/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/loops-crafted-1/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:33:16,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:33:16,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:33:17,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:33:17,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:33:17,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:33:17,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:33:17,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:33:17,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:33:17,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:33:17,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:33:17,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:33:17,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:33:17,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:33:17,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:33:17,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:33:17,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:33:17,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:33:17,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:33:17,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:33:17,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:33:17,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:33:17,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:33:17,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:33:17,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:33:17,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:33:17,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:33:17,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:33:17,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:33:17,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:33:17,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:33:17,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:33:17,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:33:17,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:33:17,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:33:17,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:33:17,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:33:17,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:33:17,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:33:17,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:33:17,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:33:17,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:33:17,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:33:17,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:33:17,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:33:17,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:33:17,119 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:33:17,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:33:17,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:33:17,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:33:17,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:33:17,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:33:17,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:33:17,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:33:17,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:33:17,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:33:17,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:33:17,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:33:17,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:33:17,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:33:17,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:33:17,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:33:17,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:33:17,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:33:17,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:33:17,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:33:17,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:33:17,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:33:17,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:33:17,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:33:17,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:33:17,126 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:33:17,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:33:17,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:33:17,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:33:17,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:33:17,440 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:33:17,441 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-10-14 05:33:17,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e9fec993/e739ad85eef5414189823aac8985fd63/FLAGd2d45f0d2 [2020-10-14 05:33:17,956 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:33:17,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-10-14 05:33:17,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e9fec993/e739ad85eef5414189823aac8985fd63/FLAGd2d45f0d2 [2020-10-14 05:33:18,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e9fec993/e739ad85eef5414189823aac8985fd63 [2020-10-14 05:33:18,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:33:18,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:33:18,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:33:18,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:33:18,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:33:18,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9fa743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18, skipping insertion in model container [2020-10-14 05:33:18,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:33:18,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:33:18,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:33:18,655 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:33:18,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:33:18,690 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:33:18,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18 WrapperNode [2020-10-14 05:33:18,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:33:18,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:33:18,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:33:18,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:33:18,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:33:18,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:33:18,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:33:18,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:33:18,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:33:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:33:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:33:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:33:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:33:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:33:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:33:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:33:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:33:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:33:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:33:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:33:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:33:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:33:19,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:33:19,099 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:33:19,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:33:19 BoogieIcfgContainer [2020-10-14 05:33:19,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:33:19,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:33:19,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:33:19,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:33:19,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:33:18" (1/3) ... [2020-10-14 05:33:19,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794062dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:33:19, skipping insertion in model container [2020-10-14 05:33:19,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (2/3) ... [2020-10-14 05:33:19,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794062dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:33:19, skipping insertion in model container [2020-10-14 05:33:19,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:33:19" (3/3) ... [2020-10-14 05:33:19,111 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-10-14 05:33:19,122 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:33:19,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:33:19,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:33:19,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:33:19,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:33:19,167 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:33:19,167 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:33:19,167 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:33:19,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:33:19,168 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:33:19,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:33:19,186 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-14 05:33:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 05:33:19,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:19,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:19,194 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:19,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash -12471351, now seen corresponding path program 1 times [2020-10-14 05:33:19,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:19,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016347882] [2020-10-14 05:33:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:19,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:33:19,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 05:33:19,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:19,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:19,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:33:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:33:19,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:33:20,021 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 20 [2020-10-14 05:33:20,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:20,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:20,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:20,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:20,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:33:20,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:20,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:20,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:20,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016347882] [2020-10-14 05:33:20,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:33:20,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:33:20,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009773790] [2020-10-14 05:33:20,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:33:20,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:20,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:33:20,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:33:20,094 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-10-14 05:33:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:20,362 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2020-10-14 05:33:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:33:20,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-14 05:33:20,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:20,375 INFO L225 Difference]: With dead ends: 48 [2020-10-14 05:33:20,375 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 05:33:20,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:33:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 05:33:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-10-14 05:33:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 05:33:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-14 05:33:20,421 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2020-10-14 05:33:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:20,422 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-14 05:33:20,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:33:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-10-14 05:33:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 05:33:20,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:20,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:20,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:33:20,424 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash -793409467, now seen corresponding path program 1 times [2020-10-14 05:33:20,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:20,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708220821] [2020-10-14 05:33:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:20,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:20,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:20,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:33:20,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-14 05:33:20,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:20,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:33:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:33:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:21,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:21,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:21,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:21,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:33:21,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:21,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:21,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:33:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:21,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708220821] [2020-10-14 05:33:21,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:21,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:33:21,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252929579] [2020-10-14 05:33:21,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:33:21,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:21,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:33:21,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:33:21,056 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 8 states. [2020-10-14 05:33:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:21,272 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2020-10-14 05:33:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:33:21,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-14 05:33:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:21,274 INFO L225 Difference]: With dead ends: 37 [2020-10-14 05:33:21,274 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 05:33:21,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:33:21,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 05:33:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-14 05:33:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:33:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-14 05:33:21,283 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2020-10-14 05:33:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:21,283 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-14 05:33:21,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:33:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-14 05:33:21,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 05:33:21,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:21,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:21,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:33:21,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:21,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:21,285 INFO L82 PathProgramCache]: Analyzing trace with hash 117019209, now seen corresponding path program 2 times [2020-10-14 05:33:21,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:21,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084931412] [2020-10-14 05:33:21,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:33:21,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:33:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 05:33:21,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:33:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:33:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:33:23,737 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 40 DAG size of output: 16 [2020-10-14 05:33:23,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:23,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:23,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:23,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:23,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:23,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:33:23,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:23,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:23,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084931412] [2020-10-14 05:33:23,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:23,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:33:23,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234033116] [2020-10-14 05:33:23,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:23,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:23,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:23,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:23,769 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2020-10-14 05:33:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:25,996 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2020-10-14 05:33:25,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:33:25,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-14 05:33:25,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:25,998 INFO L225 Difference]: With dead ends: 35 [2020-10-14 05:33:25,998 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 05:33:25,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:33:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 05:33:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-10-14 05:33:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 05:33:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-14 05:33:26,005 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 18 [2020-10-14 05:33:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:26,006 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-14 05:33:26,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:26,006 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-14 05:33:26,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 05:33:26,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:26,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:26,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:33:26,007 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:26,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:26,008 INFO L82 PathProgramCache]: Analyzing trace with hash -367783497, now seen corresponding path program 1 times [2020-10-14 05:33:26,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:26,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601977084] [2020-10-14 05:33:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:26,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:33:26,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:26,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 05:33:26,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:26,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:33:26,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:26,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:33:26,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:26,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:26,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:26,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:26,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:26,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:26,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601977084] [2020-10-14 05:33:26,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:26,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:33:26,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330312548] [2020-10-14 05:33:26,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:26,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:26,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:26,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:26,261 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-10-14 05:33:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:30,539 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-10-14 05:33:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:33:30,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-14 05:33:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:30,541 INFO L225 Difference]: With dead ends: 34 [2020-10-14 05:33:30,542 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 05:33:30,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:33:30,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 05:33:30,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-14 05:33:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 05:33:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-14 05:33:30,548 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2020-10-14 05:33:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:30,549 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-14 05:33:30,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-14 05:33:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:33:30,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:30,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:30,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:33:30,550 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:30,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1925752910, now seen corresponding path program 1 times [2020-10-14 05:33:30,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:30,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384936850] [2020-10-14 05:33:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:30,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:33:30,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:33:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 05:33:30,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:30,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:33:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:33:30,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:30,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:30,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:30,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:30,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:30,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:30,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:30,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:30,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384936850] [2020-10-14 05:33:30,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:30,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:33:30,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068704634] [2020-10-14 05:33:30,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:30,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:30,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:30,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:30,818 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-10-14 05:33:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:30,913 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2020-10-14 05:33:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:33:30,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 05:33:30,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:30,915 INFO L225 Difference]: With dead ends: 35 [2020-10-14 05:33:30,915 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 05:33:30,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:33:30,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 05:33:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-14 05:33:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 05:33:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-14 05:33:30,922 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 20 [2020-10-14 05:33:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:30,922 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-14 05:33:30,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-14 05:33:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:33:30,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:30,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:30,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:33:30,924 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:30,924 INFO L82 PathProgramCache]: Analyzing trace with hash -594207024, now seen corresponding path program 1 times [2020-10-14 05:33:30,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:30,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686083054] [2020-10-14 05:33:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:30,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:31,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:31,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:33:31,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-14 05:33:31,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:31,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:33:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:33:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:31,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:31,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:31,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:31,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:31,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:31,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 05:33:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:33:31,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686083054] [2020-10-14 05:33:31,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:33:31,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:33:31,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258298943] [2020-10-14 05:33:31,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:33:31,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:31,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:33:31,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:33:31,341 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 7 states. [2020-10-14 05:33:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:31,458 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-10-14 05:33:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:33:31,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 05:33:31,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:31,460 INFO L225 Difference]: With dead ends: 24 [2020-10-14 05:33:31,460 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:33:31,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:33:31,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:33:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:33:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:33:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:33:31,461 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-14 05:33:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:31,462 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:33:31,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:33:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:33:31,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:33:31,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:33:31,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:33:31,559 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:33:31,559 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-10-14 05:33:31,559 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:33:31,560 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:33:31,560 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:33:31,560 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:33:31,560 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:33:31,560 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:33:31,560 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-14 05:33:31,560 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:33:31,561 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:33:31,561 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-10-14 05:33:31,561 INFO L268 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-10-14 05:33:31,561 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 33) no Hoare annotation was computed. [2020-10-14 05:33:31,561 INFO L268 CegarLoopResult]: For program point L23(lines 23 28) no Hoare annotation was computed. [2020-10-14 05:33:31,561 INFO L268 CegarLoopResult]: For program point L25-2(lines 21 28) no Hoare annotation was computed. [2020-10-14 05:33:31,561 INFO L268 CegarLoopResult]: For program point L21(lines 21 28) no Hoare annotation was computed. [2020-10-14 05:33:31,562 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 30) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) [2020-10-14 05:33:31,562 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 30) the Hoare annotation is: (let ((.cse1 (div main_~l~0 4294967296)) (.cse0 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0) 4294967296))) (let ((.cse3 (+ (* 4294967296 .cse0) main_~l~0)) (.cse2 (* 4294967296 .cse1))) (and (<= .cse0 .cse1) (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0 .cse2) .cse3) (< .cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0 .cse2 1))))) [2020-10-14 05:33:31,562 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 33) no Hoare annotation was computed. [2020-10-14 05:33:31,562 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 33) the Hoare annotation is: true [2020-10-14 05:33:31,562 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-14 05:33:31,562 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-14 05:33:31,563 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:33:31,563 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 05:33:31,563 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-14 05:33:31,563 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:33:31,563 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 05:33:31,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:33:31 BoogieIcfgContainer [2020-10-14 05:33:31,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:33:31,584 INFO L168 Benchmark]: Toolchain (without parser) took 13221.60 ms. Allocated memory was 147.8 MB in the beginning and 265.3 MB in the end (delta: 117.4 MB). Free memory was 104.5 MB in the beginning and 219.2 MB in the end (delta: -114.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-14 05:33:31,585 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 05:33:31,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.56 ms. Allocated memory is still 147.8 MB. Free memory was 104.1 MB in the beginning and 94.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:33:31,587 INFO L168 Benchmark]: Boogie Preprocessor took 121.75 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.5 MB in the beginning and 182.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-14 05:33:31,588 INFO L168 Benchmark]: RCFGBuilder took 289.61 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 167.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:33:31,589 INFO L168 Benchmark]: TraceAbstraction took 12477.53 ms. Allocated memory was 203.9 MB in the beginning and 265.3 MB in the end (delta: 61.3 MB). Free memory was 167.9 MB in the beginning and 219.2 MB in the end (delta: -51.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:33:31,593 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.56 ms. Allocated memory is still 147.8 MB. Free memory was 104.1 MB in the beginning and 94.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.75 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.5 MB in the beginning and 182.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.61 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 167.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12477.53 ms. Allocated memory was 203.9 MB in the beginning and 265.3 MB in the end (delta: 61.3 MB). Free memory was 167.9 MB in the beginning and 219.2 MB in the end (delta: -51.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: i + j + k + v4 <= l && l <= i + j + k + v4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 144 SDslu, 124 SDs, 0 SdLazy, 308 SolverSat, 43 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 14 PreInvPairs, 20 NumberOfFragments, 79 HoareAnnotationTreeSize, 14 FomulaSimplifications, 236 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 116 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 14664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 14/21 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...