/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=NARROWEST --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/loop-industry-pattern/mod3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:49:27,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:49:27,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:49:27,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:49:27,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:49:27,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:49:27,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:49:27,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:49:27,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:49:27,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:49:27,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:49:27,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:49:27,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:49:27,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:49:27,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:49:27,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:49:27,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:49:27,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:49:27,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:49:27,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:49:27,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:49:27,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:49:27,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:49:27,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:49:27,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:49:27,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:49:27,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:49:27,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:49:27,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:49:27,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:49:27,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:49:27,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:49:27,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:49:27,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:49:27,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:49:27,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:49:27,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:49:27,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:49:27,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:49:27,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:49:27,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:49:27,851 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 [2020-10-13 10:49:27,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:49:27,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:49:27,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:49:27,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:49:27,874 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:49:27,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:49:27,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:49:27,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:49:27,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:49:27,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:49:27,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:49:27,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:49:27,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:49:27,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:49:27,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:49:27,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:49:27,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:49:27,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:49:27,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:49:27,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:49:27,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:49:27,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:49:27,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:49:27,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:49:27,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:49:27,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:49:27,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:49:27,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:49:27,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:49:27,879 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:49:28,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:49:28,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:49:28,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:49:28,191 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:49:28,191 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:49:28,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c [2020-10-13 10:49:28,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04332b389/f1fa7180ece74233b523e3f7515089b8/FLAG3a287c67b [2020-10-13 10:49:28,709 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:49:28,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c [2020-10-13 10:49:28,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04332b389/f1fa7180ece74233b523e3f7515089b8/FLAG3a287c67b [2020-10-13 10:49:29,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04332b389/f1fa7180ece74233b523e3f7515089b8 [2020-10-13 10:49:29,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:49:29,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:49:29,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:49:29,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:49:29,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:49:29,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:49:29" (1/1) ... [2020-10-13 10:49:29,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568e2849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29, skipping insertion in model container [2020-10-13 10:49:29,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:49:29" (1/1) ... [2020-10-13 10:49:29,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:49:29,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:49:29,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:49:29,327 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:49:29,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:49:29,355 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:49:29,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29 WrapperNode [2020-10-13 10:49:29,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:49:29,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:49:29,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:49:29,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:49:29,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29" (1/1) ... [2020-10-13 10:49:29,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29" (1/1) ... [2020-10-13 10:49:29,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29" (1/1) ... [2020-10-13 10:49:29,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29" (1/1) ... [2020-10-13 10:49:29,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29" (1/1) ... [2020-10-13 10:49:29,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29" (1/1) ... [2020-10-13 10:49:29,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29" (1/1) ... [2020-10-13 10:49:29,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:49:29,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:49:29,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:49:29,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:49:29,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29" (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 [2020-10-13 10:49:29,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:49:29,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:49:29,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 10:49:29,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:49:29,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:49:29,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:49:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:49:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:49:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:49:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:49:29,752 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:49:29,752 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 10:49:29,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:49:29 BoogieIcfgContainer [2020-10-13 10:49:29,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:49:29,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:49:29,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:49:29,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:49:29,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:49:29" (1/3) ... [2020-10-13 10:49:29,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93c2b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:49:29, skipping insertion in model container [2020-10-13 10:49:29,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:29" (2/3) ... [2020-10-13 10:49:29,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93c2b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:49:29, skipping insertion in model container [2020-10-13 10:49:29,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:49:29" (3/3) ... [2020-10-13 10:49:29,764 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c [2020-10-13 10:49:29,773 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:49:29,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:49:29,794 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:49:29,818 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:49:29,818 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:49:29,818 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:49:29,819 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:49:29,819 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:49:29,819 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:49:29,819 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:49:29,819 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:49:29,836 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-13 10:49:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-13 10:49:29,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:49:29,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:49:29,843 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:49:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:49:29,848 INFO L82 PathProgramCache]: Analyzing trace with hash 271538127, now seen corresponding path program 1 times [2020-10-13 10:49:29,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:49:29,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750877915] [2020-10-13 10:49:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:49:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:29,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:30,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:30,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:49:30,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:49:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 10:49:30,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:30,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:49:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:49:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:49:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:49:30,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:49:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:30,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:30,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:49:30,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:30,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:49:30,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:49:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:49:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:49:30,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:49:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:49:30,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750877915] [2020-10-13 10:49:30,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:49:30,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-13 10:49:30,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87220296] [2020-10-13 10:49:30,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-13 10:49:30,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:49:30,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-13 10:49:30,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 10:49:30,111 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-10-13 10:49:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:49:30,130 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-10-13 10:49:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-13 10:49:30,131 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-13 10:49:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:49:30,139 INFO L225 Difference]: With dead ends: 36 [2020-10-13 10:49:30,140 INFO L226 Difference]: Without dead ends: 16 [2020-10-13 10:49:30,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 10:49:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-13 10:49:30,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-13 10:49:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-13 10:49:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-10-13 10:49:30,175 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-10-13 10:49:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:49:30,176 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-10-13 10:49:30,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-13 10:49:30,176 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-10-13 10:49:30,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-13 10:49:30,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:49:30,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:49:30,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:49:30,178 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:49:30,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:49:30,179 INFO L82 PathProgramCache]: Analyzing trace with hash 183026044, now seen corresponding path program 1 times [2020-10-13 10:49:30,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:49:30,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580088954] [2020-10-13 10:49:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:49:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:30,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:30,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:30,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:49:30,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:30,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 10:49:30,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:49:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:49:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:49:30,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:49:30,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:49:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:30,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:30,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:49:30,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:49:30,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:49:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:49:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:49:30,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:49:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:49:30,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580088954] [2020-10-13 10:49:30,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:49:30,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:49:30,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626279003] [2020-10-13 10:49:30,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:49:30,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:49:30,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:49:30,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:49:30,371 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 3 states. [2020-10-13 10:49:30,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:49:30,405 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2020-10-13 10:49:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:49:30,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-13 10:49:30,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:49:30,407 INFO L225 Difference]: With dead ends: 27 [2020-10-13 10:49:30,407 INFO L226 Difference]: Without dead ends: 21 [2020-10-13 10:49:30,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:49:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-13 10:49:30,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-10-13 10:49:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-13 10:49:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-13 10:49:30,414 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2020-10-13 10:49:30,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:49:30,415 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-13 10:49:30,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:49:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-10-13 10:49:30,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 10:49:30,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:49:30,416 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:49:30,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:49:30,417 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:49:30,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:49:30,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1587594336, now seen corresponding path program 1 times [2020-10-13 10:49:30,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:49:30,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759342700] [2020-10-13 10:49:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:49:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:30,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:30,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:49:30,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-13 10:49:30,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:49:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:49:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:49:30,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:49:31,103 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 22 [2020-10-13 10:49:31,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:49:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:31,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:31,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:31,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:49:31,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:31,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:49:31,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:49:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:49:31,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:49:31,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:49:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:49:31,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759342700] [2020-10-13 10:49:31,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:49:31,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:49:31,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259164079] [2020-10-13 10:49:31,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:49:31,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:49:31,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:49:31,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:49:31,158 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2020-10-13 10:49:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:49:35,465 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-10-13 10:49:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:49:35,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-13 10:49:35,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:49:35,467 INFO L225 Difference]: With dead ends: 40 [2020-10-13 10:49:35,467 INFO L226 Difference]: Without dead ends: 23 [2020-10-13 10:49:35,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:49:35,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-13 10:49:35,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-13 10:49:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-13 10:49:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-13 10:49:35,473 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2020-10-13 10:49:35,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:49:35,474 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-13 10:49:35,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:49:35,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-13 10:49:35,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 10:49:35,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:49:35,475 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:49:35,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:49:35,476 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:49:35,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:49:35,476 INFO L82 PathProgramCache]: Analyzing trace with hash 816455220, now seen corresponding path program 1 times [2020-10-13 10:49:35,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:49:35,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280033391] [2020-10-13 10:49:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:49:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:35,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:35,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 10:49:35,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:35,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 10:49:35,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:35,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:49:35,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:49:35,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:49:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:49:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:49:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:35,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:35,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:35,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:49:35,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:49:35,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:49:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:49:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:49:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:49:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:49:35,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280033391] [2020-10-13 10:49:35,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:49:35,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:49:35,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160468591] [2020-10-13 10:49:35,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:49:35,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:49:35,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:49:35,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:49:35,791 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-10-13 10:49:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:49:42,105 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-10-13 10:49:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:49:42,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-13 10:49:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:49:42,106 INFO L225 Difference]: With dead ends: 40 [2020-10-13 10:49:42,106 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 10:49:42,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:49:42,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 10:49:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 10:49:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 10:49:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 10:49:42,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-13 10:49:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:49:42,110 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 10:49:42,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:49:42,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 10:49:42,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 10:49:42,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:49:42,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 10:49:42,218 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-13 10:49:42,218 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 10:49:42,218 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 10:49:42,218 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 10:49:42,219 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 10:49:42,219 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 10:49:42,219 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (<= (* 2863311531 main_~x~0) (let ((.cse0 (div main_~x~0 4294967296))) (let ((.cse1 (* .cse0 (- 4294967296)))) (let ((.cse2 (div (+ main_~x~0 .cse1) 3))) (+ (* 12297829383904690176 .cse0) (* 12297829383904690176 (div (+ main_~x~0 .cse1 (* .cse2 (- 3))) 4294967296)) (* 8589934592 .cse2) 1431655765))))) [2020-10-13 10:49:42,220 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 33) no Hoare annotation was computed. [2020-10-13 10:49:42,220 INFO L268 CegarLoopResult]: For program point L23(lines 23 26) no Hoare annotation was computed. [2020-10-13 10:49:42,220 INFO L264 CegarLoopResult]: At program point L23-2(lines 16 29) the Hoare annotation is: (or (and (<= (div main_~y~0 4294967296) 0) (<= 1 main_~y~0)) (<= (* 2863311531 main_~x~0) (let ((.cse0 (div main_~x~0 4294967296))) (let ((.cse1 (* .cse0 (- 4294967296)))) (let ((.cse2 (div (+ main_~x~0 .cse1) 3))) (+ (* 12297829383904690176 .cse0) (* 12297829383904690176 (div (+ main_~x~0 .cse1 (* .cse2 (- 3))) 4294967296)) (* 8589934592 .cse2) 1431655765)))))) [2020-10-13 10:49:42,220 INFO L268 CegarLoopResult]: For program point L17(lines 17 28) no Hoare annotation was computed. [2020-10-13 10:49:42,220 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 33) no Hoare annotation was computed. [2020-10-13 10:49:42,221 INFO L268 CegarLoopResult]: For program point L30(lines 30 31) no Hoare annotation was computed. [2020-10-13 10:49:42,221 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 12 33) the Hoare annotation is: true [2020-10-13 10:49:42,221 INFO L268 CegarLoopResult]: For program point L20(lines 20 27) no Hoare annotation was computed. [2020-10-13 10:49:42,221 INFO L268 CegarLoopResult]: For program point L16-1(lines 16 29) no Hoare annotation was computed. [2020-10-13 10:49:42,221 INFO L268 CegarLoopResult]: For program point L16-3(lines 12 33) no Hoare annotation was computed. [2020-10-13 10:49:42,222 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 10) the Hoare annotation is: true [2020-10-13 10:49:42,222 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 10) no Hoare annotation was computed. [2020-10-13 10:49:42,222 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-13 10:49:42,222 INFO L268 CegarLoopResult]: For program point L7(lines 7 8) no Hoare annotation was computed. [2020-10-13 10:49:42,222 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 10) no Hoare annotation was computed. [2020-10-13 10:49:42,223 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-13 10:49:42,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:49:42 BoogieIcfgContainer [2020-10-13 10:49:42,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:49:42,246 INFO L168 Benchmark]: Toolchain (without parser) took 13147.26 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 104.1 MB in the beginning and 113.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:49:42,246 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:49:42,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.72 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 94.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:49:42,249 INFO L168 Benchmark]: Boogie Preprocessor took 121.56 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 94.4 MB in the beginning and 183.8 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:49:42,250 INFO L168 Benchmark]: RCFGBuilder took 277.76 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 170.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:49:42,251 INFO L168 Benchmark]: TraceAbstraction took 12486.30 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 170.2 MB in the beginning and 113.9 MB in the end (delta: 56.3 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:49:42,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.72 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 94.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.56 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 94.4 MB in the beginning and 183.8 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 277.76 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 170.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12486.30 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 170.2 MB in the beginning and 113.9 MB in the end (delta: 56.3 MB). Peak memory consumption was 85.1 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: 16]: Loop Invariant Derived loop invariant: (y / 4294967296 <= 0 && 1 <= y) || 2863311531 * x <= 12297829383904690176 * (x / 4294967296) + 12297829383904690176 * ((x + x / 4294967296 * -4294967296 + (x + x / 4294967296 * -4294967296) / 3 * -3) / 4294967296) + 8589934592 * ((x + x / 4294967296 * -4294967296) / 3) + 1431655765 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 11 SDslu, 104 SDs, 0 SdLazy, 46 SolverSat, 8 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 103 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 83 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 5858 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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...