/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/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:12:35,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:12:35,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:12:35,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:12:35,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:12:35,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:12:35,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:12:35,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:12:35,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:12:35,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:12:35,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:12:35,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:12:35,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:12:35,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:12:35,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:12:35,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:12:35,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:12:35,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:12:35,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:12:35,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:12:35,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:12:35,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:12:35,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:12:35,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:12:35,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:12:35,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:12:35,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:12:35,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:12:35,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:12:35,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:12:35,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:12:35,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:12:35,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:12:35,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:12:35,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:12:35,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:12:35,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:12:35,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:12:35,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:12:35,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:12:35,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:12:35,899 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 18:12:35,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:12:35,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:12:35,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:12:35,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:12:35,922 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:12:35,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:12:35,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:12:35,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:12:35,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:12:35,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:12:35,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:12:35,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:12:35,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:12:35,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:12:35,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:12:35,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:12:35,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:12:35,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:12:35,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:12:35,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:12:35,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:12:35,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:12:35,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:12:35,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:12:35,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:12:35,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:12:35,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:12:35,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:12:35,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:12:35,927 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 18:12:36,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:12:36,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:12:36,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:12:36,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:12:36,246 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:12:36,247 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-10-12 18:12:36,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/431bb8a04/70352287b0f048b5ae8087554da68b18/FLAG46a91c89a [2020-10-12 18:12:36,781 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:12:36,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-10-12 18:12:36,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/431bb8a04/70352287b0f048b5ae8087554da68b18/FLAG46a91c89a [2020-10-12 18:12:37,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/431bb8a04/70352287b0f048b5ae8087554da68b18 [2020-10-12 18:12:37,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:12:37,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:12:37,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:12:37,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:12:37,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:12:37,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:12:37" (1/1) ... [2020-10-12 18:12:37,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774a9bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37, skipping insertion in model container [2020-10-12 18:12:37,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:12:37" (1/1) ... [2020-10-12 18:12:37,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:12:37,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:12:37,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:12:37,400 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:12:37,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:12:37,475 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:12:37,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37 WrapperNode [2020-10-12 18:12:37,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:12:37,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:12:37,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:12:37,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:12:37,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37" (1/1) ... [2020-10-12 18:12:37,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37" (1/1) ... [2020-10-12 18:12:37,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37" (1/1) ... [2020-10-12 18:12:37,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37" (1/1) ... [2020-10-12 18:12:37,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37" (1/1) ... [2020-10-12 18:12:37,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37" (1/1) ... [2020-10-12 18:12:37,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37" (1/1) ... [2020-10-12 18:12:37,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:12:37,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:12:37,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:12:37,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:12:37,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37" (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 18:12:37,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:12:37,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:12:37,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:12:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:12:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:12:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:12:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:12:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:12:38,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:12:38,075 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-12 18:12:38,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:12:38 BoogieIcfgContainer [2020-10-12 18:12:38,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:12:38,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:12:38,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:12:38,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:12:38,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:12:37" (1/3) ... [2020-10-12 18:12:38,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102cde98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:12:38, skipping insertion in model container [2020-10-12 18:12:38,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:37" (2/3) ... [2020-10-12 18:12:38,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102cde98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:12:38, skipping insertion in model container [2020-10-12 18:12:38,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:12:38" (3/3) ... [2020-10-12 18:12:38,092 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-10-12 18:12:38,103 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:12:38,110 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:12:38,124 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:12:38,150 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:12:38,150 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:12:38,150 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:12:38,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:12:38,151 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:12:38,151 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:12:38,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:12:38,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:12:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-10-12 18:12:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 18:12:38,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:38,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:38,180 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:38,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:38,185 INFO L82 PathProgramCache]: Analyzing trace with hash -105811556, now seen corresponding path program 1 times [2020-10-12 18:12:38,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:38,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663577439] [2020-10-12 18:12:38,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:38,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:38,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:38,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:12:38,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 18:12:38,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 18:12:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:38,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 18:12:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:38,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:38,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:38,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:38,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:12:38,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:38,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:38,468 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 18:12:38,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663577439] [2020-10-12 18:12:38,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:38,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 18:12:38,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937364568] [2020-10-12 18:12:38,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 18:12:38,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:38,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 18:12:38,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 18:12:38,507 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 3 states. [2020-10-12 18:12:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:38,573 INFO L93 Difference]: Finished difference Result 160 states and 298 transitions. [2020-10-12 18:12:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 18:12:38,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-12 18:12:38,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:38,588 INFO L225 Difference]: With dead ends: 160 [2020-10-12 18:12:38,588 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 18:12:38,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 18:12:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 18:12:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-12 18:12:38,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-12 18:12:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 113 transitions. [2020-10-12 18:12:38,638 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 113 transitions. Word has length 13 [2020-10-12 18:12:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:38,639 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 113 transitions. [2020-10-12 18:12:38,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 18:12:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2020-10-12 18:12:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 18:12:38,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:38,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:38,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:12:38,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:38,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1547300989, now seen corresponding path program 1 times [2020-10-12 18:12:38,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:38,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547227858] [2020-10-12 18:12:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:38,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:38,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:38,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:12:38,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:12:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 18:12:38,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:12:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:12:38,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:38,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:38,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:38,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:38,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:38,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:38,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:12:38,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:38,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:38,855 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 18:12:38,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547227858] [2020-10-12 18:12:38,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:38,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:12:38,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923239883] [2020-10-12 18:12:38,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:12:38,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:38,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:12:38,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:12:38,861 INFO L87 Difference]: Start difference. First operand 78 states and 113 transitions. Second operand 4 states. [2020-10-12 18:12:39,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:39,209 INFO L93 Difference]: Finished difference Result 157 states and 232 transitions. [2020-10-12 18:12:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:12:39,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-12 18:12:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:39,214 INFO L225 Difference]: With dead ends: 157 [2020-10-12 18:12:39,214 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 18:12:39,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:12:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 18:12:39,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-12 18:12:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 18:12:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-10-12 18:12:39,245 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 14 [2020-10-12 18:12:39,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:39,246 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-10-12 18:12:39,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:12:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-10-12 18:12:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 18:12:39,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:39,248 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:39,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:12:39,249 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:39,249 INFO L82 PathProgramCache]: Analyzing trace with hash 555004895, now seen corresponding path program 1 times [2020-10-12 18:12:39,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:39,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615434378] [2020-10-12 18:12:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:39,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:39,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:39,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:12:39,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:12:39,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 18:12:39,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 18:12:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:12:39,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:39,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:39,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:39,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:39,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:39,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:12:39,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:39,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615434378] [2020-10-12 18:12:39,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:39,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:12:39,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867911383] [2020-10-12 18:12:39,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:12:39,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:39,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:12:39,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:12:39,366 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 4 states. [2020-10-12 18:12:39,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:39,452 INFO L93 Difference]: Finished difference Result 155 states and 224 transitions. [2020-10-12 18:12:39,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:12:39,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-12 18:12:39,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:39,454 INFO L225 Difference]: With dead ends: 155 [2020-10-12 18:12:39,454 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 18:12:39,455 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 18:12:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 18:12:39,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-12 18:12:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 18:12:39,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2020-10-12 18:12:39,464 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 19 [2020-10-12 18:12:39,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:39,465 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2020-10-12 18:12:39,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:12:39,465 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2020-10-12 18:12:39,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 18:12:39,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:39,466 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:39,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:12:39,467 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:39,467 INFO L82 PathProgramCache]: Analyzing trace with hash -624681896, now seen corresponding path program 1 times [2020-10-12 18:12:39,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:39,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530634532] [2020-10-12 18:12:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:39,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:39,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:12:39,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:39,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 18:12:39,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 18:12:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:12:39,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:39,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:39,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:39,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:39,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:12:39,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:39,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530634532] [2020-10-12 18:12:39,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:39,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:12:39,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910364166] [2020-10-12 18:12:39,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:12:39,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:39,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:12:39,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:12:39,593 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand 4 states. [2020-10-12 18:12:39,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:39,837 INFO L93 Difference]: Finished difference Result 196 states and 285 transitions. [2020-10-12 18:12:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:12:39,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-12 18:12:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:39,839 INFO L225 Difference]: With dead ends: 196 [2020-10-12 18:12:39,839 INFO L226 Difference]: Without dead ends: 126 [2020-10-12 18:12:39,841 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 18:12:39,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-12 18:12:39,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2020-10-12 18:12:39,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-12 18:12:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 158 transitions. [2020-10-12 18:12:39,860 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 158 transitions. Word has length 22 [2020-10-12 18:12:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:39,860 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 158 transitions. [2020-10-12 18:12:39,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:12:39,861 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 158 transitions. [2020-10-12 18:12:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 18:12:39,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:39,864 INFO L422 BasicCegarLoop]: trace histogram [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 18:12:39,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:12:39,865 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1531598883, now seen corresponding path program 1 times [2020-10-12 18:12:39,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:39,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781116128] [2020-10-12 18:12:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:39,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:39,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:39,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 18:12:39,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:12:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 18:12:39,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 18:12:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:12:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:39,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:39,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:12:39,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:40,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781116128] [2020-10-12 18:12:40,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:40,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:12:40,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075313453] [2020-10-12 18:12:40,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:12:40,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:40,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:12:40,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:12:40,006 INFO L87 Difference]: Start difference. First operand 112 states and 158 transitions. Second operand 4 states. [2020-10-12 18:12:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:40,179 INFO L93 Difference]: Finished difference Result 193 states and 275 transitions. [2020-10-12 18:12:40,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:12:40,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-12 18:12:40,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:40,181 INFO L225 Difference]: With dead ends: 193 [2020-10-12 18:12:40,181 INFO L226 Difference]: Without dead ends: 97 [2020-10-12 18:12:40,182 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 18:12:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-12 18:12:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-10-12 18:12:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 18:12:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 130 transitions. [2020-10-12 18:12:40,191 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 130 transitions. Word has length 23 [2020-10-12 18:12:40,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:40,192 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 130 transitions. [2020-10-12 18:12:40,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:12:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 130 transitions. [2020-10-12 18:12:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 18:12:40,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:40,193 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:40,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:12:40,194 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:40,194 INFO L82 PathProgramCache]: Analyzing trace with hash -576284788, now seen corresponding path program 1 times [2020-10-12 18:12:40,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:40,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396934022] [2020-10-12 18:12:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:40,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:40,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:40,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 18:12:40,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:40,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 18:12:40,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 18:12:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:12:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:40,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:40,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:40,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:40,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:40,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:12:40,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:40,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:40,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:12:40,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396934022] [2020-10-12 18:12:40,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:40,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:12:40,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009536154] [2020-10-12 18:12:40,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:12:40,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:40,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:12:40,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:12:40,263 INFO L87 Difference]: Start difference. First operand 95 states and 130 transitions. Second operand 4 states. [2020-10-12 18:12:40,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:40,350 INFO L93 Difference]: Finished difference Result 144 states and 203 transitions. [2020-10-12 18:12:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:12:40,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-12 18:12:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:40,352 INFO L225 Difference]: With dead ends: 144 [2020-10-12 18:12:40,352 INFO L226 Difference]: Without dead ends: 77 [2020-10-12 18:12:40,353 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 18:12:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-12 18:12:40,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-12 18:12:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 18:12:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2020-10-12 18:12:40,360 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 29 [2020-10-12 18:12:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:40,361 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2020-10-12 18:12:40,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:12:40,361 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2020-10-12 18:12:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 18:12:40,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:40,362 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:40,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:12:40,363 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash -31288535, now seen corresponding path program 1 times [2020-10-12 18:12:40,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:40,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777043537] [2020-10-12 18:12:40,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:40,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:40,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:40,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:12:40,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 18:12:40,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 18:12:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:12:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:40,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:40,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:40,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:40,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:12:40,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:12:40,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777043537] [2020-10-12 18:12:40,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:40,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:12:40,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027805402] [2020-10-12 18:12:40,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:12:40,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:40,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:12:40,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:12:40,443 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand 4 states. [2020-10-12 18:12:40,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:40,634 INFO L93 Difference]: Finished difference Result 165 states and 237 transitions. [2020-10-12 18:12:40,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:12:40,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-12 18:12:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:40,636 INFO L225 Difference]: With dead ends: 165 [2020-10-12 18:12:40,636 INFO L226 Difference]: Without dead ends: 118 [2020-10-12 18:12:40,637 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 18:12:40,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-12 18:12:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2020-10-12 18:12:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-12 18:12:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 147 transitions. [2020-10-12 18:12:40,645 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 147 transitions. Word has length 30 [2020-10-12 18:12:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:40,645 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 147 transitions. [2020-10-12 18:12:40,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:12:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 147 transitions. [2020-10-12 18:12:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 18:12:40,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:40,647 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 18:12:40,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:12:40,648 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:40,648 INFO L82 PathProgramCache]: Analyzing trace with hash 180888733, now seen corresponding path program 1 times [2020-10-12 18:12:40,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:40,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092580818] [2020-10-12 18:12:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:40,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:40,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:12:40,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:12:40,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 18:12:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:12:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:40,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:40,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:40,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:40,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:40,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:12:40,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092580818] [2020-10-12 18:12:40,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:40,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:12:40,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409640501] [2020-10-12 18:12:40,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:12:40,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:40,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:12:40,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:12:40,711 INFO L87 Difference]: Start difference. First operand 106 states and 147 transitions. Second operand 4 states. [2020-10-12 18:12:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:40,831 INFO L93 Difference]: Finished difference Result 173 states and 241 transitions. [2020-10-12 18:12:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:12:40,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-12 18:12:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:40,833 INFO L225 Difference]: With dead ends: 173 [2020-10-12 18:12:40,833 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 18:12:40,834 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 18:12:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 18:12:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-12 18:12:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 18:12:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2020-10-12 18:12:40,841 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 31 [2020-10-12 18:12:40,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:40,841 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2020-10-12 18:12:40,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:12:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2020-10-12 18:12:40,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 18:12:40,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:40,843 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 18:12:40,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:12:40,843 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:40,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash 317242888, now seen corresponding path program 1 times [2020-10-12 18:12:40,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:40,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46224702] [2020-10-12 18:12:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:40,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:40,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:40,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:12:40,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:12:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 18:12:40,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 18:12:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:12:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:40,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:40,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:40,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:40,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:40,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:12:40,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46224702] [2020-10-12 18:12:40,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:40,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:12:40,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441143438] [2020-10-12 18:12:40,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:12:40,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:40,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:12:40,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:12:40,932 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 4 states. [2020-10-12 18:12:41,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:41,069 INFO L93 Difference]: Finished difference Result 146 states and 193 transitions. [2020-10-12 18:12:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:12:41,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-12 18:12:41,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:41,070 INFO L225 Difference]: With dead ends: 146 [2020-10-12 18:12:41,071 INFO L226 Difference]: Without dead ends: 79 [2020-10-12 18:12:41,071 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 18:12:41,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-12 18:12:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-12 18:12:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 18:12:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-10-12 18:12:41,078 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 31 [2020-10-12 18:12:41,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:41,079 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-10-12 18:12:41,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:12:41,079 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-10-12 18:12:41,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:12:41,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:41,080 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 18:12:41,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:12:41,080 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:41,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:41,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1695196396, now seen corresponding path program 1 times [2020-10-12 18:12:41,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:41,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053626801] [2020-10-12 18:12:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:41,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:41,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:12:41,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:41,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 18:12:41,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 18:12:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:12:41,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:41,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:41,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:41,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:41,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:41,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:41,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:12:41,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053626801] [2020-10-12 18:12:41,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:41,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:12:41,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010680658] [2020-10-12 18:12:41,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:12:41,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:41,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:12:41,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:12:41,150 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 4 states. [2020-10-12 18:12:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:41,254 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-10-12 18:12:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:12:41,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-12 18:12:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:41,255 INFO L225 Difference]: With dead ends: 81 [2020-10-12 18:12:41,255 INFO L226 Difference]: Without dead ends: 77 [2020-10-12 18:12:41,256 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 18:12:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-12 18:12:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-12 18:12:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 18:12:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2020-10-12 18:12:41,261 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 32 [2020-10-12 18:12:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:41,261 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2020-10-12 18:12:41,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:12:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2020-10-12 18:12:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 18:12:41,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:41,263 INFO L422 BasicCegarLoop]: trace histogram [3, 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 18:12:41,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:12:41,263 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:41,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:41,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1000030502, now seen corresponding path program 1 times [2020-10-12 18:12:41,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:41,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200071773] [2020-10-12 18:12:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:41,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:41,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:41,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 18:12:41,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:41,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:12:41,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 18:12:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:12:41,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:41,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:41,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:41,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:41,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:41,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:41,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:41,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:12:41,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200071773] [2020-10-12 18:12:41,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:41,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:12:41,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523583936] [2020-10-12 18:12:41,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:12:41,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:41,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:12:41,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:12:41,326 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand 4 states. [2020-10-12 18:12:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:41,419 INFO L93 Difference]: Finished difference Result 118 states and 152 transitions. [2020-10-12 18:12:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:12:41,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-12 18:12:41,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:41,420 INFO L225 Difference]: With dead ends: 118 [2020-10-12 18:12:41,420 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 18:12:41,420 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 18:12:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 18:12:41,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 18:12:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 18:12:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 18:12:41,421 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-10-12 18:12:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:41,422 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 18:12:41,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:12:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 18:12:41,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 18:12:41,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:12:41,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 18:12:41,655 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 18:12:41,655 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|)) [2020-10-12 18:12:41,656 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:12:41,656 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:12:41,656 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 18:12:41,656 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 18:12:41,656 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 18:12:41,656 INFO L268 CegarLoopResult]: For program point L316(lines 316 331) no Hoare annotation was computed. [2020-10-12 18:12:41,657 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-10-12 18:12:41,657 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-10-12 18:12:41,657 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-10-12 18:12:41,657 INFO L268 CegarLoopResult]: For program point L184(lines 184 199) no Hoare annotation was computed. [2020-10-12 18:12:41,657 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-10-12 18:12:41,657 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-10-12 18:12:41,657 INFO L268 CegarLoopResult]: For program point L300(lines 300 315) no Hoare annotation was computed. [2020-10-12 18:12:41,657 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-10-12 18:12:41,658 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-10-12 18:12:41,658 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-10-12 18:12:41,658 INFO L268 CegarLoopResult]: For program point L284(lines 284 299) no Hoare annotation was computed. [2020-10-12 18:12:41,658 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-10-12 18:12:41,658 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-10-12 18:12:41,658 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-10-12 18:12:41,658 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-10-12 18:12:41,658 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-10-12 18:12:41,659 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-10-12 18:12:41,659 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-10-12 18:12:41,659 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-10-12 18:12:41,659 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-10-12 18:12:41,659 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-10-12 18:12:41,659 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-10-12 18:12:41,660 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-10-12 18:12:41,660 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-10-12 18:12:41,660 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and (<= 2 main_~q~0) .cse0 (<= main_~q~0 2)) (and (<= main_~q~0 0) .cse0) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)))) [2020-10-12 18:12:41,660 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-10-12 18:12:41,660 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-10-12 18:12:41,660 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-10-12 18:12:41,661 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-10-12 18:12:41,661 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-10-12 18:12:41,661 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-10-12 18:12:41,661 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-10-12 18:12:41,661 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-10-12 18:12:41,661 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-10-12 18:12:41,661 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-10-12 18:12:41,662 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-10-12 18:12:41,662 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-10-12 18:12:41,662 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-10-12 18:12:41,662 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-10-12 18:12:41,662 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-10-12 18:12:41,663 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-10-12 18:12:41,663 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-10-12 18:12:41,663 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-10-12 18:12:41,663 INFO L268 CegarLoopResult]: For program point L28(lines 28 43) no Hoare annotation was computed. [2020-10-12 18:12:41,663 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-10-12 18:12:41,663 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-10-12 18:12:41,664 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-10-12 18:12:41,664 INFO L268 CegarLoopResult]: For program point L80(lines 80 95) no Hoare annotation was computed. [2020-10-12 18:12:41,664 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-10-12 18:12:41,664 INFO L268 CegarLoopResult]: For program point L64(lines 64 79) no Hoare annotation was computed. [2020-10-12 18:12:41,664 INFO L268 CegarLoopResult]: For program point L48(lines 48 63) no Hoare annotation was computed. [2020-10-12 18:12:41,664 INFO L268 CegarLoopResult]: For program point L164(lines 164 179) no Hoare annotation was computed. [2020-10-12 18:12:41,664 INFO L268 CegarLoopResult]: For program point L148(lines 148 163) no Hoare annotation was computed. [2020-10-12 18:12:41,664 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-10-12 18:12:41,665 INFO L268 CegarLoopResult]: For program point L264(lines 264 279) no Hoare annotation was computed. [2020-10-12 18:12:41,665 INFO L268 CegarLoopResult]: For program point L132(lines 132 147) no Hoare annotation was computed. [2020-10-12 18:12:41,665 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-10-12 18:12:41,665 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-10-12 18:12:41,665 INFO L268 CegarLoopResult]: For program point L248(lines 248 263) no Hoare annotation was computed. [2020-10-12 18:12:41,665 INFO L268 CegarLoopResult]: For program point L116(lines 116 131) no Hoare annotation was computed. [2020-10-12 18:12:41,666 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-10-12 18:12:41,666 INFO L268 CegarLoopResult]: For program point L364(lines 364 379) no Hoare annotation was computed. [2020-10-12 18:12:41,666 INFO L268 CegarLoopResult]: For program point L232(lines 232 247) no Hoare annotation was computed. [2020-10-12 18:12:41,666 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-10-12 18:12:41,666 INFO L268 CegarLoopResult]: For program point L100(lines 100 115) no Hoare annotation was computed. [2020-10-12 18:12:41,666 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-10-12 18:12:41,667 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and (<= 2 main_~q~0) .cse0 (<= main_~q~0 2)) (and (= main_~q~0 3) (= 2 main_~this_state~0)) (and (<= main_~q~0 0) .cse0) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)))) [2020-10-12 18:12:41,667 INFO L268 CegarLoopResult]: For program point L348(lines 348 363) no Hoare annotation was computed. [2020-10-12 18:12:41,667 INFO L268 CegarLoopResult]: For program point L216(lines 216 231) no Hoare annotation was computed. [2020-10-12 18:12:41,667 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-10-12 18:12:41,667 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-10-12 18:12:41,667 INFO L268 CegarLoopResult]: For program point L332(lines 332 347) no Hoare annotation was computed. [2020-10-12 18:12:41,667 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-10-12 18:12:41,668 INFO L268 CegarLoopResult]: For program point L200(lines 200 215) no Hoare annotation was computed. [2020-10-12 18:12:41,668 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-10-12 18:12:41,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:12:41 BoogieIcfgContainer [2020-10-12 18:12:41,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 18:12:41,693 INFO L168 Benchmark]: Toolchain (without parser) took 4542.61 ms. Allocated memory was 140.0 MB in the beginning and 281.5 MB in the end (delta: 141.6 MB). Free memory was 103.6 MB in the beginning and 220.9 MB in the end (delta: -117.3 MB). Peak memory consumption was 112.8 MB. Max. memory is 7.1 GB. [2020-10-12 18:12:41,694 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 18:12:41,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.50 ms. Allocated memory is still 140.0 MB. Free memory was 103.4 MB in the beginning and 90.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-12 18:12:41,696 INFO L168 Benchmark]: Boogie Preprocessor took 124.77 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 90.9 MB in the beginning and 179.7 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-10-12 18:12:41,697 INFO L168 Benchmark]: RCFGBuilder took 482.11 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 150.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-10-12 18:12:41,698 INFO L168 Benchmark]: TraceAbstraction took 3605.61 ms. Allocated memory was 202.4 MB in the beginning and 281.5 MB in the end (delta: 79.2 MB). Free memory was 150.9 MB in the beginning and 220.9 MB in the end (delta: -69.9 MB). Peak memory consumption was 97.7 MB. Max. memory is 7.1 GB. [2020-10-12 18:12:41,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.50 ms. Allocated memory is still 140.0 MB. Free memory was 103.4 MB in the beginning and 90.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.77 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 90.9 MB in the beginning and 179.7 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.11 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 150.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3605.61 ms. Allocated memory was 202.4 MB in the beginning and 281.5 MB in the end (delta: 79.2 MB). Free memory was 150.9 MB in the beginning and 220.9 MB in the end (delta: -69.9 MB). Peak memory consumption was 97.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((2 <= q && this_state <= 0) && q <= 2) || (q == 3 && 2 == this_state)) || (q <= 0 && this_state <= 0)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((2 <= q && this_state <= 0) && q <= 2) || (q <= 0 && this_state <= 0)) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1014 SDtfs, 1458 SDslu, 73 SDs, 0 SdLazy, 650 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 80 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 174 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 15424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...