/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:20:15,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:20:15,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:20:15,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:20:15,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:20:15,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:20:15,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:20:15,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:20:15,873 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:20:15,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:20:15,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:20:15,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:20:15,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:20:15,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:20:15,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:20:15,874 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:20:15,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:20:15,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:20:15,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:20:15,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:20:15,875 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:20:15,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:20:15,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:20:15,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:20:15,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:20:15,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:20:15,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:20:15,877 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:20:16,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:20:16,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:20:16,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:20:16,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:20:16,419 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:20:16,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2021-02-24 00:20:16,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1df29534/af805e60774649a9911f4f00d90b5dcf/FLAGcf83834a6 [2021-02-24 00:20:17,390 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:20:17,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2021-02-24 00:20:17,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1df29534/af805e60774649a9911f4f00d90b5dcf/FLAGcf83834a6 [2021-02-24 00:20:17,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1df29534/af805e60774649a9911f4f00d90b5dcf [2021-02-24 00:20:17,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:20:17,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:20:17,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:17,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:20:17,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:20:17,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:17" (1/1) ... [2021-02-24 00:20:17,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e84b659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:17, skipping insertion in model container [2021-02-24 00:20:17,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:17" (1/1) ... [2021-02-24 00:20:17,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:20:17,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:20:18,034 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i[893,906] [2021-02-24 00:20:18,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:18,079 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:20:18,109 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i[893,906] [2021-02-24 00:20:18,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:18,175 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:20:18,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:18 WrapperNode [2021-02-24 00:20:18,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:18,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:20:18,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:20:18,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:20:18,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:18" (1/1) ... [2021-02-24 00:20:18,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:18" (1/1) ... [2021-02-24 00:20:18,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:18" (1/1) ... [2021-02-24 00:20:18,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:18" (1/1) ... [2021-02-24 00:20:18,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:18" (1/1) ... [2021-02-24 00:20:18,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:18" (1/1) ... [2021-02-24 00:20:18,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:18" (1/1) ... [2021-02-24 00:20:18,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:20:18,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:20:18,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:20:18,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:20:18,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-24 00:20:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:20:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:20:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:20:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:20:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:20:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:20:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:20:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:20:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 00:20:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 00:20:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:20:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:20:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:20:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:20:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:20:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:20:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:20:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:20:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:20:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:20:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:20:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:20:19,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:20:19,029 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 00:20:19,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:19 BoogieIcfgContainer [2021-02-24 00:20:19,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:20:19,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:20:19,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:20:19,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:20:19,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:20:17" (1/3) ... [2021-02-24 00:20:19,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b811bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:19, skipping insertion in model container [2021-02-24 00:20:19,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:18" (2/3) ... [2021-02-24 00:20:19,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b811bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:19, skipping insertion in model container [2021-02-24 00:20:19,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:19" (3/3) ... [2021-02-24 00:20:19,048 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2021-02-24 00:20:19,056 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:20:19,061 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:20:19,089 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:20:19,126 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:20:19,126 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:20:19,126 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:20:19,127 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:20:19,127 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:20:19,127 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:20:19,127 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:20:19,127 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:20:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2021-02-24 00:20:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-24 00:20:19,165 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:19,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:19,167 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:19,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:19,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1417410242, now seen corresponding path program 1 times [2021-02-24 00:20:19,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:19,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260776794] [2021-02-24 00:20:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:19,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:19,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:19,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:19,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:19,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:19,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:19,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:19,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260776794] [2021-02-24 00:20:19,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:20:19,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:20:19,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122711877] [2021-02-24 00:20:19,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:20:19,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:19,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:20:19,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:20:19,619 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2021-02-24 00:20:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:19,821 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2021-02-24 00:20:19,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:20:19,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2021-02-24 00:20:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:19,845 INFO L225 Difference]: With dead ends: 83 [2021-02-24 00:20:19,846 INFO L226 Difference]: Without dead ends: 55 [2021-02-24 00:20:19,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:20:19,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-24 00:20:19,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-02-24 00:20:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-24 00:20:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-02-24 00:20:19,979 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 34 [2021-02-24 00:20:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:19,980 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-02-24 00:20:19,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:20:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-02-24 00:20:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-24 00:20:19,983 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:19,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:19,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:20:19,985 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:19,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:19,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1385213215, now seen corresponding path program 1 times [2021-02-24 00:20:19,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:19,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373897761] [2021-02-24 00:20:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:20,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:20,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:20,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:20,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:20,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:20,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:20,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:20,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373897761] [2021-02-24 00:20:20,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:20:20,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 00:20:20,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289357758] [2021-02-24 00:20:20,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:20:20,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:20,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:20:20,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:20:20,267 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 6 states. [2021-02-24 00:20:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:20,659 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-02-24 00:20:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:20:20,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-02-24 00:20:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:20,662 INFO L225 Difference]: With dead ends: 74 [2021-02-24 00:20:20,663 INFO L226 Difference]: Without dead ends: 58 [2021-02-24 00:20:20,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:20:20,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-24 00:20:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-02-24 00:20:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-24 00:20:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-02-24 00:20:20,686 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 34 [2021-02-24 00:20:20,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:20,687 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-02-24 00:20:20,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:20:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-02-24 00:20:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-24 00:20:20,689 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:20,690 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:20,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:20:20,690 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:20,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:20,691 INFO L82 PathProgramCache]: Analyzing trace with hash -359389512, now seen corresponding path program 1 times [2021-02-24 00:20:20,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:20,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568813719] [2021-02-24 00:20:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:20,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:20,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:20,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:20,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:20,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:20,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:20,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:20,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:20,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:20,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:20,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568813719] [2021-02-24 00:20:20,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:20,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:20:20,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794027528] [2021-02-24 00:20:20,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:20:20,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:20,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:20:20,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:20:20,870 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 8 states. [2021-02-24 00:20:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:21,396 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-02-24 00:20:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:20:21,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2021-02-24 00:20:21,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:21,405 INFO L225 Difference]: With dead ends: 95 [2021-02-24 00:20:21,405 INFO L226 Difference]: Without dead ends: 93 [2021-02-24 00:20:21,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-02-24 00:20:21,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-24 00:20:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 73. [2021-02-24 00:20:21,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-24 00:20:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2021-02-24 00:20:21,458 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 44 [2021-02-24 00:20:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:21,459 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2021-02-24 00:20:21,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:20:21,459 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2021-02-24 00:20:21,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 00:20:21,465 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:21,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:21,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:20:21,466 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:21,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:21,469 INFO L82 PathProgramCache]: Analyzing trace with hash 103516029, now seen corresponding path program 1 times [2021-02-24 00:20:21,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:21,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750040468] [2021-02-24 00:20:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:21,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:21,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:21,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:21,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:21,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:21,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:21,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:21,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:21,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:21,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:21,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:21,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:21,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:21,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:21,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:21,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:21,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:21,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750040468] [2021-02-24 00:20:21,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:21,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:20:21,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078431310] [2021-02-24 00:20:21,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:20:21,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:21,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:20:21,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:20:21,680 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 8 states. [2021-02-24 00:20:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:22,246 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2021-02-24 00:20:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:20:22,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2021-02-24 00:20:22,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:22,258 INFO L225 Difference]: With dead ends: 112 [2021-02-24 00:20:22,258 INFO L226 Difference]: Without dead ends: 110 [2021-02-24 00:20:22,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-02-24 00:20:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-24 00:20:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2021-02-24 00:20:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-02-24 00:20:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-02-24 00:20:22,325 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 45 [2021-02-24 00:20:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:22,326 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-02-24 00:20:22,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:20:22,329 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-02-24 00:20:22,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 00:20:22,331 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:22,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:22,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:20:22,333 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:22,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:22,334 INFO L82 PathProgramCache]: Analyzing trace with hash -90416355, now seen corresponding path program 1 times [2021-02-24 00:20:22,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:22,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221407283] [2021-02-24 00:20:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:22,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:22,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:22,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:22,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:22,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:22,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:22,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:22,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:22,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221407283] [2021-02-24 00:20:22,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:22,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:20:22,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910642926] [2021-02-24 00:20:22,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:20:22,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:22,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:20:22,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:20:22,511 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 8 states. [2021-02-24 00:20:23,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:23,087 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2021-02-24 00:20:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:20:23,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2021-02-24 00:20:23,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:23,089 INFO L225 Difference]: With dead ends: 123 [2021-02-24 00:20:23,089 INFO L226 Difference]: Without dead ends: 121 [2021-02-24 00:20:23,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-02-24 00:20:23,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-24 00:20:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 104. [2021-02-24 00:20:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-02-24 00:20:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2021-02-24 00:20:23,116 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 45 [2021-02-24 00:20:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:23,117 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2021-02-24 00:20:23,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:20:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2021-02-24 00:20:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-24 00:20:23,119 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:23,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:23,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:20:23,120 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:23,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1788729638, now seen corresponding path program 1 times [2021-02-24 00:20:23,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:23,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693507021] [2021-02-24 00:20:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:23,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:23,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:23,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:23,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:23,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:23,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:23,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:23,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:23,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:23,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:23,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:23,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-24 00:20:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:23,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:23,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693507021] [2021-02-24 00:20:23,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:23,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:20:23,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333075975] [2021-02-24 00:20:23,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:20:23,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:23,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:20:23,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:20:23,347 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand 10 states. [2021-02-24 00:20:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:24,146 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2021-02-24 00:20:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:20:24,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2021-02-24 00:20:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:24,150 INFO L225 Difference]: With dead ends: 136 [2021-02-24 00:20:24,150 INFO L226 Difference]: Without dead ends: 134 [2021-02-24 00:20:24,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:20:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-24 00:20:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2021-02-24 00:20:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-02-24 00:20:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 130 transitions. [2021-02-24 00:20:24,187 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 130 transitions. Word has length 56 [2021-02-24 00:20:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:24,188 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 130 transitions. [2021-02-24 00:20:24,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:20:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 130 transitions. [2021-02-24 00:20:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-24 00:20:24,191 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:24,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:24,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:20:24,192 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:24,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:24,193 INFO L82 PathProgramCache]: Analyzing trace with hash -871975098, now seen corresponding path program 1 times [2021-02-24 00:20:24,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:24,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244091719] [2021-02-24 00:20:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:24,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:24,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:24,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:24,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:24,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:24,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:24,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:24,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244091719] [2021-02-24 00:20:24,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:24,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:20:24,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149917836] [2021-02-24 00:20:24,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:20:24,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:24,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:20:24,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:20:24,370 INFO L87 Difference]: Start difference. First operand 117 states and 130 transitions. Second operand 7 states. [2021-02-24 00:20:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:24,727 INFO L93 Difference]: Finished difference Result 157 states and 173 transitions. [2021-02-24 00:20:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:20:24,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2021-02-24 00:20:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:24,731 INFO L225 Difference]: With dead ends: 157 [2021-02-24 00:20:24,732 INFO L226 Difference]: Without dead ends: 77 [2021-02-24 00:20:24,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:20:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-24 00:20:24,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-02-24 00:20:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-24 00:20:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2021-02-24 00:20:24,760 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 55 [2021-02-24 00:20:24,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:24,761 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2021-02-24 00:20:24,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:20:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2021-02-24 00:20:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-24 00:20:24,763 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:24,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:24,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:20:24,764 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:24,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1996932501, now seen corresponding path program 1 times [2021-02-24 00:20:24,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:24,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227932579] [2021-02-24 00:20:24,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:24,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:24,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:24,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:24,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:24,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:24,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:24,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:24,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:24,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:24,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:24,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:24,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-24 00:20:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:24,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:24,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:24,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227932579] [2021-02-24 00:20:24,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:24,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:20:24,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110182964] [2021-02-24 00:20:24,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:20:24,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:24,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:20:24,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:20:24,951 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 10 states. [2021-02-24 00:20:25,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:25,536 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2021-02-24 00:20:25,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:20:25,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2021-02-24 00:20:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:25,550 INFO L225 Difference]: With dead ends: 103 [2021-02-24 00:20:25,550 INFO L226 Difference]: Without dead ends: 101 [2021-02-24 00:20:25,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:20:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-02-24 00:20:25,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 76. [2021-02-24 00:20:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-24 00:20:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2021-02-24 00:20:25,567 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 57 [2021-02-24 00:20:25,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:25,568 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2021-02-24 00:20:25,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:20:25,568 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2021-02-24 00:20:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-24 00:20:25,570 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:25,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:25,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:20:25,570 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:25,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:25,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1705614859, now seen corresponding path program 1 times [2021-02-24 00:20:25,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:25,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207415975] [2021-02-24 00:20:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:25,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:25,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:25,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:25,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:25,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:25,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:25,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:25,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:25,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:25,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:25,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-24 00:20:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:25,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:25,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:25,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207415975] [2021-02-24 00:20:25,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:25,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:20:25,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520790082] [2021-02-24 00:20:25,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:20:25,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:25,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:20:25,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:20:25,740 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 10 states. [2021-02-24 00:20:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:26,356 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2021-02-24 00:20:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:20:26,356 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2021-02-24 00:20:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:26,358 INFO L225 Difference]: With dead ends: 101 [2021-02-24 00:20:26,359 INFO L226 Difference]: Without dead ends: 99 [2021-02-24 00:20:26,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:20:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-02-24 00:20:26,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2021-02-24 00:20:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-24 00:20:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2021-02-24 00:20:26,380 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 57 [2021-02-24 00:20:26,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:26,381 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2021-02-24 00:20:26,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:20:26,381 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2021-02-24 00:20:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-24 00:20:26,383 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:26,383 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:26,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:20:26,384 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:26,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1141287276, now seen corresponding path program 2 times [2021-02-24 00:20:26,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:26,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185519982] [2021-02-24 00:20:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:26,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:26,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:26,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:26,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:26,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:26,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:26,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:26,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:26,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:26,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:26,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:26,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:26,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:26,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:26,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:26,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-24 00:20:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:26,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:26,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:26,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-24 00:20:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:26,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:26,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-24 00:20:26,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185519982] [2021-02-24 00:20:26,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:26,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:20:26,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938252374] [2021-02-24 00:20:26,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:20:26,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:26,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:20:26,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:20:26,539 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 7 states. [2021-02-24 00:20:26,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:26,869 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-02-24 00:20:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:20:26,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2021-02-24 00:20:26,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:26,871 INFO L225 Difference]: With dead ends: 74 [2021-02-24 00:20:26,871 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:20:26,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:20:26,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:20:26,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:20:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:20:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:20:26,873 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2021-02-24 00:20:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:26,873 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:20:26,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:20:26,873 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:20:26,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:20:26,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:20:26,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:20:28,082 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 24 [2021-02-24 00:20:28,711 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 24 [2021-02-24 00:20:29,431 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2021-02-24 00:20:29,636 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 00:20:29,636 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 00:20:29,636 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 00:20:29,636 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 00:20:29,636 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 00:20:29,637 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:29,637 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:29,637 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 00:20:29,637 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:20:29,637 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 00:20:29,637 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 00:20:29,638 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-24 00:20:29,638 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 00:20:29,638 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:20:29,638 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:20:29,638 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:29,639 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:20:29,639 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:20:29,639 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 00:20:29,639 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 00:20:29,639 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:29,639 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:29,639 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:29,640 INFO L185 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (= |main_#t~post4| 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,640 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,640 INFO L192 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: true [2021-02-24 00:20:29,640 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2021-02-24 00:20:29,640 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 52) the Hoare annotation is: true [2021-02-24 00:20:29,641 INFO L185 CegarLoopUtils]: At program point L48(line 48) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (= |main_#t~post6| 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,641 INFO L185 CegarLoopUtils]: At program point L48-1(line 48) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (= |main_#t~post6| 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,641 INFO L185 CegarLoopUtils]: At program point L40(lines 40 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,642 INFO L185 CegarLoopUtils]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 10000 main_~c3~0))) (or (and .cse0 (= main_~k~0 0) (= main_~i~0 0) .cse1 .cse2) (and .cse0 (<= 1 main_~i~0) (<= 2000 main_~k~0) .cse1 (<= main_~n~0 1) .cse2))) [2021-02-24 00:20:29,642 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,642 INFO L185 CegarLoopUtils]: At program point L36-1(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,642 INFO L185 CegarLoopUtils]: At program point L36-2(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,643 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,643 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,643 INFO L185 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,643 INFO L192 CegarLoopUtils]: At program point L24(lines 24 52) the Hoare annotation is: true [2021-02-24 00:20:29,643 INFO L185 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,644 INFO L185 CegarLoopUtils]: At program point L49-1(line 49) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 |main_#t~post7|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,644 INFO L185 CegarLoopUtils]: At program point L49-2(line 49) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= main_~n~0 main_~j~0) (<= 1 main_~i~0) (<= 1999 main_~k~0) (<= 2000 |main_#t~post7|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,644 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,644 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,644 INFO L192 CegarLoopUtils]: At program point L37-1(line 37) the Hoare annotation is: true [2021-02-24 00:20:29,645 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,645 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,645 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,645 INFO L185 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,645 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-24 00:20:29,645 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 52) the Hoare annotation is: true [2021-02-24 00:20:29,646 INFO L185 CegarLoopUtils]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse2 (<= 1 main_~i~0)) (.cse4 (<= main_~n~0 1)) (.cse3 (<= 2000 main_~c2~0)) (.cse5 (<= 10000 main_~c3~0)) (.cse1 (= main_~j~0 0))) (or (and .cse0 .cse1 (<= 2000 main_~k~0) .cse2 .cse3 .cse4 .cse5) (and (<= main_~n~0 main_~j~0) .cse0 .cse2 (<= 1999 main_~k~0) .cse4 .cse3 .cse5) (and (<= main_~n~0 0) (= main_~i~0 0) .cse1))) [2021-02-24 00:20:29,646 INFO L192 CegarLoopUtils]: At program point L46-3(lines 46 50) the Hoare annotation is: true [2021-02-24 00:20:29,646 INFO L185 CegarLoopUtils]: At program point L38(lines 38 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,646 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 44) the Hoare annotation is: (or (and (<= main_~n~0 0) (= main_~i~0 0)) (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0))) [2021-02-24 00:20:29,646 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,647 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 52) the Hoare annotation is: true [2021-02-24 00:20:29,647 INFO L185 CegarLoopUtils]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,647 INFO L185 CegarLoopUtils]: At program point L30-2(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,647 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (<= 4000 main_~c1~0) [2021-02-24 00:20:29,647 INFO L185 CegarLoopUtils]: At program point L47(line 47) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,648 INFO L185 CegarLoopUtils]: At program point L47-1(line 47) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,648 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,648 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,648 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (= main_~i~0 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,648 INFO L185 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (= main_~i~0 0) (= |main_#t~post4| 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-24 00:20:29,649 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:20:29,649 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 00:20:29,649 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:20:29,649 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:29,649 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:29,650 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:20:29,650 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:29,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:20:29 BoogieIcfgContainer [2021-02-24 00:20:29,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:20:29,681 INFO L168 Benchmark]: Toolchain (without parser) took 11975.77 ms. Allocated memory was 153.1 MB in the beginning and 289.4 MB in the end (delta: 136.3 MB). Free memory was 128.8 MB in the beginning and 265.0 MB in the end (delta: -136.2 MB). Peak memory consumption was 164.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:29,682 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 153.1 MB. Free memory was 126.0 MB in the beginning and 125.9 MB in the end (delta: 101.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:20:29,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.49 ms. Allocated memory is still 153.1 MB. Free memory was 127.7 MB in the beginning and 118.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:29,683 INFO L168 Benchmark]: Boogie Preprocessor took 78.98 ms. Allocated memory is still 153.1 MB. Free memory was 118.0 MB in the beginning and 116.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:29,684 INFO L168 Benchmark]: RCFGBuilder took 775.02 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 131.9 MB in the end (delta: -15.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:29,684 INFO L168 Benchmark]: TraceAbstraction took 10643.66 ms. Allocated memory was 153.1 MB in the beginning and 289.4 MB in the end (delta: 136.3 MB). Free memory was 131.3 MB in the beginning and 265.0 MB in the end (delta: -133.6 MB). Peak memory consumption was 166.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:29,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 153.1 MB. Free memory was 126.0 MB in the beginning and 125.9 MB in the end (delta: 101.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 453.49 ms. Allocated memory is still 153.1 MB. Free memory was 127.7 MB in the beginning and 118.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.98 ms. Allocated memory is still 153.1 MB. Free memory was 118.0 MB in the beginning and 116.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 775.02 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 131.9 MB in the end (delta: -15.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10643.66 ms. Allocated memory was 153.1 MB in the beginning and 289.4 MB in the end (delta: 136.3 MB). Free memory was 131.3 MB in the beginning and 265.0 MB in the end (delta: -133.6 MB). Peak memory consumption was 166.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((4000 <= c1 && k == 0) && i == 0) && 2000 <= c2) && 10000 <= c3) || (((((4000 <= c1 && 1 <= i) && 2000 <= k) && 2000 <= c2) && n <= 1) && 10000 <= c3) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((4000 <= c1 && j == 0) && 2000 <= k) && 1 <= i) && 2000 <= c2) && n <= 1) && 10000 <= c3) || ((((((n <= j && 4000 <= c1) && 1 <= i) && 1999 <= k) && n <= 1) && 2000 <= c2) && 10000 <= c3)) || ((n <= 0 && i == 0) && j == 0) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 624 SDtfs, 981 SDslu, 459 SDs, 0 SdLazy, 2059 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 125 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 63 LocationsWithAnnotation, 112 PreInvPairs, 145 NumberOfFragments, 699 HoareAnnotationTreeSize, 112 FomulaSimplifications, 22904 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 63 FomulaSimplificationsInter, 2427 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 495 NumberOfCodeBlocks, 495 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 485 ConstructedInterpolants, 0 QuantifiedInterpolants, 74837 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 36/50 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...