/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:18:40,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:18:40,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:18:40,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:18:40,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:18:40,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:18:40,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:18:40,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:18:40,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:18:40,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:18:40,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:18:40,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:18:40,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:18:40,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:18:40,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:18:40,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:18:40,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:18:40,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:18:40,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:18:40,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:18:40,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:18:40,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:18:40,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:18:40,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:18:40,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:18:40,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:18:40,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:18:40,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:18:40,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:18:40,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:18:40,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:18:40,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:18:40,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:18:40,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:18:40,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:18:40,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:18:40,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:18:40,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:18:40,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:18:40,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:18:40,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:18:40,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:18:40,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:18:40,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:18:40,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:18:40,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:18:40,836 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:18:40,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:18:40,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:18:40,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:18:40,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:18:40,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:18:40,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:18:40,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:18:40,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:18:40,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:18:40,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:18:40,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:18:40,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:18:40,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:18:40,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:18:40,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:18:40,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:18:40,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:18:40,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:18:40,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:18:40,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:18:40,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:18:40,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:18:40,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:18:40,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:18:40,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:18:41,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:18:41,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:18:41,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:18:41,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:18:41,416 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:18:41,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label57.c [2020-10-28 14:18:41,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25c36253d/39a8ff4bbd0f4327a417aab606c13cdd/FLAG61ed3f13c [2020-10-28 14:18:42,816 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:18:42,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label57.c [2020-10-28 14:18:42,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25c36253d/39a8ff4bbd0f4327a417aab606c13cdd/FLAG61ed3f13c [2020-10-28 14:18:43,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25c36253d/39a8ff4bbd0f4327a417aab606c13cdd [2020-10-28 14:18:43,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:18:43,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:18:43,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:18:43,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:18:43,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:18:43,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:18:43" (1/1) ... [2020-10-28 14:18:43,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4742c2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:43, skipping insertion in model container [2020-10-28 14:18:43,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:18:43" (1/1) ... [2020-10-28 14:18:43,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:18:43,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:18:45,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:18:45,430 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:18:46,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:18:46,968 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:18:46,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:46 WrapperNode [2020-10-28 14:18:46,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:18:46,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:18:46,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:18:46,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:18:46,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:46" (1/1) ... [2020-10-28 14:18:46,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:46" (1/1) ... [2020-10-28 14:18:47,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:46" (1/1) ... [2020-10-28 14:18:47,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:46" (1/1) ... [2020-10-28 14:18:47,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:46" (1/1) ... [2020-10-28 14:18:47,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:46" (1/1) ... [2020-10-28 14:18:47,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:46" (1/1) ... [2020-10-28 14:18:47,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:18:47,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:18:47,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:18:47,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:18:47,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:18:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:18:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:18:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:18:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:18:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:18:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:18:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:18:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:18:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:18:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:18:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:18:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:18:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:18:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:18:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:18:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:18:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:18:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:18:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:18:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:18:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:18:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:18:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:18:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:18:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:18:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:18:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:18:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:18:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:19:04,214 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:19:04,216 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:19:04,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:19:04 BoogieIcfgContainer [2020-10-28 14:19:04,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:19:04,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:19:04,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:19:04,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:19:04,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:18:43" (1/3) ... [2020-10-28 14:19:04,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395cd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:19:04, skipping insertion in model container [2020-10-28 14:19:04,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:18:46" (2/3) ... [2020-10-28 14:19:04,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395cd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:19:04, skipping insertion in model container [2020-10-28 14:19:04,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:19:04" (3/3) ... [2020-10-28 14:19:04,235 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label57.c [2020-10-28 14:19:04,253 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:19:04,261 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:19:04,275 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:19:04,314 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:19:04,314 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:19:04,314 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:19:04,314 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:19:04,315 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:19:04,315 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:19:04,315 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:19:04,315 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:19:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:19:04,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 14:19:04,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:19:04,374 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] [2020-10-28 14:19:04,375 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:19:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:19:04,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1363651350, now seen corresponding path program 1 times [2020-10-28 14:19:04,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:19:04,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106298911] [2020-10-28 14:19:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:19:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:04,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:05,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:05,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:19:05,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:05,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-28 14:19:05,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:05,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:19:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:19:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 14:19:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:19:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:19:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:05,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:05,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:19:05,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:05,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:19:05,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:05,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:19:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:19:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:19:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:19:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:19:05,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106298911] [2020-10-28 14:19:05,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:19:05,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:19:05,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893999997] [2020-10-28 14:19:05,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:19:05,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:19:05,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:19:05,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:19:05,661 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-28 14:19:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:19:43,532 INFO L93 Difference]: Finished difference Result 6484 states and 12306 transitions. [2020-10-28 14:19:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:19:43,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-28 14:19:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:19:43,599 INFO L225 Difference]: With dead ends: 6484 [2020-10-28 14:19:43,599 INFO L226 Difference]: Without dead ends: 4635 [2020-10-28 14:19:43,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:19:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2020-10-28 14:19:43,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4627. [2020-10-28 14:19:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4627 states. [2020-10-28 14:19:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7766 transitions. [2020-10-28 14:19:43,893 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7766 transitions. Word has length 63 [2020-10-28 14:19:43,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:19:43,894 INFO L481 AbstractCegarLoop]: Abstraction has 4627 states and 7766 transitions. [2020-10-28 14:19:43,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:19:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7766 transitions. [2020-10-28 14:19:43,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 14:19:43,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:19:43,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:19:43,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:19:43,904 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:19:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:19:43,905 INFO L82 PathProgramCache]: Analyzing trace with hash -700787597, now seen corresponding path program 1 times [2020-10-28 14:19:43,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:19:43,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564972157] [2020-10-28 14:19:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:19:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:47,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:47,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:47,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 14:19:47,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:19:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3189 [2020-10-28 14:19:47,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:47,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:47,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:19:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 14:19:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:19:47,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 14:19:47,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:19:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:47,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:47,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:19:47,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:19:47,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:47,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:19:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:19:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:19:47,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:19:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:19:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:19:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:19:47,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:19:47,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:19:47,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:19:47,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 14:19:47,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:19:47,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:19:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:19:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 14:19:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:19:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:19:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:19:47,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564972157] [2020-10-28 14:19:47,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:19:47,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:19:47,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086174672] [2020-10-28 14:19:47,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:19:47,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:19:47,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:19:47,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:19:47,594 INFO L87 Difference]: Start difference. First operand 4627 states and 7766 transitions. Second operand 5 states. [2020-10-28 14:20:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:20:23,968 INFO L93 Difference]: Finished difference Result 13496 states and 22983 transitions. [2020-10-28 14:20:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:20:23,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-28 14:20:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:20:24,031 INFO L225 Difference]: With dead ends: 13496 [2020-10-28 14:20:24,031 INFO L226 Difference]: Without dead ends: 8875 [2020-10-28 14:20:24,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:20:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8875 states. [2020-10-28 14:20:24,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8875 to 8860. [2020-10-28 14:20:24,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8860 states. [2020-10-28 14:20:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8860 states to 8860 states and 13052 transitions. [2020-10-28 14:20:24,361 INFO L78 Accepts]: Start accepts. Automaton has 8860 states and 13052 transitions. Word has length 136 [2020-10-28 14:20:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:20:24,365 INFO L481 AbstractCegarLoop]: Abstraction has 8860 states and 13052 transitions. [2020-10-28 14:20:24,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:20:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8860 states and 13052 transitions. [2020-10-28 14:20:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 14:20:24,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:20:24,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:20:24,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:20:24,384 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:20:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:20:24,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2073975617, now seen corresponding path program 1 times [2020-10-28 14:20:24,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:20:24,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588775049] [2020-10-28 14:20:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:20:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:20:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:24,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:25,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:20:25,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 14:20:25,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:20:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1349 [2020-10-28 14:20:25,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:20:25,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:20:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:20:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:20:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 14:20:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:20:25,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:20:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:20:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:25,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:20:25,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:20:25,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:20:25,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:20:25,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:20:25,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:20:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:20:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:20:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:20:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:20:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:20:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:20:26,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:20:26,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:20:26,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 14:20:26,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:20:26,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 14:20:26,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:20:26,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:20:26,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:20:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:20:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 14:20:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:20:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:20:26,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588775049] [2020-10-28 14:20:26,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:20:26,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:20:26,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861874927] [2020-10-28 14:20:26,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:20:26,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:20:26,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:20:26,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:20:26,351 INFO L87 Difference]: Start difference. First operand 8860 states and 13052 transitions. Second operand 7 states. [2020-10-28 14:21:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:21:22,904 INFO L93 Difference]: Finished difference Result 26659 states and 40487 transitions. [2020-10-28 14:21:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:21:22,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-10-28 14:21:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:21:23,012 INFO L225 Difference]: With dead ends: 26659 [2020-10-28 14:21:23,012 INFO L226 Difference]: Without dead ends: 17805 [2020-10-28 14:21:23,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:21:23,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17805 states. [2020-10-28 14:21:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17805 to 17651. [2020-10-28 14:21:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17651 states. [2020-10-28 14:21:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17651 states to 17651 states and 23721 transitions. [2020-10-28 14:21:23,608 INFO L78 Accepts]: Start accepts. Automaton has 17651 states and 23721 transitions. Word has length 167 [2020-10-28 14:21:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:21:23,611 INFO L481 AbstractCegarLoop]: Abstraction has 17651 states and 23721 transitions. [2020-10-28 14:21:23,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:21:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 17651 states and 23721 transitions. [2020-10-28 14:21:23,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-28 14:21:23,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:21:23,626 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:21:23,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:21:23,626 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:21:23,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:21:23,627 INFO L82 PathProgramCache]: Analyzing trace with hash -462877525, now seen corresponding path program 1 times [2020-10-28 14:21:23,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:21:23,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733344853] [2020-10-28 14:21:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:21:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:21:23,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:23,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:26,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:28,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:21:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-28 14:21:28,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:21:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4796 [2020-10-28 14:21:28,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:21:28,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:21:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:21:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-28 14:21:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:21:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:21:28,629 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:21:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:21:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:21:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:28,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:21:28,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:21:28,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:21:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:21:28,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:21:28,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:21:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:21:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:21:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:21:28,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:21:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:21:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:21:28,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:28,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:21:28,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 14:21:28,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:21:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:21:28,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:21:28,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:21:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:21:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:21:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:21:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:21:28,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 14:21:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:21:28,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:21:28,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:21:28,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:21:28,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:21:28,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 14:21:28,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:21:28,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:21:28,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:21:28,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 14:21:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:21:28,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:21:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 14:21:28,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733344853] [2020-10-28 14:21:28,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:21:28,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:21:28,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825760953] [2020-10-28 14:21:28,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:21:28,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:21:28,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:21:28,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:21:28,930 INFO L87 Difference]: Start difference. First operand 17651 states and 23721 transitions. Second operand 5 states. [2020-10-28 14:21:29,092 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:22:33,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:22:33,182 INFO L93 Difference]: Finished difference Result 52424 states and 72554 transitions. [2020-10-28 14:22:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:22:33,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-28 14:22:33,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:22:33,342 INFO L225 Difference]: With dead ends: 52424 [2020-10-28 14:22:33,342 INFO L226 Difference]: Without dead ends: 34779 [2020-10-28 14:22:33,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:22:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34779 states. [2020-10-28 14:22:34,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34779 to 33284. [2020-10-28 14:22:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33284 states. [2020-10-28 14:22:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33284 states to 33284 states and 44383 transitions. [2020-10-28 14:22:34,616 INFO L78 Accepts]: Start accepts. Automaton has 33284 states and 44383 transitions. Word has length 232 [2020-10-28 14:22:34,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:22:34,619 INFO L481 AbstractCegarLoop]: Abstraction has 33284 states and 44383 transitions. [2020-10-28 14:22:34,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:22:34,619 INFO L276 IsEmpty]: Start isEmpty. Operand 33284 states and 44383 transitions. [2020-10-28 14:22:34,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-28 14:22:34,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:22:34,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:22:34,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:22:34,628 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:22:34,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:22:34,629 INFO L82 PathProgramCache]: Analyzing trace with hash -540632420, now seen corresponding path program 1 times [2020-10-28 14:22:34,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:22:34,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523961522] [2020-10-28 14:22:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:22:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:22:34,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:22:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:22:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:22:37,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:22:37,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 14:22:37,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:22:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2380 [2020-10-28 14:22:37,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:22:37,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:22:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:22:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:22:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 14:22:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:22:37,327 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:22:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:22:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:22:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:22:37,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:22:37,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:22:37,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:22:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:22:37,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:22:37,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:22:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:22:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:22:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:22:37,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:22:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:22:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:22:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:22:37,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:22:37,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 14:22:37,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:22:37,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-28 14:22:37,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:22:37,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:22:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:22:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:22:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-28 14:22:37,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:22:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:22:38,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523961522] [2020-10-28 14:22:38,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:22:38,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:22:38,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18779073] [2020-10-28 14:22:38,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:22:38,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:22:38,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:22:38,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:22:38,132 INFO L87 Difference]: Start difference. First operand 33284 states and 44383 transitions. Second operand 7 states. [2020-10-28 14:22:38,333 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 66