06,315 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash -923696191, now seen corresponding path program 1 times [2020-10-27 17:40:06,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:06,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853216702] [2020-10-27 17:40:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:08,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:08,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 17:40:08,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:40:08,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1985 [2020-10-27 17:40:08,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 17:40:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 17:40:08,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:08,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:08,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:08,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:08,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:40:08,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:08,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:08,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:08,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 17:40:08,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:08,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 17:40:08,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 17:40:08,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:40:08,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853216702] [2020-10-27 17:40:08,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:08,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:40:08,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553311343] [2020-10-27 17:40:08,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:40:08,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:08,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:40:08,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:40:08,664 INFO L87 Difference]: Start difference. First operand 6218 states and 8421 transitions. Second operand 5 states. [2020-10-27 17:40:22,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:22,129 INFO L93 Difference]: Finished difference Result 18689 states and 26060 transitions. [2020-10-27 17:40:22,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:40:22,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-27 17:40:22,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:22,213 INFO L225 Difference]: With dead ends: 18689 [2020-10-27 17:40:22,214 INFO L226 Difference]: Without dead ends: 12477 [2020-10-27 17:40:22,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:40:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12477 states. [2020-10-27 17:40:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12477 to 12445. [2020-10-27 17:40:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12445 states. [2020-10-27 17:40:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12445 states to 12445 states and 16631 transitions. [2020-10-27 17:40:22,631 INFO L78 Accepts]: Start accepts. Automaton has 12445 states and 16631 transitions. Word has length 170 [2020-10-27 17:40:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:22,632 INFO L481 AbstractCegarLoop]: Abstraction has 12445 states and 16631 transitions. [2020-10-27 17:40:22,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:40:22,632 INFO L276 IsEmpty]: Start isEmpty. Operand 12445 states and 16631 transitions. [2020-10-27 17:40:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-27 17:40:22,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:22,648 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, 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] [2020-10-27 17:40:22,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:40:22,649 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:22,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:22,649 INFO L82 PathProgramCache]: Analyzing trace with hash 212010637, now seen corresponding path program 1 times [2020-10-27 17:40:22,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:22,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642794701] [2020-10-27 17:40:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:23,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:27,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:27,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-27 17:40:27,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:40:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4573 [2020-10-27 17:40:27,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-27 17:40:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 17:40:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:27,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:27,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:27,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:27,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:27,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:27,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:40:27,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:27,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:28,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:28,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 17:40:28,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:28,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-27 17:40:28,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-27 17:40:28,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:40:28,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642794701] [2020-10-27 17:40:28,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:28,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:40:28,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234061626] [2020-10-27 17:40:28,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:40:28,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:28,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:40:28,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:40:28,347 INFO L87 Difference]: Start difference. First operand 12445 states and 16631 transitions. Second operand 5 states. [2020-10-27 17:40:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:42,822 INFO L93 Difference]: Finished difference Result 31131 states and 42756 transitions. [2020-10-27 17:40:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:40:42,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2020-10-27 17:40:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:42,901 INFO L225 Difference]: With dead ends: 31131 [2020-10-27 17:40:42,902 INFO L226 Difference]: Without dead ends: 18692 [2020-10-27 17:40:42,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:40:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18692 states. [2020-10-27 17:40:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18692 to 18668. [2020-10-27 17:40:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18668 states. [2020-10-27 17:40:43,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18668 states to 18668 states and 25026 transitions. [2020-10-27 17:40:43,472 INFO L78 Accepts]: Start accepts. Automaton has 18668 states and 25026 transitions. Word has length 341 [2020-10-27 17:40:43,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:43,473 INFO L481 AbstractCegarLoop]: Abstraction has 18668 states and 25026 transitions. [2020-10-27 17:40:43,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:40:43,473 INFO L276 IsEmpty]: Start isEmpty. Operand 18668 states and 25026 transitions. [2020-10-27 17:40:43,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2020-10-27 17:40:43,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:43,532 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:40:43,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:40:43,533 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:43,533 INFO L82 PathProgramCache]: Analyzing trace with hash -186827862, now seen corresponding path program 1 times [2020-10-27 17:40:43,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:43,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836171161] [2020-10-27 17:40:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:48,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:48,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 642 [2020-10-27 17:40:48,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:40:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 17:40:48,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:40:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 17:40:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 479 [2020-10-27 17:40:48,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:48,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:48,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:48,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:40:48,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:49,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:49,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 17:40:49,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 17:40:49,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 17:40:49,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 17:40:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:49,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:50,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:50,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-27 17:40:50,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:50,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1688 [2020-10-27 17:40:50,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:50,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:40:50,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:40:50,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 480 [2020-10-27 17:40:50,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:51,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:40:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:51,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:51,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 17:40:51,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:51,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-27 17:40:51,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:40:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:40:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 17:40:51,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:40:52,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836171161] [2020-10-27 17:40:52,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:52,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:40:52,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517729088] [2020-10-27 17:40:52,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:40:52,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:52,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:40:52,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:40:52,751 INFO L87 Difference]: Start difference. First operand 18668 states and 25026 transitions. Second operand 7 states. [2020-10-27 17:41:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:41:17,128 INFO L93 Difference]: Finished difference Result 54151 states and 80340 transitions. [2020-10-27 17:41:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:41:17,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 626 [2020-10-27 17:41:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:41:17,332 INFO L225 Difference]: With dead ends: 54151 [2020-10-27 17:41:17,332 INFO L226 Difference]: Without dead ends: 35489 [2020-10-27 17:41:17,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:41:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35489 states. [2020-10-27 17:41:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35489 to 35373. [2020-10-27 17:41:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35373 states. [2020-10-27 17:41:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35373 states to 35373 states and 48250 transitions. [2020-10-27 17:41:18,743 INFO L78 Accepts]: Start accepts. Automaton has 35373 states and 48250 transitions. Word has length 626 [2020-10-27 17:41:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:41:18,745 INFO L481 AbstractCegarLoop]: Abstraction has 35373 states and 48250 transitions. [2020-10-27 17:41:18,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:41:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 35373 states and 48250 transitions. [2020-10-27 17:41:18,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2020-10-27 17:41:18,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:41:18,908 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:41:18,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:41:18,909 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:41:18,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:41:18,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1099963855, now seen corresponding path program 1 times [2020-10-27 17:41:18,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:41:18,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483515775] [2020-10-27 17:41:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:41:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:22,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:23,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:24,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:24,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 725 [2020-10-27 17:41:24,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:41:24,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 17:41:24,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:24,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:24,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 17:41:24,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 17:41:24,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:24,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:24,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:24,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:24,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:41:24,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:24,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:24,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:24,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 17:41:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 17:41:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 17:41:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:24,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 17:41:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:24,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:24,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:41:24,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:24,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 17:41:24,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:24,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:24,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:41:24,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 17:41:24,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-27 17:41:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:24,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:24,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:24,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-27 17:41:24,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:24,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 17:41:24,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:24,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 477 [2020-10-27 17:41:24,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:24,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:24,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:41:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:25,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:25,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 17:41:25,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:25,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 17:41:25,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:25,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 272 proven. 80 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 17:41:25,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483515775] [2020-10-27 17:41:25,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:41:25,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:41:25,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616167625] [2020-10-27 17:41:25,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:41:25,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:41:25,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:41:25,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:41:25,626 INFO L87 Difference]: Start difference. First operand 35373 states and 48250 transitions. Second operand 7 states. [2020-10-27 17:41:49,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:41:49,092 INFO L93 Difference]: Finished difference Result 88110 states and 122120 transitions. [2020-10-27 17:41:49,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:41:49,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 707 [2020-10-27 17:41:49,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:41:49,314 INFO L225 Difference]: With dead ends: 88110 [2020-10-27 17:41:49,314 INFO L226 Difference]: Without dead ends: 52747 [2020-10-27 17:41:49,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:41:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52747 states. [2020-10-27 17:41:51,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52747 to 48051. [2020-10-27 17:41:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48051 states. [2020-10-27 17:41:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48051 states to 48051 states and 62858 transitions. [2020-10-27 17:41:51,441 INFO L78 Accepts]: Start accepts. Automaton has 48051 states and 62858 transitions. Word has length 707 [2020-10-27 17:41:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:41:51,445 INFO L481 AbstractCegarLoop]: Abstraction has 48051 states and 62858 transitions. [2020-10-27 17:41:51,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:41:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 48051 states and 62858 transitions. [2020-10-27 17:41:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2020-10-27 17:41:51,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:41:51,628 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:41:51,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:41:51,629 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:41:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:41:51,630 INFO L82 PathProgramCache]: Analyzing trace with hash 845905267, now seen corresponding path program 1 times [2020-10-27 17:41:51,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:41:51,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871449029] [2020-10-27 17:41:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:41:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:56,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 738 [2020-10-27 17:41:56,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:41:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 17:41:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:41:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 17:41:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 562 [2020-10-27 17:41:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:57,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:57,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:57,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:57,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:57,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:41:57,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:57,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:57,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:57,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:57,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 17:41:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 17:41:57,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 17:41:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:57,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 17:41:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:57,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:57,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:57,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:41:57,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:41:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 17:41:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:41:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 17:41:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:57,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-27 17:41:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:57,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:58,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:58,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-27 17:41:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-27 17:41:58,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:41:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:41:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 480 [2020-10-27 17:41:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:58,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:41:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:58,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:58,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:58,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 17:41:58,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 17:41:58,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:41:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:41:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 17:41:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 359 proven. 6 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 17:41:59,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871449029] [2020-10-27 17:41:59,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:41:59,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:41:59,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679632483] [2020-10-27 17:41:59,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:41:59,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:41:59,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:41:59,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:41:59,514 INFO L87 Difference]: Start difference. First operand 48051 states and 62858 transitions. Second operand 7 states. [2020-10-27 17:42:15,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:15,974 INFO L93 Difference]: Finished difference Result 99757 states and 136495 transitions. [2020-10-27 17:42:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:42:15,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 720 [2020-10-27 17:42:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:16,146 INFO L225 Difference]: With dead ends: 99757 [2020-10-27 17:42:16,146 INFO L226 Difference]: Without dead ends: 46967 [2020-10-27 17:42:16,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:42:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46967 states. [2020-10-27 17:42:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46967 to 46003. [2020-10-27 17:42:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46003 states. [2020-10-27 17:42:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46003 states to 46003 states and 57853 transitions. [2020-10-27 17:42:17,398 INFO L78 Accepts]: Start accepts. Automaton has 46003 states and 57853 transitions. Word has length 720 [2020-10-27 17:42:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:17,398 INFO L481 AbstractCegarLoop]: Abstraction has 46003 states and 57853 transitions. [2020-10-27 17:42:17,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:42:17,399 INFO L276 IsEmpty]: Start isEmpty. Operand 46003 states and 57853 transitions. [2020-10-27 17:42:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2020-10-27 17:42:17,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:17,467 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:17,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:42:17,468 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:17,468 INFO L82 PathProgramCache]: Analyzing trace with hash 585359289, now seen corresponding path program 1 times [2020-10-27 17:42:17,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:17,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270934392] [2020-10-27 17:42:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:17,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:22,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:22,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 759 [2020-10-27 17:42:22,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:42:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 17:42:22,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:42:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-27 17:42:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 479 [2020-10-27 17:42:22,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:22,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:22,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:22,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:42:22,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:22,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:22,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:22,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 17:42:22,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:22,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 17:42:22,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:22,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:22,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 17:42:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:22,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:22,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:42:22,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 17:42:22,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 17:42:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:23,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 17:42:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:23,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:23,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-27 17:42:23,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-27 17:42:23,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:42:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:42:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 480 [2020-10-27 17:42:23,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:23,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:42:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:24,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:24,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 17:42:24,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:24,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-27 17:42:24,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:42:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:42:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 17:42:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 17:42:25,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270934392] [2020-10-27 17:42:25,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:25,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 17:42:25,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560494659] [2020-10-27 17:42:25,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 17:42:25,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:25,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 17:42:25,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 17:42:25,571 INFO L87 Difference]: Start difference. First operand 46003 states and 57853 transitions. Second operand 9 states.