/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:28:02,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:28:02,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:28:02,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:28:02,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:28:02,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:28:02,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:28:02,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:28:02,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:28:02,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:28:02,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:28:02,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:28:02,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:28:02,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:28:02,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:28:02,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:28:02,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:28:02,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:28:02,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:28:02,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:28:02,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:28:02,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:28:02,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:28:02,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:28:02,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:28:02,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:28:02,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:28:02,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:28:02,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:28:02,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 17:28:02,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:28:02,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:28:02,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:28:02,745 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 [2020-08-21 17:28:02,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:28:02,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:28:02,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:28:02,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:28:02,788 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:28:02,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:28:02,788 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:28:02,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:28:02,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:28:02,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:28:02,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:28:02,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:28:02,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:28:02,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:28:02,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:28:02,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:28:02,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:28:02,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:28:02,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:28:02,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:28:02,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:28:02,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:28:02,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:28:02,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:28:02,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:28:02,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:28:02,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:28:02,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:28:02,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:28:02,794 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:28:03,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:28:03,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:28:03,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:28:03,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:28:03,115 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:28:03,116 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2020-08-21 17:28:03,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef182bad9/57227e1362f64638974e4e2e2e71a6e8/FLAGb8ccf52ee [2020-08-21 17:28:03,572 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:28:03,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2020-08-21 17:28:03,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef182bad9/57227e1362f64638974e4e2e2e71a6e8/FLAGb8ccf52ee [2020-08-21 17:28:03,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef182bad9/57227e1362f64638974e4e2e2e71a6e8 [2020-08-21 17:28:03,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:28:03,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:28:03,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:28:03,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:28:03,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:28:03,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:28:03" (1/1) ... [2020-08-21 17:28:03,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd0480f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:03, skipping insertion in model container [2020-08-21 17:28:03,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:28:03" (1/1) ... [2020-08-21 17:28:03,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:28:03,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:28:04,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:28:04,174 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:28:04,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:28:04,309 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:28:04,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:04 WrapperNode [2020-08-21 17:28:04,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:28:04,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:28:04,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:28:04,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:28:04,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:04" (1/1) ... [2020-08-21 17:28:04,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:04" (1/1) ... [2020-08-21 17:28:04,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:04" (1/1) ... [2020-08-21 17:28:04,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:04" (1/1) ... [2020-08-21 17:28:04,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:04" (1/1) ... [2020-08-21 17:28:04,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:04" (1/1) ... [2020-08-21 17:28:04,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:04" (1/1) ... [2020-08-21 17:28:04,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:28:04,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:28:04,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:28:04,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:28:04,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:04" (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 [2020-08-21 17:28:04,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:28:04,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:28:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 17:28:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:28:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:28:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 17:28:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 17:28:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 17:28:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-21 17:28:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:28:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:28:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:28:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:28:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:28:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:28:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:28:04,743 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:28:04,744 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 17:28:04,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:28:04 BoogieIcfgContainer [2020-08-21 17:28:04,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:28:04,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:28:04,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:28:04,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:28:04,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:28:03" (1/3) ... [2020-08-21 17:28:04,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b5906f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:28:04, skipping insertion in model container [2020-08-21 17:28:04,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:04" (2/3) ... [2020-08-21 17:28:04,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b5906f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:28:04, skipping insertion in model container [2020-08-21 17:28:04,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:28:04" (3/3) ... [2020-08-21 17:28:04,757 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2020-08-21 17:28:04,768 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:28:04,775 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-21 17:28:04,791 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-21 17:28:04,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:28:04,818 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:28:04,818 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:28:04,818 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:28:04,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:28:04,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:28:04,818 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:28:04,818 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:28:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-21 17:28:04,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 17:28:04,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:04,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:04,847 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:04,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1504353719, now seen corresponding path program 1 times [2020-08-21 17:28:04,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:04,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055578907] [2020-08-21 17:28:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:05,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055578907] [2020-08-21 17:28:05,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:05,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:28:05,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203005549] [2020-08-21 17:28:05,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:28:05,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:05,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:28:05,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:28:05,201 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-08-21 17:28:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:05,416 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2020-08-21 17:28:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:28:05,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-08-21 17:28:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:05,429 INFO L225 Difference]: With dead ends: 51 [2020-08-21 17:28:05,430 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 17:28:05,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:28:05,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 17:28:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-08-21 17:28:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 17:28:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-08-21 17:28:05,480 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 13 [2020-08-21 17:28:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:05,480 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-08-21 17:28:05,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:28:05,481 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-08-21 17:28:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 17:28:05,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:05,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:05,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:28:05,483 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:05,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:05,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1581018098, now seen corresponding path program 1 times [2020-08-21 17:28:05,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:05,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872421796] [2020-08-21 17:28:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:05,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:05,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872421796] [2020-08-21 17:28:05,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:05,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:28:05,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797131420] [2020-08-21 17:28:05,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:28:05,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:05,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:28:05,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:28:05,588 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-08-21 17:28:05,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:05,693 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-08-21 17:28:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:28:05,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-21 17:28:05,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:05,695 INFO L225 Difference]: With dead ends: 51 [2020-08-21 17:28:05,695 INFO L226 Difference]: Without dead ends: 49 [2020-08-21 17:28:05,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:05,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-21 17:28:05,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2020-08-21 17:28:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 17:28:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-08-21 17:28:05,706 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 14 [2020-08-21 17:28:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:05,706 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-08-21 17:28:05,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:28:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-08-21 17:28:05,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 17:28:05,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:05,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:05,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:28:05,708 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:05,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:05,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1644741047, now seen corresponding path program 1 times [2020-08-21 17:28:05,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:05,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184181685] [2020-08-21 17:28:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:05,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:05,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184181685] [2020-08-21 17:28:05,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:05,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:28:05,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840027370] [2020-08-21 17:28:05,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:28:05,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:05,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:28:05,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:28:05,781 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 4 states. [2020-08-21 17:28:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:05,906 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-08-21 17:28:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:28:05,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-21 17:28:05,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:05,907 INFO L225 Difference]: With dead ends: 60 [2020-08-21 17:28:05,908 INFO L226 Difference]: Without dead ends: 40 [2020-08-21 17:28:05,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:28:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-21 17:28:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-08-21 17:28:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 17:28:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-21 17:28:05,916 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 14 [2020-08-21 17:28:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:05,916 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-21 17:28:05,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:28:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-21 17:28:05,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 17:28:05,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:05,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:05,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:28:05,918 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:05,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:05,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1824116622, now seen corresponding path program 1 times [2020-08-21 17:28:05,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:05,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137749225] [2020-08-21 17:28:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:05,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:05,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137749225] [2020-08-21 17:28:05,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:05,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:28:05,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390440618] [2020-08-21 17:28:05,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:28:05,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:05,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:28:05,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:28:05,981 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-08-21 17:28:06,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:06,068 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-08-21 17:28:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:28:06,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-08-21 17:28:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:06,070 INFO L225 Difference]: With dead ends: 54 [2020-08-21 17:28:06,070 INFO L226 Difference]: Without dead ends: 34 [2020-08-21 17:28:06,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:28:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-21 17:28:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-08-21 17:28:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 17:28:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-21 17:28:06,077 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 15 [2020-08-21 17:28:06,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:06,077 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-21 17:28:06,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:28:06,077 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-21 17:28:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 17:28:06,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:06,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:06,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:28:06,079 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:06,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:06,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1385845809, now seen corresponding path program 1 times [2020-08-21 17:28:06,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:06,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684449333] [2020-08-21 17:28:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:07,068 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 88 [2020-08-21 17:28:07,492 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 72 [2020-08-21 17:28:07,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:07,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684449333] [2020-08-21 17:28:07,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:07,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:28:07,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413130771] [2020-08-21 17:28:07,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:28:07,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:07,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:28:07,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:28:07,567 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 10 states. [2020-08-21 17:28:09,961 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 40 [2020-08-21 17:28:10,258 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-08-21 17:28:10,453 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 42 [2020-08-21 17:28:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:12,751 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-08-21 17:28:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:28:12,752 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-08-21 17:28:12,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:12,756 INFO L225 Difference]: With dead ends: 58 [2020-08-21 17:28:12,756 INFO L226 Difference]: Without dead ends: 56 [2020-08-21 17:28:12,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:28:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-21 17:28:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2020-08-21 17:28:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 17:28:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-21 17:28:12,767 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2020-08-21 17:28:12,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:12,767 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-21 17:28:12,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:28:12,767 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-21 17:28:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 17:28:12,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:12,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:12,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:28:12,769 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:12,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:12,769 INFO L82 PathProgramCache]: Analyzing trace with hash -624217503, now seen corresponding path program 1 times [2020-08-21 17:28:12,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:12,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956244272] [2020-08-21 17:28:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:12,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956244272] [2020-08-21 17:28:12,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:12,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:12,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164145600] [2020-08-21 17:28:12,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:12,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:12,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:12,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:12,896 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-08-21 17:28:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:13,100 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2020-08-21 17:28:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:28:13,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-08-21 17:28:13,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:13,102 INFO L225 Difference]: With dead ends: 63 [2020-08-21 17:28:13,102 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 17:28:13,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:28:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 17:28:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 35. [2020-08-21 17:28:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 17:28:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-21 17:28:13,112 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 21 [2020-08-21 17:28:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:13,112 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-21 17:28:13,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:28:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-21 17:28:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 17:28:13,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:13,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:13,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:28:13,114 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:13,114 INFO L82 PathProgramCache]: Analyzing trace with hash -640274852, now seen corresponding path program 1 times [2020-08-21 17:28:13,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:13,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940185698] [2020-08-21 17:28:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:13,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:13,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940185698] [2020-08-21 17:28:13,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:13,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:28:13,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72859931] [2020-08-21 17:28:13,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:28:13,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:13,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:28:13,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:28:13,173 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 7 states. [2020-08-21 17:28:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:13,334 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-08-21 17:28:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:28:13,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-08-21 17:28:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:13,336 INFO L225 Difference]: With dead ends: 55 [2020-08-21 17:28:13,336 INFO L226 Difference]: Without dead ends: 53 [2020-08-21 17:28:13,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:28:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-21 17:28:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37. [2020-08-21 17:28:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 17:28:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-21 17:28:13,347 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 21 [2020-08-21 17:28:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:13,347 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-21 17:28:13,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:28:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-21 17:28:13,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 17:28:13,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:13,349 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:13,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:28:13,349 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:13,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:13,350 INFO L82 PathProgramCache]: Analyzing trace with hash 358048683, now seen corresponding path program 1 times [2020-08-21 17:28:13,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:13,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960267661] [2020-08-21 17:28:13,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:13,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:13,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960267661] [2020-08-21 17:28:13,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:28:13,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 17:28:13,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498382169] [2020-08-21 17:28:13,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:28:13,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:13,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:28:13,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:28:13,539 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-08-21 17:28:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:15,860 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-21 17:28:15,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:28:15,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-08-21 17:28:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:15,862 INFO L225 Difference]: With dead ends: 50 [2020-08-21 17:28:15,862 INFO L226 Difference]: Without dead ends: 29 [2020-08-21 17:28:15,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:28:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-21 17:28:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-08-21 17:28:15,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 17:28:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-08-21 17:28:15,869 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2020-08-21 17:28:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:15,869 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-08-21 17:28:15,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:28:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-08-21 17:28:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 17:28:15,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:15,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:15,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:28:15,871 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:15,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:15,871 INFO L82 PathProgramCache]: Analyzing trace with hash -874117243, now seen corresponding path program 1 times [2020-08-21 17:28:15,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:15,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340419420] [2020-08-21 17:28:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:20,281 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-08-21 17:28:20,755 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 39 [2020-08-21 17:28:21,263 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 40 [2020-08-21 17:28:23,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:23,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340419420] [2020-08-21 17:28:23,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:28:23,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 17:28:23,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614600937] [2020-08-21 17:28:23,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:28:23,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:23,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:28:23,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=79, Unknown=1, NotChecked=0, Total=110 [2020-08-21 17:28:23,529 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 11 states. [2020-08-21 17:28:26,011 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2020-08-21 17:28:28,203 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 42 [2020-08-21 17:28:32,683 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-08-21 17:28:32,917 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-08-21 17:28:32,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:32,928 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-08-21 17:28:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:28:32,928 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-08-21 17:28:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:32,929 INFO L225 Difference]: With dead ends: 30 [2020-08-21 17:28:32,929 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:28:32,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=77, Invalid=194, Unknown=1, NotChecked=0, Total=272 [2020-08-21 17:28:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:28:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:28:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:28:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:28:32,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-08-21 17:28:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:32,931 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:28:32,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:28:32,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:28:32,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:28:32,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:28:32,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:28:35,311 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 77 DAG size of output: 38 [2020-08-21 17:28:35,583 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 56 [2020-08-21 17:28:42,124 WARN L193 SmtUtils]: Spent 6.54 s on a formula simplification. DAG size of input: 119 DAG size of output: 56 [2020-08-21 17:28:42,189 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:28:42,189 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~__return_136~0 |old(~__return_136~0)|) (= |old(#valid)| |#valid|)) [2020-08-21 17:28:42,189 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:28:42,189 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:28:42,189 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 17:28:42,189 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 17:28:42,190 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:28:42,190 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-21 17:28:42,190 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-21 17:28:42,190 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-21 17:28:42,190 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-21 17:28:42,190 INFO L268 CegarLoopResult]: For program point L60(lines 60 86) no Hoare annotation was computed. [2020-08-21 17:28:42,190 INFO L268 CegarLoopResult]: For program point L27(lines 27 150) no Hoare annotation was computed. [2020-08-21 17:28:42,190 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 166) no Hoare annotation was computed. [2020-08-21 17:28:42,191 INFO L264 CegarLoopResult]: At program point L85(lines 60 86) the Hoare annotation is: (let ((.cse1 (div main_~main__index2~0 4294967296)) (.cse0 (div main_~main__index1~0 4294967296))) (and (not (= main_~main____CPAchecker_TMP_0~1 0)) (= main_~__VERIFIER_assert__cond~0 1) (<= (+ (* 4294967296 (div (+ main_~main__index2~0 (* .cse0 4294967296) (* .cse1 (- 4294967296)) 4294867297) 4294967296)) 1) main_~main__index1~0) (<= (+ main_~main__index1~0 (* 4294967296 .cse1) 1) (+ main_~main__index2~0 (* 4294967296 .cse0))))) [2020-08-21 17:28:42,191 INFO L268 CegarLoopResult]: For program point L19(lines 19 165) no Hoare annotation was computed. [2020-08-21 17:28:42,191 INFO L268 CegarLoopResult]: For program point L48(lines 48 136) no Hoare annotation was computed. [2020-08-21 17:28:42,191 INFO L264 CegarLoopResult]: At program point L77(lines 44 137) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~main__index2~0 4294967296)))) (let ((.cse1 (= main_~__VERIFIER_assert__cond~0 1)) (.cse2 (<= (+ main_~main__index1~0 .cse0 1) (+ main_~main__index2~0 (* 4294967296 (div main_~main__index1~0 4294967296)))))) (or (and (<= main_~main__index2~0 (+ .cse0 99999)) .cse1 (= main_~main____CPAchecker_TMP_0~0 1) .cse2) (and .cse1 (<= main_~main__index2~0 (+ (* 4294967296 (div (+ (* (div (+ main_~main__index1~0 (* main_~main__index2~0 (- 1)) 4294967294) 4294967296) (- 4294967296)) main_~main__index1~0 (- 1)) 4294967296)) 99998)) (not (= main_~__VERIFIER_assert__cond~1 0)) .cse2)))) [2020-08-21 17:28:42,191 INFO L268 CegarLoopResult]: For program point L106(lines 106 118) no Hoare annotation was computed. [2020-08-21 17:28:42,192 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-08-21 17:28:42,192 INFO L268 CegarLoopResult]: For program point L69(lines 69 78) no Hoare annotation was computed. [2020-08-21 17:28:42,192 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 108) no Hoare annotation was computed. [2020-08-21 17:28:42,192 INFO L264 CegarLoopResult]: At program point L90(lines 58 91) the Hoare annotation is: false [2020-08-21 17:28:42,192 INFO L268 CegarLoopResult]: For program point L24(lines 24 155) no Hoare annotation was computed. [2020-08-21 17:28:42,192 INFO L264 CegarLoopResult]: At program point L144(lines 29 145) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~main__index2~0 4294967296)))) (and (<= main_~main__index2~0 (+ .cse0 99999)) (= main_~main__loop_entered~0 0) (= main_~main____CPAchecker_TMP_0~0 1) (<= (+ main_~main__index1~0 .cse0 1) (+ main_~main__index2~0 (* 4294967296 (div main_~main__index1~0 4294967296)))))) [2020-08-21 17:28:42,193 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-08-21 17:28:42,193 INFO L268 CegarLoopResult]: For program point L29(lines 29 145) no Hoare annotation was computed. [2020-08-21 17:28:42,193 INFO L268 CegarLoopResult]: For program point L58(lines 58 91) no Hoare annotation was computed. [2020-08-21 17:28:42,193 INFO L264 CegarLoopResult]: At program point L149(lines 27 150) the Hoare annotation is: false [2020-08-21 17:28:42,193 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 166) no Hoare annotation was computed. [2020-08-21 17:28:42,193 INFO L268 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-08-21 17:28:42,193 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-08-21 17:28:42,193 INFO L268 CegarLoopResult]: For program point L38(lines 38 137) no Hoare annotation was computed. [2020-08-21 17:28:42,194 INFO L271 CegarLoopResult]: At program point L129(lines 96 130) the Hoare annotation is: true [2020-08-21 17:28:42,194 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 40) no Hoare annotation was computed. [2020-08-21 17:28:42,194 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 166) the Hoare annotation is: (and (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= |old(#valid)| |#valid|)) [2020-08-21 17:28:42,194 INFO L264 CegarLoopResult]: At program point L154(lines 24 155) the Hoare annotation is: (or (= main_~main__loop_entered~0 0) (and (let ((.cse0 (div main_~main__index2~0 4294967296)) (.cse1 (div main_~main__index1~0 4294967296))) (or (<= (+ main_~main__index1~0 (* 4294967296 .cse0)) (+ main_~main__index2~0 (* 4294967296 .cse1))) (let ((.cse6 (select |#memory_int| |main_~#main__array~0.base|))) (let ((.cse5 (select .cse6 (+ (* main_~main__index1~0 4) |main_~#main__array~0.offset| (* .cse1 (- 17179869184))))) (.cse3 (select .cse6 (+ (* main_~main__index2~0 4) |main_~#main__array~0.offset| (* .cse0 (- 17179869184)))))) (let ((.cse4 (+ .cse5 (* 4294967296 (div .cse3 4294967296)))) (.cse2 (* 4294967296 (div .cse5 4294967296)))) (and (<= (+ .cse2 .cse3) .cse4) (< .cse4 (+ .cse2 .cse3 1)))))))) (= main_~__VERIFIER_assert__cond~0 1) (<= main_~main__index2~0 (+ (* 4294967296 (div (+ (* (div (+ main_~main__index1~0 (* main_~main__index2~0 (- 1)) 4294967294) 4294967296) (- 4294967296)) main_~main__index1~0 (- 1)) 4294967296)) 99998)))) [2020-08-21 17:28:42,194 INFO L268 CegarLoopResult]: For program point L55(lines 55 131) no Hoare annotation was computed. [2020-08-21 17:28:42,195 INFO L268 CegarLoopResult]: For program point L22(lines 22 160) no Hoare annotation was computed. [2020-08-21 17:28:42,195 INFO L264 CegarLoopResult]: At program point L117(lines 97 126) the Hoare annotation is: (let ((.cse1 (= main_~__VERIFIER_assert__cond~0 1)) (.cse3 (div main_~main__index2~0 4294967296)) (.cse2 (div main_~main__index1~0 4294967296))) (or (let ((.cse0 (* 4294967296 .cse3))) (and (<= main_~main__index2~0 (+ .cse0 99999)) .cse1 (<= (+ main_~main__index1~0 .cse0 1) (+ main_~main__index2~0 (* 4294967296 .cse2))))) (let ((.cse8 (select |#memory_int| |main_~#main__array~0.base|))) (let ((.cse7 (select .cse8 (+ (* main_~main__index1~0 4) |main_~#main__array~0.offset| (* .cse2 (- 17179869184))))) (.cse5 (select .cse8 (+ (* main_~main__index2~0 4) |main_~#main__array~0.offset| (* .cse3 (- 17179869184)))))) (let ((.cse6 (+ .cse7 (* 4294967296 (div .cse5 4294967296)))) (.cse4 (* 4294967296 (div .cse7 4294967296)))) (and (<= (+ .cse4 .cse5) .cse6) .cse1 (< .cse6 (+ .cse4 .cse5 1)) (<= main_~main__index2~0 (+ (* 4294967296 (div (+ (* (div (+ main_~main__index1~0 (* main_~main__index2~0 (- 1)) 4294967294) 4294967296) (- 4294967296)) main_~main__index1~0 (- 1)) 4294967296)) 99998)))))))) [2020-08-21 17:28:42,212 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,213 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,214 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,214 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,214 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,214 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,215 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,215 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,218 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,218 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,218 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,220 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,221 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,221 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,221 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,221 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,222 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,222 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,222 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,224 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,224 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,224 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,224 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,224 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,225 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,225 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,225 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:28:42 BoogieIcfgContainer [2020-08-21 17:28:42,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:28:42,231 INFO L168 Benchmark]: Toolchain (without parser) took 38305.01 ms. Allocated memory was 139.5 MB in the beginning and 274.7 MB in the end (delta: 135.3 MB). Free memory was 102.9 MB in the beginning and 200.9 MB in the end (delta: -98.0 MB). Peak memory consumption was 141.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:42,232 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 17:28:42,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.65 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 181.3 MB in the end (delta: -78.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:42,234 INFO L168 Benchmark]: Boogie Preprocessor took 41.28 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:42,234 INFO L168 Benchmark]: RCFGBuilder took 396.96 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 158.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:42,235 INFO L168 Benchmark]: TraceAbstraction took 37479.62 ms. Allocated memory was 202.4 MB in the beginning and 274.7 MB in the end (delta: 72.4 MB). Free memory was 158.9 MB in the beginning and 200.9 MB in the end (delta: -42.0 MB). Peak memory consumption was 135.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:42,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 382.65 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 181.3 MB in the end (delta: -78.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.28 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.96 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 158.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37479.62 ms. Allocated memory was 202.4 MB in the beginning and 274.7 MB in the end (delta: 72.4 MB). Free memory was 158.9 MB in the beginning and 200.9 MB in the end (delta: -42.0 MB). Peak memory consumption was 135.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 40]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 108]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 71]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && __VERIFIER_assert__cond == 1) && main____CPAchecker_TMP_0 == 1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296)) || (((__VERIFIER_assert__cond == 1 && main__index2 <= 4294967296 * (((main__index1 + main__index2 * -1 + 4294967294) / 4294967296 * -4294967296 + main__index1 + -1) / 4294967296) + 99998) && !(__VERIFIER_assert__cond == 0)) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296)) - InvariantResult [Line: 24]: Loop Invariant [2020-08-21 17:28:42,251 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,252 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,252 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,252 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,252 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,252 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,253 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,253 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,254 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,254 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,254 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,255 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,255 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,255 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,255 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,256 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: main__loop_entered == 0 || (((main__index1 + 4294967296 * (main__index2 / 4294967296) <= main__index2 + 4294967296 * (main__index1 / 4294967296) || (4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] <= unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) && unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) < 4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] + 1)) && __VERIFIER_assert__cond == 1) && main__index2 <= 4294967296 * (((main__index1 + main__index2 * -1 + 4294967294) / 4294967296 * -4294967296 + main__index1 + -1) / 4294967296) + 99998) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 97]: Loop Invariant [2020-08-21 17:28:42,257 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,257 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,257 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,258 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,258 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,258 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,258 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,258 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,259 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,260 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,260 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,260 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,260 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 17:28:42,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && __VERIFIER_assert__cond == 1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296)) || (((4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] <= unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) && __VERIFIER_assert__cond == 1) && unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) < 4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] + 1) && main__index2 <= 4294967296 * (((main__index1 + main__index2 * -1 + 4294967294) / 4294967296 * -4294967296 + main__index1 + -1) / 4294967296) + 99998) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((!(main____CPAchecker_TMP_0 == 0) && __VERIFIER_assert__cond == 1) && 4294967296 * ((main__index2 + main__index1 / 4294967296 * 4294967296 + main__index2 / 4294967296 * -4294967296 + 4294867297) / 4294967296) + 1 <= main__index1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && main__loop_entered == 0) && main____CPAchecker_TMP_0 == 1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.1s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 17.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 292 SDslu, 378 SDs, 0 SdLazy, 586 SolverSat, 37 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 11.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=7, 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, 9 MinimizatonAttempts, 83 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 24 NumberOfFragments, 557 HoareAnnotationTreeSize, 12 FomulaSimplifications, 19374 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 1975 FormulaSimplificationTreeSizeReductionInter, 9.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 75619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 3/5 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...