/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:33:39,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:33:39,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:33:39,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:33:39,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:33:39,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:33:39,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:33:39,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:33:39,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:33:39,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:33:39,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:33:39,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:33:39,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:33:39,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:33:39,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:33:39,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:33:39,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:33:39,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:33:39,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:33:39,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:33:39,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:33:39,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:33:39,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:33:39,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:33:39,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:33:39,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:33:39,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:33:39,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:33:39,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:33:39,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:33:39,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:33:39,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:33:39,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:33:39,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:33:39,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:33:39,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:33:39,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:33:39,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:33:39,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:33:39,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:33:39,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:33:39,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:33:39,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:33:39,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:33:39,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:33:39,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:33:39,986 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:33:39,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:33:39,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:33:39,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:33:39,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:33:39,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:33:39,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:33:39,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:33:39,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:33:39,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:33:39,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:33:39,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:33:39,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:33:39,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:33:39,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:33:39,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:33:39,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:33:39,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:33:39,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:33:39,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:33:39,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:33:39,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:33:39,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:33:39,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:33:39,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:33:39,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:33:40,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:33:40,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:33:40,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:33:40,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:33:40,473 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:33:40,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54.c [2020-10-27 19:33:40,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94c6b9557/9d3a1890388c4c0dbf3ab7eb90ac335a/FLAG1f3307afd [2020-10-27 19:33:41,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:33:41,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label54.c [2020-10-27 19:33:42,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94c6b9557/9d3a1890388c4c0dbf3ab7eb90ac335a/FLAG1f3307afd [2020-10-27 19:33:42,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94c6b9557/9d3a1890388c4c0dbf3ab7eb90ac335a [2020-10-27 19:33:42,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:33:42,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:33:42,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:33:42,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:33:42,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:33:42,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:33:42" (1/1) ... [2020-10-27 19:33:42,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2ecc65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:42, skipping insertion in model container [2020-10-27 19:33:42,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:33:42" (1/1) ... [2020-10-27 19:33:42,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:33:42,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:33:44,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:33:44,818 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:33:46,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:33:46,091 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:33:46,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:46 WrapperNode [2020-10-27 19:33:46,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:33:46,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:33:46,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:33:46,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:33:46,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:46" (1/1) ... [2020-10-27 19:33:46,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:46" (1/1) ... [2020-10-27 19:33:46,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:46" (1/1) ... [2020-10-27 19:33:46,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:46" (1/1) ... [2020-10-27 19:33:46,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:46" (1/1) ... [2020-10-27 19:33:46,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:46" (1/1) ... [2020-10-27 19:33:46,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:46" (1/1) ... [2020-10-27 19:33:46,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:33:46,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:33:46,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:33:46,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:33:46,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:46" (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 [2020-10-27 19:33:46,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:33:46,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:33:46,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:33:46,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:33:46,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:33:46,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:33:46,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 19:33:46,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 19:33:46,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 19:33:46,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:33:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:33:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:33:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:33:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 19:33:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 19:33:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 19:33:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:33:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:33:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:33:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:33:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:33:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:33:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:33:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:33:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:33:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:33:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:33:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:33:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:34:06,423 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:34:06,423 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:34:06,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:34:06 BoogieIcfgContainer [2020-10-27 19:34:06,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:34:06,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:34:06,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:34:06,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:34:06,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:33:42" (1/3) ... [2020-10-27 19:34:06,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7c99d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:34:06, skipping insertion in model container [2020-10-27 19:34:06,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:33:46" (2/3) ... [2020-10-27 19:34:06,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7c99d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:34:06, skipping insertion in model container [2020-10-27 19:34:06,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:34:06" (3/3) ... [2020-10-27 19:34:06,454 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label54.c [2020-10-27 19:34:06,471 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:34:06,481 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:34:06,500 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:34:06,570 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:34:06,571 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:34:06,571 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:34:06,571 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:34:06,571 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:34:06,571 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:34:06,571 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:34:06,572 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:34:06,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-27 19:34:06,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 19:34:06,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:34:06,663 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] [2020-10-27 19:34:06,664 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:34:06,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:34:06,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1139942070, now seen corresponding path program 1 times [2020-10-27 19:34:06,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:34:06,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583237307] [2020-10-27 19:34:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:34:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:34:07,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:34:07,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:34:07,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 19:34:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:34:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-27 19:34:07,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:34:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:34:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:34:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 19:34:07,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:34:08,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:34:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:34:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:34:08,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:34:08,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:34:08,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:34:08,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 19:34:08,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:34:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:34:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:34:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:34:08,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:34:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:34:08,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583237307] [2020-10-27 19:34:08,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:34:08,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:34:08,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479826210] [2020-10-27 19:34:08,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:34:08,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:34:08,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:34:08,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:34:08,222 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-27 19:34:56,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:34:56,622 INFO L93 Difference]: Finished difference Result 6579 states and 12488 transitions. [2020-10-27 19:34:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:34:56,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-27 19:34:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:34:56,690 INFO L225 Difference]: With dead ends: 6579 [2020-10-27 19:34:56,690 INFO L226 Difference]: Without dead ends: 4730 [2020-10-27 19:34:56,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:34:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2020-10-27 19:34:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 4642. [2020-10-27 19:34:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4642 states. [2020-10-27 19:34:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4642 states to 4642 states and 7844 transitions. [2020-10-27 19:34:57,020 INFO L78 Accepts]: Start accepts. Automaton has 4642 states and 7844 transitions. Word has length 71 [2020-10-27 19:34:57,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:34:57,021 INFO L481 AbstractCegarLoop]: Abstraction has 4642 states and 7844 transitions. [2020-10-27 19:34:57,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:34:57,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4642 states and 7844 transitions. [2020-10-27 19:34:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 19:34:57,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:34:57,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:34:57,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:34:57,032 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:34:57,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:34:57,033 INFO L82 PathProgramCache]: Analyzing trace with hash -216396743, now seen corresponding path program 1 times [2020-10-27 19:34:57,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:34:57,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936482307] [2020-10-27 19:34:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:34:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:34:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:34:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:34:58,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:34:58,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 19:34:58,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:34:58,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1603 [2020-10-27 19:34:58,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:34:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:34:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 19:34:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:34:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 19:34:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:34:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:34:59,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:34:59,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:34:59,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:34:59,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:34:59,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:34:59,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:34:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:34:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:34:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:34:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 19:34:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:34:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:34:59,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:34:59,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:34:59,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 19:34:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:34:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 19:34:59,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:34:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:34:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:34:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 19:34:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:34:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:34:59,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936482307] [2020-10-27 19:34:59,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:34:59,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:34:59,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711728358] [2020-10-27 19:34:59,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:34:59,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:34:59,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:34:59,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:34:59,454 INFO L87 Difference]: Start difference. First operand 4642 states and 7844 transitions. Second operand 5 states. [2020-10-27 19:35:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:35:42,963 INFO L93 Difference]: Finished difference Result 13530 states and 23160 transitions. [2020-10-27 19:35:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:35:42,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 19:35:42,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:35:43,016 INFO L225 Difference]: With dead ends: 13530 [2020-10-27 19:35:43,016 INFO L226 Difference]: Without dead ends: 8894 [2020-10-27 19:35:43,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:35:43,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8894 states. [2020-10-27 19:35:43,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8894 to 8888. [2020-10-27 19:35:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8888 states. [2020-10-27 19:35:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8888 states to 8888 states and 12953 transitions. [2020-10-27 19:35:43,314 INFO L78 Accepts]: Start accepts. Automaton has 8888 states and 12953 transitions. Word has length 147 [2020-10-27 19:35:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:35:43,315 INFO L481 AbstractCegarLoop]: Abstraction has 8888 states and 12953 transitions. [2020-10-27 19:35:43,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:35:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8888 states and 12953 transitions. [2020-10-27 19:35:43,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 19:35:43,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:35:43,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:35:43,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:35:43,320 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:35:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:35:43,321 INFO L82 PathProgramCache]: Analyzing trace with hash 98137275, now seen corresponding path program 1 times [2020-10-27 19:35:43,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:35:43,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504807797] [2020-10-27 19:35:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:35:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:35:43,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:35:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:35:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:35:46,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:35:46,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-27 19:35:46,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:35:46,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2607 [2020-10-27 19:35:46,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:35:46,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:35:46,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-27 19:35:46,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:35:46,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:35:46,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:35:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:35:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:35:46,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:35:46,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:35:46,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:35:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:35:46,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:35:46,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:35:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:35:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:35:46,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:35:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:35:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:35:46,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:35:46,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:35:46,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 19:35:46,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:35:46,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 19:35:46,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:35:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:35:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:35:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 19:35:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:35:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:35:46,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504807797] [2020-10-27 19:35:46,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:35:46,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:35:46,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643002035] [2020-10-27 19:35:46,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:35:46,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:35:46,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:35:46,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:35:46,442 INFO L87 Difference]: Start difference. First operand 8888 states and 12953 transitions. Second operand 5 states. [2020-10-27 19:36:27,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:36:27,600 INFO L93 Difference]: Finished difference Result 22009 states and 33547 transitions. [2020-10-27 19:36:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:36:27,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-27 19:36:27,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:36:27,668 INFO L225 Difference]: With dead ends: 22009 [2020-10-27 19:36:27,668 INFO L226 Difference]: Without dead ends: 13127 [2020-10-27 19:36:27,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:36:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13127 states. [2020-10-27 19:36:28,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13127 to 13121. [2020-10-27 19:36:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13121 states. [2020-10-27 19:36:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13121 states to 13121 states and 18023 transitions. [2020-10-27 19:36:28,097 INFO L78 Accepts]: Start accepts. Automaton has 13121 states and 18023 transitions. Word has length 173 [2020-10-27 19:36:28,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:36:28,099 INFO L481 AbstractCegarLoop]: Abstraction has 13121 states and 18023 transitions. [2020-10-27 19:36:28,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:36:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 13121 states and 18023 transitions. [2020-10-27 19:36:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 19:36:28,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:36:28,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:36:28,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:36:28,116 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:36:28,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:36:28,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1983243573, now seen corresponding path program 1 times [2020-10-27 19:36:28,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:36:28,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100036065] [2020-10-27 19:36:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:36:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:36:28,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:36:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:36:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:36:30,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:36:30,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-27 19:36:30,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:36:30,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2221 [2020-10-27 19:36:30,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:36:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:36:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-27 19:36:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 19:36:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:36:30,616 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 19:36:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:36:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:36:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:36:30,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:36:30,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:36:30,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:36:30,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:36:30,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:36:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:36:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:36:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:36:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:36:30,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:36:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:36:30,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:36:30,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:36:30,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 19:36:30,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:36:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 19:36:30,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:36:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:36:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:36:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-27 19:36:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:36:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:36:31,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100036065] [2020-10-27 19:36:31,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:36:31,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:36:31,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215280206] [2020-10-27 19:36:31,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:36:31,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:36:31,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:36:31,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:36:31,134 INFO L87 Difference]: Start difference. First operand 13121 states and 18023 transitions. Second operand 5 states. [2020-10-27 19:36:31,980 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 19:37:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:37:18,302 INFO L93 Difference]: Finished difference Result 30462 states and 43824 transitions. [2020-10-27 19:37:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:37:18,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-27 19:37:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:37:18,365 INFO L225 Difference]: With dead ends: 30462 [2020-10-27 19:37:18,365 INFO L226 Difference]: Without dead ends: 17347 [2020-10-27 19:37:18,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:37:18,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17347 states. [2020-10-27 19:37:18,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17347 to 17338. [2020-10-27 19:37:18,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17338 states. [2020-10-27 19:37:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17338 states to 17338 states and 23164 transitions. [2020-10-27 19:37:18,810 INFO L78 Accepts]: Start accepts. Automaton has 17338 states and 23164 transitions. Word has length 252 [2020-10-27 19:37:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:37:18,811 INFO L481 AbstractCegarLoop]: Abstraction has 17338 states and 23164 transitions. [2020-10-27 19:37:18,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:37:18,812 INFO L276 IsEmpty]: Start isEmpty. Operand 17338 states and 23164 transitions. [2020-10-27 19:37:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 19:37:18,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:37:18,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 19:37:18,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:37:18,821 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:37:18,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:37:18,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1605118552, now seen corresponding path program 1 times [2020-10-27 19:37:18,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:37:18,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223690073] [2020-10-27 19:37:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:37:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:37:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:37:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:37:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:37:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:37:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:37:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:37:23,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:37:23,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-27 19:37:23,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 19:37:23,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 19:37:23,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:37:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:37:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 197 [2020-10-27 19:37:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 19:37:23,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:37:24,099 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 19:37:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:37:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:37:24,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:37:24,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:37:24,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:37:24,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:37:24,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:37:24,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:37:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:37:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:37:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:37:24,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:37:24,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:37:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:37:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:37:24,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:37:24,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 19:37:24,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:37:24,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 19:37:24,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:37:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:37:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:37:24,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:37:24,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:37:24,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 19:37:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:37:24,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:37:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:37:24,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:37:24,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 19:37:24,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:37:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 19:37:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:37:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:37:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 19:37:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:37:24,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:37:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 19:37:24,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223690073] [2020-10-27 19:37:24,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:37:24,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:37:24,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181221595] [2020-10-27 19:37:24,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:37:24,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:37:24,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:37:24,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:37:24,560 INFO L87 Difference]: Start difference. First operand 17338 states and 23164 transitions. Second operand 6 states. [2020-10-27 19:37:25,756 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 19:37:27,888 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 19:37:28,222 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 68