/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:42:20,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:42:20,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:42:20,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:42:20,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:42:20,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:42:20,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:42:20,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:42:20,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:42:20,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:42:20,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:42:20,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:42:20,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:42:20,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:42:20,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:42:20,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:42:20,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:42:20,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:42:20,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:42:20,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:42:20,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:42:20,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:42:20,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:42:20,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:42:20,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:42:20,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:42:20,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:42:20,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:42:20,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:42:20,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:42:20,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:42:20,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:42:20,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:42:20,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:42:20,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:42:20,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:42:20,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:42:20,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:42:20,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:42:20,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:42:20,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:42:20,931 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 [2020-10-12 13:42:20,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:42:20,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:42:20,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:42:20,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:42:20,957 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:42:20,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:42:20,957 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:42:20,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:42:20,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:42:20,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:42:20,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:42:20,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:42:20,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:42:20,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:42:20,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:42:20,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:42:20,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:42:20,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:42:20,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:42:20,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:42:20,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:42:20,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:42:20,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:42:20,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:42:20,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:42:20,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:42:20,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:42:20,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:42:20,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:42:20,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:42:21,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:42:21,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:42:21,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:42:21,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:42:21,347 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:42:21,347 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36.c [2020-10-12 13:42:21,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f589754de/d5ef7922ff65450ca96b3881e82afbc1/FLAGba27757df [2020-10-12 13:42:22,204 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:42:22,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label36.c [2020-10-12 13:42:22,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f589754de/d5ef7922ff65450ca96b3881e82afbc1/FLAGba27757df [2020-10-12 13:42:22,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f589754de/d5ef7922ff65450ca96b3881e82afbc1 [2020-10-12 13:42:22,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:42:22,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:42:22,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:42:22,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:42:22,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:42:22,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:42:22" (1/1) ... [2020-10-12 13:42:22,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3155a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:22, skipping insertion in model container [2020-10-12 13:42:22,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:42:22" (1/1) ... [2020-10-12 13:42:22,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:42:22,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:42:24,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:42:24,246 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:42:24,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:42:24,952 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:42:24,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:24 WrapperNode [2020-10-12 13:42:24,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:42:24,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:42:24,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:42:24,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:42:24,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:24" (1/1) ... [2020-10-12 13:42:24,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:24" (1/1) ... [2020-10-12 13:42:25,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:24" (1/1) ... [2020-10-12 13:42:25,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:24" (1/1) ... [2020-10-12 13:42:25,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:24" (1/1) ... [2020-10-12 13:42:25,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:24" (1/1) ... [2020-10-12 13:42:25,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:24" (1/1) ... [2020-10-12 13:42:25,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:42:25,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:42:25,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:42:25,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:42:25,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:24" (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 [2020-10-12 13:42:25,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:42:25,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:42:25,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:42:25,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:42:25,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:42:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:42:25,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:42:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:42:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:42:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:42:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:42:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:42:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:42:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:42:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:42:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:42:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:42:38,498 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:42:38,498 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:42:38,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:42:38 BoogieIcfgContainer [2020-10-12 13:42:38,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:42:38,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:42:38,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:42:38,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:42:38,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:42:22" (1/3) ... [2020-10-12 13:42:38,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509ba3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:42:38, skipping insertion in model container [2020-10-12 13:42:38,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:42:24" (2/3) ... [2020-10-12 13:42:38,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509ba3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:42:38, skipping insertion in model container [2020-10-12 13:42:38,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:42:38" (3/3) ... [2020-10-12 13:42:38,527 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label36.c [2020-10-12 13:42:38,540 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:42:38,552 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:42:38,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:42:38,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:42:38,602 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:42:38,602 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:42:38,602 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:42:38,602 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:42:38,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:42:38,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:42:38,603 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:42:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:42:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 13:42:38,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:42:38,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:42:38,663 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:42:38,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:42:38,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1200737568, now seen corresponding path program 1 times [2020-10-12 13:42:38,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:42:38,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51848706] [2020-10-12 13:42:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:42:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:39,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:39,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 13:42:39,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-12 13:42:39,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:42:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:42:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 13:42:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:42:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:42:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:39,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:39,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:39,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:42:39,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 13:42:39,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:42:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:42:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:42:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:42:39,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51848706] [2020-10-12 13:42:39,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:42:39,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:42:39,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942390625] [2020-10-12 13:42:39,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:42:39,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:42:39,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:42:39,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:42:39,391 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-12 13:42:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:42:57,834 INFO L93 Difference]: Finished difference Result 3165 states and 5795 transitions. [2020-10-12 13:42:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:42:57,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-12 13:42:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:42:57,875 INFO L225 Difference]: With dead ends: 3165 [2020-10-12 13:42:57,875 INFO L226 Difference]: Without dead ends: 1961 [2020-10-12 13:42:57,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:42:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2020-10-12 13:42:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1943. [2020-10-12 13:42:58,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1943 states. [2020-10-12 13:42:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3346 transitions. [2020-10-12 13:42:58,082 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3346 transitions. Word has length 17 [2020-10-12 13:42:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:42:58,083 INFO L479 AbstractCegarLoop]: Abstraction has 1943 states and 3346 transitions. [2020-10-12 13:42:58,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:42:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3346 transitions. [2020-10-12 13:42:58,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 13:42:58,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:42:58,089 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:42:58,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:42:58,089 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:42:58,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:42:58,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2045464903, now seen corresponding path program 1 times [2020-10-12 13:42:58,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:42:58,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284710964] [2020-10-12 13:42:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:42:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:58,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:59,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:59,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 13:42:59,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:42:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1422 [2020-10-12 13:42:59,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:42:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:42:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:42:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:42:59,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:42:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:59,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:59,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:42:59,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 13:42:59,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:42:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:42:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:42:59,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 13:42:59,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:42:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:59,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:42:59,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 13:42:59,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:42:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:42:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:42:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 13:43:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:43:00,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284710964] [2020-10-12 13:43:00,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:43:00,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:43:00,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100925310] [2020-10-12 13:43:00,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:43:00,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:43:00,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:43:00,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:43:00,030 INFO L87 Difference]: Start difference. First operand 1943 states and 3346 transitions. Second operand 7 states. [2020-10-12 13:43:24,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:43:24,756 INFO L93 Difference]: Finished difference Result 5814 states and 10079 transitions. [2020-10-12 13:43:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:43:24,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-12 13:43:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:43:24,784 INFO L225 Difference]: With dead ends: 5814 [2020-10-12 13:43:24,785 INFO L226 Difference]: Without dead ends: 3877 [2020-10-12 13:43:24,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:43:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3877 states. [2020-10-12 13:43:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3877 to 3804. [2020-10-12 13:43:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3804 states. [2020-10-12 13:43:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 6016 transitions. [2020-10-12 13:43:24,936 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 6016 transitions. Word has length 86 [2020-10-12 13:43:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:43:24,937 INFO L479 AbstractCegarLoop]: Abstraction has 3804 states and 6016 transitions. [2020-10-12 13:43:24,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:43:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 6016 transitions. [2020-10-12 13:43:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 13:43:24,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:43:24,947 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:43:24,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:43:24,948 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:43:24,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:43:24,948 INFO L82 PathProgramCache]: Analyzing trace with hash -960344675, now seen corresponding path program 1 times [2020-10-12 13:43:24,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:43:24,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978210847] [2020-10-12 13:43:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:43:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:25,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:25,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:25,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:25,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 13:43:25,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:43:25,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-12 13:43:25,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:43:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:43:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 13:43:25,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:43:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:25,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:25,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:25,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:43:25,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:25,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:43:25,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:43:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:43:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:43:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:43:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:43:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:26,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:26,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 13:43:26,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:26,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 13:43:26,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:26,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:43:26,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:43:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 13:43:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:43:26,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978210847] [2020-10-12 13:43:26,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:43:26,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:43:26,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591789911] [2020-10-12 13:43:26,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:43:26,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:43:26,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:43:26,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:43:26,146 INFO L87 Difference]: Start difference. First operand 3804 states and 6016 transitions. Second operand 7 states. [2020-10-12 13:43:54,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:43:54,853 INFO L93 Difference]: Finished difference Result 11257 states and 18092 transitions. [2020-10-12 13:43:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:43:54,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-12 13:43:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:43:54,896 INFO L225 Difference]: With dead ends: 11257 [2020-10-12 13:43:54,896 INFO L226 Difference]: Without dead ends: 7459 [2020-10-12 13:43:54,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:43:54,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7459 states. [2020-10-12 13:43:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7459 to 7300. [2020-10-12 13:43:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7300 states. [2020-10-12 13:43:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7300 states to 7300 states and 10552 transitions. [2020-10-12 13:43:55,141 INFO L78 Accepts]: Start accepts. Automaton has 7300 states and 10552 transitions. Word has length 88 [2020-10-12 13:43:55,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:43:55,142 INFO L479 AbstractCegarLoop]: Abstraction has 7300 states and 10552 transitions. [2020-10-12 13:43:55,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:43:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 7300 states and 10552 transitions. [2020-10-12 13:43:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 13:43:55,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:43:55,144 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:43:55,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:43:55,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:43:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:43:55,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1003326610, now seen corresponding path program 1 times [2020-10-12 13:43:55,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:43:55,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661452699] [2020-10-12 13:43:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:43:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:55,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:56,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:56,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:43:56,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:43:56,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-12 13:43:56,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:43:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:43:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 13:43:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:56,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:43:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:56,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:56,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:56,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:43:56,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:56,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:43:56,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:43:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:43:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:43:56,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:43:56,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:43:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:56,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:56,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 13:43:56,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 13:43:56,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:43:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:43:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 13:43:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:43:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:43:56,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661452699] [2020-10-12 13:43:56,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:43:56,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:43:56,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626192088] [2020-10-12 13:43:56,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:43:56,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:43:56,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:43:56,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:43:56,671 INFO L87 Difference]: Start difference. First operand 7300 states and 10552 transitions. Second operand 7 states. [2020-10-12 13:44:19,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:44:19,691 INFO L93 Difference]: Finished difference Result 22115 states and 33059 transitions. [2020-10-12 13:44:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:44:19,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-12 13:44:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:44:19,785 INFO L225 Difference]: With dead ends: 22115 [2020-10-12 13:44:19,785 INFO L226 Difference]: Without dead ends: 14821 [2020-10-12 13:44:19,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:44:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14821 states. [2020-10-12 13:44:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14821 to 14472. [2020-10-12 13:44:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14472 states. [2020-10-12 13:44:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14472 states to 14472 states and 19433 transitions. [2020-10-12 13:44:20,223 INFO L78 Accepts]: Start accepts. Automaton has 14472 states and 19433 transitions. Word has length 99 [2020-10-12 13:44:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:44:20,224 INFO L479 AbstractCegarLoop]: Abstraction has 14472 states and 19433 transitions. [2020-10-12 13:44:20,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:44:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 14472 states and 19433 transitions. [2020-10-12 13:44:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-12 13:44:20,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:44:20,234 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:44:20,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:44:20,234 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:44:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:44:20,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1385522989, now seen corresponding path program 1 times [2020-10-12 13:44:20,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:44:20,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746840699] [2020-10-12 13:44:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:44:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:20,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:20,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:20,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:22,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:22,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-12 13:44:22,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:44:22,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-12 13:44:22,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:44:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:44:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:44:22,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:44:22,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:44:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:22,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:22,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:44:22,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:44:22,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:44:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:44:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:44:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:44:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:44:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:22,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:22,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:22,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 13:44:22,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:44:22,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-12 13:44:22,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:22,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:44:22,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:44:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:44:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:44:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:44:22,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746840699] [2020-10-12 13:44:22,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:44:22,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:44:22,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064155359] [2020-10-12 13:44:22,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:44:22,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:44:22,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:44:22,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:44:22,715 INFO L87 Difference]: Start difference. First operand 14472 states and 19433 transitions. Second operand 7 states. [2020-10-12 13:44:43,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:44:43,768 INFO L93 Difference]: Finished difference Result 26167 states and 35968 transitions. [2020-10-12 13:44:43,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:44:43,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-12 13:44:43,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:44:43,845 INFO L225 Difference]: With dead ends: 26167 [2020-10-12 13:44:43,845 INFO L226 Difference]: Without dead ends: 14993 [2020-10-12 13:44:43,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:44:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14993 states. [2020-10-12 13:44:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14993 to 14704. [2020-10-12 13:44:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14704 states. [2020-10-12 13:44:44,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14704 states to 14704 states and 19835 transitions. [2020-10-12 13:44:44,325 INFO L78 Accepts]: Start accepts. Automaton has 14704 states and 19835 transitions. Word has length 137 [2020-10-12 13:44:44,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:44:44,328 INFO L479 AbstractCegarLoop]: Abstraction has 14704 states and 19835 transitions. [2020-10-12 13:44:44,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:44:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 14704 states and 19835 transitions. [2020-10-12 13:44:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 13:44:44,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:44:44,336 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:44:44,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:44:44,336 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:44:44,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:44:44,338 INFO L82 PathProgramCache]: Analyzing trace with hash 836995319, now seen corresponding path program 1 times [2020-10-12 13:44:44,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:44:44,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712293465] [2020-10-12 13:44:44,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:44:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:44,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:45,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:48,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:48,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-12 13:44:48,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:44:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4152 [2020-10-12 13:44:48,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:44:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:44:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-12 13:44:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:44:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:44:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:48,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:48,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:48,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:44:48,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:48,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:44:48,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:44:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:44:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:44:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:44:48,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:44:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:48,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:48,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:48,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:44:48,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:44:48,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-12 13:44:48,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:48,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:44:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:44:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:44:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:44:49,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 13:44:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:49,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:49,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:49,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 13:44:49,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 13:44:49,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:44:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:44:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 13:44:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:44:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 21 proven. 77 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:44:49,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712293465] [2020-10-12 13:44:49,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:44:49,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:44:49,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195484716] [2020-10-12 13:44:49,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:44:49,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:44:49,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:44:49,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:44:49,622 INFO L87 Difference]: Start difference. First operand 14704 states and 19835 transitions. Second operand 8 states. [2020-10-12 13:45:13,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:45:13,901 INFO L93 Difference]: Finished difference Result 41271 states and 60128 transitions. [2020-10-12 13:45:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:45:13,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2020-10-12 13:45:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:45:14,034 INFO L225 Difference]: With dead ends: 41271 [2020-10-12 13:45:14,034 INFO L226 Difference]: Without dead ends: 27376 [2020-10-12 13:45:14,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:45:14,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27376 states. [2020-10-12 13:45:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27376 to 27055. [2020-10-12 13:45:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27055 states. [2020-10-12 13:45:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27055 states to 27055 states and 35577 transitions. [2020-10-12 13:45:15,029 INFO L78 Accepts]: Start accepts. Automaton has 27055 states and 35577 transitions. Word has length 192 [2020-10-12 13:45:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:45:15,030 INFO L479 AbstractCegarLoop]: Abstraction has 27055 states and 35577 transitions. [2020-10-12 13:45:15,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:45:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 27055 states and 35577 transitions. [2020-10-12 13:45:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-12 13:45:15,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:45:15,037 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:45:15,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:45:15,038 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:45:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:45:15,038 INFO L82 PathProgramCache]: Analyzing trace with hash 293693777, now seen corresponding path program 1 times [2020-10-12 13:45:15,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:45:15,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132889572] [2020-10-12 13:45:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:45:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:15,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:15,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:16,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:19,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:19,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-12 13:45:19,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:45:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4124 [2020-10-12 13:45:19,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 13:45:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:45:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-12 13:45:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:45:19,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:45:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:19,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:19,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:45:19,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:19,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:45:19,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:45:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:45:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:45:19,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:19,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:45:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:19,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:19,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:19,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:45:19,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:45:19,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-12 13:45:19,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:19,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:45:19,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:45:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 13:45:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:45:20,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:45:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:20,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:20,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:20,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:45:20,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:45:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-12 13:45:20,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:45:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:45:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:45:20,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:45:20,945 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-10-12 13:45:21,103 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-12 13:45:21,270 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-10-12 13:45:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 12 proven. 97 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:45:21,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132889572] [2020-10-12 13:45:21,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:45:21,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 13:45:21,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983279507] [2020-10-12 13:45:21,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 13:45:21,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:45:21,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 13:45:21,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:45:21,665 INFO L87 Difference]: Start difference. First operand 27055 states and 35577 transitions. Second operand 12 states. [2020-10-12 13:45:21,973 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-12 13:45:22,573 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 24 [2020-10-12 13:45:22,831 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-12 13:45:25,327 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-10-12 13:45:27,045 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-10-12 13:45:27,283 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-10-12 13:45:27,679 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-12 13:45:28,929 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-12 13:45:29,583 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-12 13:45:30,341 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-12 13:45:30,694 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-12 13:45:31,100 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-12 13:45:31,362 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-10-12 13:45:31,751 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 13:45:33,014 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-12 13:45:37,936 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-12 13:46:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:46:11,679 INFO L93 Difference]: Finished difference Result 37711 states and 56179 transitions. [2020-10-12 13:46:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 13:46:11,685 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 239 [2020-10-12 13:46:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:46:11,831 INFO L225 Difference]: With dead ends: 37711 [2020-10-12 13:46:11,831 INFO L226 Difference]: Without dead ends: 37709 [2020-10-12 13:46:11,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=314, Invalid=876, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 13:46:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37709 states. [2020-10-12 13:46:12,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37709 to 33667. [2020-10-12 13:46:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33667 states. [2020-10-12 13:46:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33667 states to 33667 states and 46559 transitions. [2020-10-12 13:46:12,980 INFO L78 Accepts]: Start accepts. Automaton has 33667 states and 46559 transitions. Word has length 239 [2020-10-12 13:46:12,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:46:12,981 INFO L479 AbstractCegarLoop]: Abstraction has 33667 states and 46559 transitions. [2020-10-12 13:46:12,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 13:46:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 33667 states and 46559 transitions. [2020-10-12 13:46:12,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-12 13:46:12,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:46:12,994 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-12 13:46:12,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:46:12,995 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:46:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:46:12,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1394678104, now seen corresponding path program 1 times [2020-10-12 13:46:12,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:46:13,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854791768] [2020-10-12 13:46:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:46:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:13,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking...