/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:30:04,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:30:04,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:30:04,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:30:04,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:30:04,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:30:04,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:30:04,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:30:04,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:30:04,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:30:04,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:30:04,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:30:04,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:30:04,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:30:04,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:30:04,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:30:04,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:30:04,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:30:04,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:30:04,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:30:04,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:30:04,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:30:04,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:30:04,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:30:04,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:30:04,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:30:04,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:30:04,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:30:04,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:30:04,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:30:04,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:30:04,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:30:04,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:30:04,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:30:04,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:30:04,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:30:04,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:30:04,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:30:04,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:30:04,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:30:04,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:30:04,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:30:04,933 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:30:04,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:30:04,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:30:04,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:30:04,938 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:30:04,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:30:04,939 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:30:04,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:30:04,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:30:04,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:30:04,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:30:04,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:30:04,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:30:04,941 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:30:04,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:30:04,941 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:30:04,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:30:04,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:30:04,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:30:04,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:30:04,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:30:04,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:30:04,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:30:04,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:30:04,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:30:04,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:30:04,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:30:04,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:30:04,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:30:04,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:30:05,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:30:05,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:30:05,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:30:05,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:30:05,383 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:30:05,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label45.c [2020-10-29 05:30:05,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6ee48aea/f0c9ee729ff9444b8212f89d61cf25ef/FLAG2b367f815 [2020-10-29 05:30:06,843 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:30:06,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label45.c [2020-10-29 05:30:06,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6ee48aea/f0c9ee729ff9444b8212f89d61cf25ef/FLAG2b367f815 [2020-10-29 05:30:07,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6ee48aea/f0c9ee729ff9444b8212f89d61cf25ef [2020-10-29 05:30:07,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:30:07,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:30:07,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:30:07,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:30:07,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:30:07,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:30:07" (1/1) ... [2020-10-29 05:30:07,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df18323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:07, skipping insertion in model container [2020-10-29 05:30:07,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:30:07" (1/1) ... [2020-10-29 05:30:07,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:30:07,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:30:10,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:30:10,180 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:30:11,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:30:11,419 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:30:11,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:11 WrapperNode [2020-10-29 05:30:11,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:30:11,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:30:11,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:30:11,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:30:11,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:11" (1/1) ... [2020-10-29 05:30:11,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:11" (1/1) ... [2020-10-29 05:30:11,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:11" (1/1) ... [2020-10-29 05:30:11,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:11" (1/1) ... [2020-10-29 05:30:11,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:11" (1/1) ... [2020-10-29 05:30:11,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:11" (1/1) ... [2020-10-29 05:30:12,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:11" (1/1) ... [2020-10-29 05:30:12,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:30:12,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:30:12,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:30:12,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:30:12,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:30:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:30:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:30:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:30:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:30:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:30:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:30:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:30:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:30:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:30:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:30:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:30:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:30:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:30:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:30:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:30:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:30:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:30:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:30:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:30:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:30:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:30:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:30:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:30:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:30:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:30:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:30:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:30:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:30:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:30:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:30:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:30:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:30:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:30:26,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:30:26,986 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:30:26,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:30:26 BoogieIcfgContainer [2020-10-29 05:30:26,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:30:26,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:30:26,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:30:27,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:30:27,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:30:07" (1/3) ... [2020-10-29 05:30:27,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214d958b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:30:27, skipping insertion in model container [2020-10-29 05:30:27,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:11" (2/3) ... [2020-10-29 05:30:27,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214d958b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:30:27, skipping insertion in model container [2020-10-29 05:30:27,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:30:26" (3/3) ... [2020-10-29 05:30:27,006 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45.c [2020-10-29 05:30:27,019 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:30:27,026 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:30:27,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:30:27,084 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:30:27,084 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:30:27,084 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:30:27,084 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:30:27,085 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:30:27,085 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:30:27,085 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:30:27,085 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:30:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:30:27,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1697 [2020-10-29 05:30:27,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:30:27,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:30:27,352 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:30:27,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:30:27,371 INFO L82 PathProgramCache]: Analyzing trace with hash -821923961, now seen corresponding path program 1 times [2020-10-29 05:30:27,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:30:27,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746195558] [2020-10-29 05:30:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:30:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:29,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:34,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:34,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1720 [2020-10-29 05:30:34,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:30:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5332 [2020-10-29 05:30:34,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:34,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:34,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:30:34,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:30:34,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1711 [2020-10-29 05:30:34,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:30:35,793 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:30:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:30:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:35,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:35,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:30:35,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:30:35,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 05:30:35,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:35,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:30:35,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:30:35,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:30:35,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:30:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:30:38,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746195558] [2020-10-29 05:30:38,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:30:38,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:30:38,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14099021] [2020-10-29 05:30:38,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:30:38,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:30:38,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:30:38,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:30:38,940 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:30:39,152 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 05:31:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:31:12,018 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-29 05:31:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:31:12,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1696 [2020-10-29 05:31:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:31:12,074 INFO L225 Difference]: With dead ends: 6315 [2020-10-29 05:31:12,074 INFO L226 Difference]: Without dead ends: 4025 [2020-10-29 05:31:12,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:31:12,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-29 05:31:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-29 05:31:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-29 05:31:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-29 05:31:12,347 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1696 [2020-10-29 05:31:12,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:31:12,354 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-29 05:31:12,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:31:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-29 05:31:12,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2020-10-29 05:31:12,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:31:12,615 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:31:12,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:31:12,615 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:31:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:31:12,617 INFO L82 PathProgramCache]: Analyzing trace with hash 2084713859, now seen corresponding path program 1 times [2020-10-29 05:31:12,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:31:12,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099208405] [2020-10-29 05:31:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:31:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:15,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:18,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:18,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1731 [2020-10-29 05:31:18,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:31:18,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-29 05:31:18,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:18,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:18,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:31:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:31:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1708 [2020-10-29 05:31:18,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:31:20,116 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:31:20,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:31:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:20,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:20,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:31:20,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:20,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:31:20,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:20,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:31:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:31:20,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:31:20,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:31:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:20,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:20,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:20,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:31:20,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:20,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:31:20,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:20,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:31:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:31:20,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:31:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:31:23,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099208405] [2020-10-29 05:31:23,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:31:23,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:31:23,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420543591] [2020-10-29 05:31:23,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:31:23,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:31:23,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:31:23,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:31:23,610 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 6 states. [2020-10-29 05:31:23,805 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 05:31:24,092 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 05:32:14,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:32:14,886 INFO L93 Difference]: Finished difference Result 11562 states and 19814 transitions. [2020-10-29 05:32:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:32:14,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1705 [2020-10-29 05:32:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:32:14,933 INFO L225 Difference]: With dead ends: 11562 [2020-10-29 05:32:14,933 INFO L226 Difference]: Without dead ends: 7570 [2020-10-29 05:32:14,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:32:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7570 states. [2020-10-29 05:32:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7570 to 7553. [2020-10-29 05:32:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7553 states. [2020-10-29 05:32:15,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7553 states to 7553 states and 11722 transitions. [2020-10-29 05:32:15,134 INFO L78 Accepts]: Start accepts. Automaton has 7553 states and 11722 transitions. Word has length 1705 [2020-10-29 05:32:15,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:32:15,138 INFO L481 AbstractCegarLoop]: Abstraction has 7553 states and 11722 transitions. [2020-10-29 05:32:15,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:32:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7553 states and 11722 transitions. [2020-10-29 05:32:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2020-10-29 05:32:15,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:32:15,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:32:15,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:32:15,272 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:32:15,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:32:15,274 INFO L82 PathProgramCache]: Analyzing trace with hash -207319244, now seen corresponding path program 1 times [2020-10-29 05:32:15,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:32:15,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546552349] [2020-10-29 05:32:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:32:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:15,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:15,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:20,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:20,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1748 [2020-10-29 05:32:20,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:32:20,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5186 [2020-10-29 05:32:20,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:20,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:32:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:32:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-29 05:32:20,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:32:24,986 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2020-10-29 05:32:25,173 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-29 05:32:25,430 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-29 05:32:25,694 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-29 05:32:25,899 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-29 05:32:26,109 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-29 05:32:26,316 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-29 05:32:26,539 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-29 05:32:26,758 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-29 05:32:27,433 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-29 05:32:27,774 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-10-29 05:32:28,197 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 40 [2020-10-29 05:32:28,471 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 33 [2020-10-29 05:32:28,984 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:32:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:32:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:28,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:29,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:29,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:32:29,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:32:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 05:32:29,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:29,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:32:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:32:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:32:29,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:32:29,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:32:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:29,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:29,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:32:29,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:32:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:32:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:32:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:32:29,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 05:32:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:29,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:29,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:32:29,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:32:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:32:29,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:29,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:32:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:32:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:32:29,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:32:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 05:32:53,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546552349] [2020-10-29 05:32:53,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:32:53,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:32:53,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678616390] [2020-10-29 05:32:53,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:32:53,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:32:53,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:32:53,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:32:53,186 INFO L87 Difference]: Start difference. First operand 7553 states and 11722 transitions. Second operand 23 states. [2020-10-29 05:32:54,520 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:32:54,954 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 05:32:57,283 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 05:33:11,816 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:33:12,250 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:33:28,735 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:33:29,158 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:33:37,344 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 05:33:37,926 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:33:46,027 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:33:46,449 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 107