/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:08:38,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:08:38,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:08:38,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:08:38,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:08:38,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:08:38,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:08:38,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:08:38,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:08:38,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:08:38,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:08:38,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:08:38,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:08:38,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:08:38,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:08:38,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:08:38,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:08:38,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:08:38,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:08:38,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:08:38,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:08:38,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:08:38,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:08:38,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:08:38,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 12:08:38,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:08:38,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:08:38,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:08:38,377 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 [2020-08-18 12:08:38,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:08:38,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:08:38,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:08:38,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:08:38,418 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:08:38,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:08:38,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:08:38,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:08:38,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:08:38,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:08:38,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:08:38,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:08:38,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:08:38,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:08:38,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:08:38,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:08:38,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:08:38,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:08:38,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:08:38,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:08:38,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:08:38,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:08:38,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:08:38,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:08:38,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:08:38,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:08:38,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:08:38,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:08:38,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:08:38,423 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=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:08:38,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:08:38,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:08:38,769 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:08:38,771 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:08:38,772 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:08:38,772 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-08-18 12:08:38,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d57c36b6/258a76510ab84891abf3f46aade2f78d/FLAG01624f57d [2020-08-18 12:08:39,273 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:08:39,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-08-18 12:08:39,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d57c36b6/258a76510ab84891abf3f46aade2f78d/FLAG01624f57d [2020-08-18 12:08:39,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d57c36b6/258a76510ab84891abf3f46aade2f78d [2020-08-18 12:08:39,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:08:39,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:08:39,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:08:39,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:08:39,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:08:39,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:08:39" (1/1) ... [2020-08-18 12:08:39,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec95236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39, skipping insertion in model container [2020-08-18 12:08:39,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:08:39" (1/1) ... [2020-08-18 12:08:39,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:08:39,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:08:39,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:08:39,917 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:08:39,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:08:39,957 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:08:39,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39 WrapperNode [2020-08-18 12:08:39,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:08:39,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:08:39,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:08:39,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:08:40,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39" (1/1) ... [2020-08-18 12:08:40,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39" (1/1) ... [2020-08-18 12:08:40,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39" (1/1) ... [2020-08-18 12:08:40,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39" (1/1) ... [2020-08-18 12:08:40,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39" (1/1) ... [2020-08-18 12:08:40,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39" (1/1) ... [2020-08-18 12:08:40,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39" (1/1) ... [2020-08-18 12:08:40,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:08:40,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:08:40,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:08:40,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:08:40,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39" (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 [2020-08-18 12:08:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:08:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:08:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 12:08:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 12:08:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-18 12:08:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:08:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 12:08:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 12:08:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:08:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:08:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:08:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 12:08:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 12:08:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:08:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 12:08:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:08:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:08:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:08:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 12:08:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:08:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:08:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:08:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:08:40,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:08:40,494 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 12:08:40,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:08:40 BoogieIcfgContainer [2020-08-18 12:08:40,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:08:40,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:08:40,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:08:40,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:08:40,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:08:39" (1/3) ... [2020-08-18 12:08:40,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77484080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:08:40, skipping insertion in model container [2020-08-18 12:08:40,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:08:39" (2/3) ... [2020-08-18 12:08:40,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77484080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:08:40, skipping insertion in model container [2020-08-18 12:08:40,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:08:40" (3/3) ... [2020-08-18 12:08:40,507 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-08-18 12:08:40,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:08:40,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:08:40,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:08:40,558 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:08:40,558 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:08:40,559 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:08:40,559 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:08:40,559 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:08:40,559 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:08:40,559 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:08:40,559 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:08:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-08-18 12:08:40,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 12:08:40,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:40,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:08:40,586 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:40,591 INFO L82 PathProgramCache]: Analyzing trace with hash -640327596, now seen corresponding path program 1 times [2020-08-18 12:08:40,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:40,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179151591] [2020-08-18 12:08:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:40,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:40,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:08:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 12:08:40,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179151591] [2020-08-18 12:08:40,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:40,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:08:40,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016052343] [2020-08-18 12:08:40,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:08:40,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:40,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:08:40,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:08:40,839 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-08-18 12:08:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:41,049 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2020-08-18 12:08:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 12:08:41,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 12:08:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:41,062 INFO L225 Difference]: With dead ends: 83 [2020-08-18 12:08:41,062 INFO L226 Difference]: Without dead ends: 40 [2020-08-18 12:08:41,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:08:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-18 12:08:41,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-18 12:08:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-18 12:08:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-08-18 12:08:41,120 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 30 [2020-08-18 12:08:41,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:41,121 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-08-18 12:08:41,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:08:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-08-18 12:08:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 12:08:41,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:41,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:08:41,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:08:41,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:41,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:41,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1442541232, now seen corresponding path program 1 times [2020-08-18 12:08:41,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:41,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630751703] [2020-08-18 12:08:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:41,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:41,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:41,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:08:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 12:08:41,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630751703] [2020-08-18 12:08:41,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:41,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 12:08:41,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181021817] [2020-08-18 12:08:41,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 12:08:41,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:41,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 12:08:41,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:08:41,335 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 8 states. [2020-08-18 12:08:41,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:41,803 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-08-18 12:08:41,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:08:41,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-08-18 12:08:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:41,808 INFO L225 Difference]: With dead ends: 64 [2020-08-18 12:08:41,808 INFO L226 Difference]: Without dead ends: 62 [2020-08-18 12:08:41,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:08:41,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-18 12:08:41,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-08-18 12:08:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-18 12:08:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-08-18 12:08:41,828 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 30 [2020-08-18 12:08:41,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:41,828 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-08-18 12:08:41,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 12:08:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-08-18 12:08:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 12:08:41,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:41,830 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:08:41,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:08:41,831 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:41,831 INFO L82 PathProgramCache]: Analyzing trace with hash 389656800, now seen corresponding path program 1 times [2020-08-18 12:08:41,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:41,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837757964] [2020-08-18 12:08:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:08:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 12:08:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 12:08:42,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837757964] [2020-08-18 12:08:42,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:08:42,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:08:42,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492074653] [2020-08-18 12:08:42,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:08:42,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:42,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:08:42,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:08:42,053 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 10 states. [2020-08-18 12:08:42,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:42,449 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-08-18 12:08:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 12:08:42,449 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-08-18 12:08:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:42,451 INFO L225 Difference]: With dead ends: 63 [2020-08-18 12:08:42,451 INFO L226 Difference]: Without dead ends: 55 [2020-08-18 12:08:42,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-08-18 12:08:42,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-18 12:08:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-18 12:08:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-18 12:08:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-08-18 12:08:42,465 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 33 [2020-08-18 12:08:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:42,465 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-08-18 12:08:42,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:08:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-08-18 12:08:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-18 12:08:42,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:42,468 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:08:42,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:08:42,468 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:42,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1379492317, now seen corresponding path program 1 times [2020-08-18 12:08:42,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:42,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322906880] [2020-08-18 12:08:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:08:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:08:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 12:08:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 12:08:42,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322906880] [2020-08-18 12:08:42,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:08:42,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 12:08:42,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009844900] [2020-08-18 12:08:42,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:08:42,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:42,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:08:42,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:08:42,635 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 10 states. [2020-08-18 12:08:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:43,128 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-08-18 12:08:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:08:43,128 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-08-18 12:08:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:43,130 INFO L225 Difference]: With dead ends: 66 [2020-08-18 12:08:43,130 INFO L226 Difference]: Without dead ends: 64 [2020-08-18 12:08:43,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-08-18 12:08:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-08-18 12:08:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2020-08-18 12:08:43,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 12:08:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-18 12:08:43,140 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 45 [2020-08-18 12:08:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:43,140 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-18 12:08:43,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:08:43,141 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-18 12:08:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 12:08:43,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:43,142 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:08:43,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:08:43,143 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:43,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:43,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1445821128, now seen corresponding path program 1 times [2020-08-18 12:08:43,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:43,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081726246] [2020-08-18 12:08:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:08:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:08:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 12:08:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:08:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 12:08:43,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081726246] [2020-08-18 12:08:43,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:08:43,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 12:08:43,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640903238] [2020-08-18 12:08:43,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:08:43,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:43,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:08:43,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:08:43,307 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-08-18 12:08:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:43,616 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-08-18 12:08:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:08:43,616 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-08-18 12:08:43,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:43,618 INFO L225 Difference]: With dead ends: 68 [2020-08-18 12:08:43,618 INFO L226 Difference]: Without dead ends: 42 [2020-08-18 12:08:43,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:08:43,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-18 12:08:43,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-18 12:08:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 12:08:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-08-18 12:08:43,626 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 48 [2020-08-18 12:08:43,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:43,626 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-08-18 12:08:43,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:08:43,627 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-08-18 12:08:43,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 12:08:43,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:08:43,628 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:08:43,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:08:43,629 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:08:43,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:08:43,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2146885706, now seen corresponding path program 1 times [2020-08-18 12:08:43,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:08:43,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641640581] [2020-08-18 12:08:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:08:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:08:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:08:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:08:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:08:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:08:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 12:08:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:08:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:08:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 12:08:43,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641640581] [2020-08-18 12:08:43,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:08:43,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 12:08:43,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24954950] [2020-08-18 12:08:43,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:08:43,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:08:43,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:08:43,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:08:43,829 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 12 states. [2020-08-18 12:08:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:08:44,220 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-08-18 12:08:44,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:08:44,220 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-08-18 12:08:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:08:44,221 INFO L225 Difference]: With dead ends: 44 [2020-08-18 12:08:44,221 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 12:08:44,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-08-18 12:08:44,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 12:08:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 12:08:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 12:08:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 12:08:44,225 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-08-18 12:08:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:08:44,226 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 12:08:44,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:08:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 12:08:44,226 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 12:08:44,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:08:44,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 12:08:44,828 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 12:08:44,829 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-18 12:08:44,829 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 12:08:44,829 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 12:08:44,829 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 12:08:44,830 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 12:08:44,830 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 12:08:44,830 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-08-18 12:08:44,830 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-08-18 12:08:44,831 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-08-18 12:08:44,831 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-08-18 12:08:44,831 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 38 52) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-08-18 12:08:44,831 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 38 52) no Hoare annotation was computed. [2020-08-18 12:08:44,831 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= main_~ax~1 0) (= main_~ai~1 0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-08-18 12:08:44,832 INFO L268 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-08-18 12:08:44,832 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-08-18 12:08:44,832 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 38 52) no Hoare annotation was computed. [2020-08-18 12:08:44,832 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-18 12:08:44,832 INFO L268 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-08-18 12:08:44,834 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-08-18 12:08:44,834 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-08-18 12:08:44,834 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-08-18 12:08:44,834 INFO L264 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-08-18 12:08:44,835 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-08-18 12:08:44,835 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (= |check_#in~x| 0)) (.cse2 ((as const (Array Int Int)) 0))) (or (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or .cse0 (not .cse1)) (or .cse0 (not (<= 1 |check_#in~x|))))) (and (= check_~ax~0 0) (= check_~ai~0 0) (= (select |#memory_int| check_~a.base) .cse2) (let ((.cse3 (<= (+ check_~y 1) check_~n))) (or (and .cse3 (<= 1 check_~x)) (and .cse1 .cse3 (= check_~x 0))))) (not (= (select |#memory_int| |check_#in~a.base|) .cse2)))) [2020-08-18 12:08:44,836 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-08-18 12:08:44,836 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 36) the Hoare annotation is: true [2020-08-18 12:08:44,836 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-18 12:08:44,836 INFO L268 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-08-18 12:08:44,836 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 25) the Hoare annotation is: (let ((.cse2 ((as const (Array Int Int)) 0)) (.cse1 (= |check_#in~x| 0))) (or (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or .cse0 (not .cse1)) (or .cse0 (not (<= 1 |check_#in~x|))))) (not (= (select |#memory_int| |check_#in~a.base|) .cse2)) (and (= (select |#memory_int| check_~a.base) .cse2) (let ((.cse3 (<= (+ check_~y 1) check_~n))) (or (and .cse3 (<= 1 check_~x)) (and .cse1 .cse3 (= check_~x 0))))))) [2020-08-18 12:08:44,837 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-08-18 12:08:44,837 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 36) no Hoare annotation was computed. [2020-08-18 12:08:44,837 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0)) (.cse1 (= |check_#in~x| 0)) (.cse2 (<= 1 |check_#in~x|))) (or (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or .cse0 (not .cse1)) (or .cse0 (not .cse2)))) (not (= (select |#memory_int| |check_#in~a.base|) .cse3)) (and (= (select |#memory_int| check_~a.base) .cse3) (let ((.cse4 (<= (+ check_~y 1) check_~n))) (or (and .cse1 .cse4 (= check_~x 0)) (and .cse4 .cse2 (<= 1 check_~x))))))) [2020-08-18 12:08:44,838 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0)) (.cse1 (= |check_#in~x| 0)) (.cse2 (<= 1 |check_#in~x|))) (or (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or .cse0 (not .cse1)) (or .cse0 (not .cse2)))) (not (= (select |#memory_int| |check_#in~a.base|) .cse3)) (and (= (select |#memory_int| check_~a.base) .cse3) (let ((.cse4 (<= (+ check_~y 1) check_~n))) (or (and .cse1 .cse4 (= check_~x 0)) (and .cse4 .cse2 (<= 1 check_~x))))))) [2020-08-18 12:08:44,838 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-08-18 12:08:44,838 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 36) no Hoare annotation was computed. [2020-08-18 12:08:44,838 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-08-18 12:08:44,838 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-08-18 12:08:44,838 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-08-18 12:08:44,839 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-08-18 12:08:44,839 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-08-18 12:08:44,839 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-08-18 12:08:44,839 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-18 12:08:44,839 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-08-18 12:08:44,843 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-08-18 12:08:44,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:08:44 BoogieIcfgContainer [2020-08-18 12:08:44,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:08:44,856 INFO L168 Benchmark]: Toolchain (without parser) took 5204.89 ms. Allocated memory was 142.1 MB in the beginning and 275.3 MB in the end (delta: 133.2 MB). Free memory was 104.7 MB in the beginning and 127.2 MB in the end (delta: -22.4 MB). Peak memory consumption was 110.7 MB. Max. memory is 7.1 GB. [2020-08-18 12:08:44,858 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 12:08:44,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.46 ms. Allocated memory is still 142.1 MB. Free memory was 104.5 MB in the beginning and 93.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-18 12:08:44,867 INFO L168 Benchmark]: Boogie Preprocessor took 120.06 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 93.9 MB in the beginning and 181.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-18 12:08:44,867 INFO L168 Benchmark]: RCFGBuilder took 419.24 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 162.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-08-18 12:08:44,868 INFO L168 Benchmark]: TraceAbstraction took 4351.95 ms. Allocated memory was 203.9 MB in the beginning and 275.3 MB in the end (delta: 71.3 MB). Free memory was 162.1 MB in the beginning and 127.2 MB in the end (delta: 35.0 MB). Peak memory consumption was 106.3 MB. Max. memory is 7.1 GB. [2020-08-18 12:08:44,880 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 308.46 ms. Allocated memory is still 142.1 MB. Free memory was 104.5 MB in the beginning and 93.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.06 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 93.9 MB in the beginning and 181.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.24 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 162.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4351.95 ms. Allocated memory was 203.9 MB in the beginning and 275.3 MB in the end (delta: 71.3 MB). Free memory was 162.1 MB in the beginning and 127.2 MB in the end (delta: 35.0 MB). Peak memory consumption was 106.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 191 SDtfs, 365 SDslu, 256 SDs, 0 SdLazy, 1298 SolverSat, 335 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 50 PreInvPairs, 60 NumberOfFragments, 326 HoareAnnotationTreeSize, 50 FomulaSimplifications, 474 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 292 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 23187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 54/61 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...