/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/array-programs/partial_mod_count_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:25:17,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:25:17,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:25:17,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:25:17,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:25:17,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:25:17,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:25:17,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:25:17,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:25:17,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:25:17,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:25:17,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:25:17,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:25:17,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:25:17,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:25:17,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:25:17,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:25:17,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:25:17,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:25:17,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:25:17,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:25:17,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:25:17,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:25:17,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:25:17,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:25:17,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:25:17,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:25:17,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:25:17,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:25:17,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:25:17,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:25:17,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:25:17,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:25:17,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:25:17,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:25:17,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:25:17,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:25:17,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:25:17,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:25:17,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:25:17,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:25:17,897 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 [2020-10-14 18:25:17,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:25:17,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:25:17,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:25:17,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:25:17,923 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:25:17,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:25:17,924 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:25:17,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:25:17,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:25:17,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:25:17,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:25:17,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:25:17,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:25:17,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:25:17,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:25:17,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:25:17,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:25:17,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:25:17,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:25:17,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:25:17,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:25:17,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:25:17,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:25:17,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:25:17,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:25:17,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:25:17,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:25:17,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:25:17,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:25:17,928 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:25:18,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:25:18,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:25:18,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:25:18,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:25:18,303 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:25:18,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_5.c [2020-10-14 18:25:18,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e261cae5b/907d99a55c58438aad529ffd346a831c/FLAGd2490279d [2020-10-14 18:25:18,830 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:25:18,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/partial_mod_count_5.c [2020-10-14 18:25:18,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e261cae5b/907d99a55c58438aad529ffd346a831c/FLAGd2490279d [2020-10-14 18:25:19,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e261cae5b/907d99a55c58438aad529ffd346a831c [2020-10-14 18:25:19,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:25:19,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:25:19,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:25:19,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:25:19,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:25:19,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:25:19" (1/1) ... [2020-10-14 18:25:19,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c39f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19, skipping insertion in model container [2020-10-14 18:25:19,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:25:19" (1/1) ... [2020-10-14 18:25:19,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:25:19,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:25:19,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:25:19,413 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:25:19,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:25:19,462 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:25:19,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19 WrapperNode [2020-10-14 18:25:19,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:25:19,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:25:19,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:25:19,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:25:19,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19" (1/1) ... [2020-10-14 18:25:19,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19" (1/1) ... [2020-10-14 18:25:19,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19" (1/1) ... [2020-10-14 18:25:19,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19" (1/1) ... [2020-10-14 18:25:19,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19" (1/1) ... [2020-10-14 18:25:19,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19" (1/1) ... [2020-10-14 18:25:19,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19" (1/1) ... [2020-10-14 18:25:19,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:25:19,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:25:19,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:25:19,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:25:19,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19" (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 [2020-10-14 18:25:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:25:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:25:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:25:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:25:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:25:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:25:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:25:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:25:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:25:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:25:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:25:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:25:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:25:19,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:25:19,906 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:25:19,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:25:19 BoogieIcfgContainer [2020-10-14 18:25:19,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:25:19,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:25:19,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:25:19,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:25:19,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:25:19" (1/3) ... [2020-10-14 18:25:19,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e72e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:25:19, skipping insertion in model container [2020-10-14 18:25:19,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:19" (2/3) ... [2020-10-14 18:25:19,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e72e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:25:19, skipping insertion in model container [2020-10-14 18:25:19,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:25:19" (3/3) ... [2020-10-14 18:25:19,920 INFO L109 eAbstractionObserver]: Analyzing ICFG partial_mod_count_5.c [2020-10-14 18:25:19,935 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:25:19,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:25:19,968 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:25:20,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:25:20,004 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:25:20,004 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:25:20,004 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:25:20,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:25:20,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:25:20,005 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:25:20,005 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:25:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-14 18:25:20,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 18:25:20,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:20,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:20,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:20,044 INFO L82 PathProgramCache]: Analyzing trace with hash 547567586, now seen corresponding path program 1 times [2020-10-14 18:25:20,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:20,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399747648] [2020-10-14 18:25:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:20,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:20,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:20,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 18:25:20,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:25:20,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-14 18:25:20,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:20,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:25:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 18:25:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:25:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:25:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:20,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:20,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:20,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:20,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 18:25:20,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:20,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:25:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:25:20,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399747648] [2020-10-14 18:25:20,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:25:20,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 18:25:20,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802276288] [2020-10-14 18:25:20,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:25:20,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:20,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:25:20,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:25:20,984 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 8 states. [2020-10-14 18:25:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:21,325 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2020-10-14 18:25:21,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:25:21,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-14 18:25:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:21,337 INFO L225 Difference]: With dead ends: 59 [2020-10-14 18:25:21,338 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 18:25:21,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:25:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 18:25:21,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-14 18:25:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 18:25:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-14 18:25:21,395 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 14 [2020-10-14 18:25:21,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:21,396 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-14 18:25:21,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:25:21,396 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-14 18:25:21,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 18:25:21,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:21,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:21,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:25:21,399 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:21,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:21,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1588214163, now seen corresponding path program 1 times [2020-10-14 18:25:21,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:21,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714853796] [2020-10-14 18:25:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:21,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:21,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:22,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:22,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 18:25:22,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:25:22,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-14 18:25:22,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:22,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:25:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 18:25:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 18:25:22,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:25:22,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:22,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:22,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:22,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:25:22,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:22,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:25:22,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:22,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 18:25:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:22,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:22,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:22,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:22,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:25:22,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:22,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:22,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:25:22,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714853796] [2020-10-14 18:25:22,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:22,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:25:22,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548894196] [2020-10-14 18:25:22,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:25:22,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:22,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:25:22,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:25:22,651 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 9 states. [2020-10-14 18:25:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:22,941 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-10-14 18:25:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:25:22,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-14 18:25:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:22,944 INFO L225 Difference]: With dead ends: 42 [2020-10-14 18:25:22,944 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 18:25:22,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:25:22,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 18:25:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-14 18:25:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 18:25:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-14 18:25:22,957 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 22 [2020-10-14 18:25:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:22,959 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-14 18:25:22,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:25:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-14 18:25:22,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 18:25:22,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:22,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:22,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:25:22,962 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:22,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2013733517, now seen corresponding path program 2 times [2020-10-14 18:25:22,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:22,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156720555] [2020-10-14 18:25:22,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:24,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:25,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:25,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 18:25:25,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:25:25,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2774 [2020-10-14 18:25:25,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:25,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:25:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 18:25:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 18:25:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:25,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:25,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:25,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:25,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:25:25,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:25,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:25:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 18:25:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:25,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:25,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:25,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:25,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:25,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:25:25,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:25,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:25,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:25,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 18:25:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:25,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:25,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:25,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:25:25,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:25,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:25:25,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156720555] [2020-10-14 18:25:25,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:25,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:25:25,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973000862] [2020-10-14 18:25:25,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:25:25,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:25,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:25:25,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:25:25,885 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 10 states. [2020-10-14 18:25:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:26,219 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-14 18:25:26,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:25:26,220 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-14 18:25:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:26,222 INFO L225 Difference]: With dead ends: 50 [2020-10-14 18:25:26,222 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 18:25:26,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:25:26,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 18:25:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-14 18:25:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 18:25:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-14 18:25:26,234 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 30 [2020-10-14 18:25:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:26,235 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-14 18:25:26,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:25:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-14 18:25:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 18:25:26,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:26,236 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:26,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:25:26,237 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:26,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:26,238 INFO L82 PathProgramCache]: Analyzing trace with hash 774528685, now seen corresponding path program 3 times [2020-10-14 18:25:26,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:26,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471774065] [2020-10-14 18:25:26,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:26,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:26,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:26,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:29,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:31,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 18:25:31,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:25:31,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:25:31,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:31,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:31,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:25:31,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:31,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 18:25:31,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:31,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:31,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:31,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:31,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:31,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:31,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:31,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:31,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:31,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 18:25:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:31,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:31,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:31,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:31,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:25:31,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:31,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:31,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:31,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 18:25:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:31,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:31,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:31,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:31,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:25:31,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:31,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:31,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:25:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:31,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:31,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:31,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:25:31,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:31,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:31,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:31,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:31,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:31,401 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 18:25:31,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471774065] [2020-10-14 18:25:31,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:31,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:25:31,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883838107] [2020-10-14 18:25:31,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:25:31,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:31,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:25:31,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:25:31,407 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 9 states. [2020-10-14 18:25:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:31,584 INFO L93 Difference]: Finished difference Result 104 states and 126 transitions. [2020-10-14 18:25:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:25:31,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-14 18:25:31,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:31,588 INFO L225 Difference]: With dead ends: 104 [2020-10-14 18:25:31,588 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 18:25:31,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:25:31,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 18:25:31,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-10-14 18:25:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 18:25:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-14 18:25:31,608 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 38 [2020-10-14 18:25:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:31,608 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-14 18:25:31,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:25:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-14 18:25:31,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 18:25:31,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:31,614 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:31,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:25:31,616 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:31,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:31,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1124481880, now seen corresponding path program 1 times [2020-10-14 18:25:31,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:31,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245174667] [2020-10-14 18:25:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:32,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:33,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:33,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:36,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:36,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 18:25:36,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 18:25:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 18:25:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:36,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:25:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:25:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:25:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:36,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:36,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:36,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:36,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:36,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:36,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:36,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:36,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:36,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:36,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 18:25:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:36,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:36,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:36,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:36,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:36,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:36,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:36,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:36,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:25:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:36,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:36,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:36,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:36,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:36,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:36,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:36,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:36,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:36,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:36,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:36,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:36,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 18:25:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:36,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:36,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:36,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:36,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:36,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:36,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:36,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 18:25:36,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245174667] [2020-10-14 18:25:36,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:25:36,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 18:25:36,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505806760] [2020-10-14 18:25:36,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:25:36,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:36,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:25:36,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:25:36,796 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 10 states. [2020-10-14 18:25:37,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:37,087 INFO L93 Difference]: Finished difference Result 136 states and 166 transitions. [2020-10-14 18:25:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:25:37,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-14 18:25:37,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:37,090 INFO L225 Difference]: With dead ends: 136 [2020-10-14 18:25:37,091 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 18:25:37,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:25:37,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 18:25:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-10-14 18:25:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 18:25:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-14 18:25:37,111 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 41 [2020-10-14 18:25:37,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:37,111 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-14 18:25:37,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:25:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-14 18:25:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 18:25:37,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:37,116 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:37,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:25:37,116 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:37,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:37,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1004982415, now seen corresponding path program 1 times [2020-10-14 18:25:37,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:37,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128726441] [2020-10-14 18:25:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:37,128 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-14 18:25:37,130 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-14 18:25:37,130 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:25:37,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:25:37,163 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-14 18:25:37,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:25:37 BoogieIcfgContainer [2020-10-14 18:25:37,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:25:37,168 INFO L168 Benchmark]: Toolchain (without parser) took 17990.99 ms. Allocated memory was 146.8 MB in the beginning and 455.1 MB in the end (delta: 308.3 MB). Free memory was 103.2 MB in the beginning and 211.1 MB in the end (delta: -107.9 MB). Peak memory consumption was 200.4 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:37,170 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 18:25:37,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.04 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 93.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:37,180 INFO L168 Benchmark]: Boogie Preprocessor took 126.09 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.1 MB in the beginning and 180.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:37,181 INFO L168 Benchmark]: RCFGBuilder took 320.58 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 164.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:37,182 INFO L168 Benchmark]: TraceAbstraction took 17251.58 ms. Allocated memory was 202.9 MB in the beginning and 455.1 MB in the end (delta: 252.2 MB). Free memory was 164.9 MB in the beginning and 211.1 MB in the end (delta: -46.2 MB). Peak memory consumption was 205.9 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:37,195 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.04 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 93.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.09 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.1 MB in the beginning and 180.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 320.58 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 164.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17251.58 ms. Allocated memory was 202.9 MB in the beginning and 455.1 MB in the end (delta: 252.2 MB). Free memory was 164.9 MB in the beginning and 211.1 MB in the end (delta: -46.2 MB). Peak memory consumption was 205.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L4] int N = 1000000; [L6] int i,j=0,a[N]; [L7] unsigned int R=5; [L8] i=0 [L8] COND TRUE iN/2) [L8] i++ [L8] COND TRUE iN/2 [L11] a[i]=i%R [L8] i++ [L8] COND FALSE !(i