/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 11:41:31,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 11:41:31,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 11:41:31,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 11:41:31,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-18 11:41:31,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 11:41:31,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 11:41:31,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 11:41:31,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 11:41:31,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 11:41:31,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 11:41:31,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 11:41:31,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 11:41:31,594 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 11:41:31,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 11:41:31,595 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 11:41:31,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 11:41:31,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 11:41:31,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 11:41:31,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 11:41:31,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 11:41:31,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 11:41:31,597 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 11:41:31,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 11:41:31,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 11:41:31,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 11:41:31,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 11:41:31,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 11:41:31,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 11:41:31,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 11:41:31,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 11:41:31,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 11:41:31,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 11:41:31,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 11:41:31,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 11:41:31,598 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 11:41:31,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 11:41:31,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 11:41:31,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 11:41:31,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 11:41:31,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 11:41:31,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 11:41:31,803 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 11:41:31,804 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 11:41:31,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2022-03-18 11:41:31,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a3828b2/57bb115678224e008441bca3cd31cc2f/FLAGbb00d59a4 [2022-03-18 11:41:32,198 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 11:41:32,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i [2022-03-18 11:41:32,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a3828b2/57bb115678224e008441bca3cd31cc2f/FLAGbb00d59a4 [2022-03-18 11:41:32,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a3828b2/57bb115678224e008441bca3cd31cc2f [2022-03-18 11:41:32,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 11:41:32,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 11:41:32,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 11:41:32,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 11:41:32,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 11:41:32,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 11:41:32" (1/1) ... [2022-03-18 11:41:32,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454990f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32, skipping insertion in model container [2022-03-18 11:41:32,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 11:41:32" (1/1) ... [2022-03-18 11:41:32,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 11:41:32,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 11:41:32,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i[807,820] [2022-03-18 11:41:32,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 11:41:32,396 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 11:41:32,403 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i[807,820] [2022-03-18 11:41:32,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 11:41:32,413 INFO L208 MainTranslator]: Completed translation [2022-03-18 11:41:32,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32 WrapperNode [2022-03-18 11:41:32,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 11:41:32,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 11:41:32,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 11:41:32,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 11:41:32,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32" (1/1) ... [2022-03-18 11:41:32,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32" (1/1) ... [2022-03-18 11:41:32,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32" (1/1) ... [2022-03-18 11:41:32,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32" (1/1) ... [2022-03-18 11:41:32,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32" (1/1) ... [2022-03-18 11:41:32,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32" (1/1) ... [2022-03-18 11:41:32,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32" (1/1) ... [2022-03-18 11:41:32,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 11:41:32,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 11:41:32,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 11:41:32,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 11:41:32,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32" (1/1) ... [2022-03-18 11:41:32,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 11:41:32,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 11:41:32,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 11:41:32,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 11:41:32,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 11:41:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 11:41:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 11:41:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 11:41:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 11:41:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 11:41:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 11:41:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 11:41:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 11:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 11:41:32,554 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 11:41:32,555 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 11:41:32,681 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 11:41:32,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 11:41:32,685 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 11:41:32,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 11:41:32 BoogieIcfgContainer [2022-03-18 11:41:32,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 11:41:32,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 11:41:32,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 11:41:32,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 11:41:32,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 11:41:32" (1/3) ... [2022-03-18 11:41:32,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d62a099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 11:41:32, skipping insertion in model container [2022-03-18 11:41:32,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:41:32" (2/3) ... [2022-03-18 11:41:32,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d62a099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 11:41:32, skipping insertion in model container [2022-03-18 11:41:32,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 11:41:32" (3/3) ... [2022-03-18 11:41:32,702 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2022-03-18 11:41:32,705 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 11:41:32,705 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 11:41:32,750 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 11:41:32,756 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 11:41:32,757 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 11:41:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 11:41:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-18 11:41:32,777 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 11:41:32,778 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 11:41:32,779 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 11:41:32,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 11:41:32,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1946695220, now seen corresponding path program 1 times [2022-03-18 11:41:32,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 11:41:32,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159747841] [2022-03-18 11:41:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 11:41:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 11:41:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 11:41:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 11:41:33,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 11:41:33,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159747841] [2022-03-18 11:41:33,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159747841] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 11:41:33,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 11:41:33,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 11:41:33,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827803766] [2022-03-18 11:41:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 11:41:33,147 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 11:41:33,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 11:41:33,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 11:41:33,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-18 11:41:33,168 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 11:41:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 11:41:33,310 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2022-03-18 11:41:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 11:41:33,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-18 11:41:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 11:41:33,316 INFO L225 Difference]: With dead ends: 41 [2022-03-18 11:41:33,316 INFO L226 Difference]: Without dead ends: 27 [2022-03-18 11:41:33,318 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-03-18 11:41:33,320 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 11:41:33,321 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 33 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 11:41:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-18 11:41:33,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-03-18 11:41:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 11:41:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-03-18 11:41:33,344 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 13 [2022-03-18 11:41:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 11:41:33,345 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-03-18 11:41:33,345 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 11:41:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-03-18 11:41:33,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-18 11:41:33,345 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 11:41:33,346 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 11:41:33,346 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 11:41:33,346 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 11:41:33,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 11:41:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1052577873, now seen corresponding path program 1 times [2022-03-18 11:41:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 11:41:33,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216034927] [2022-03-18 11:41:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 11:41:33,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 11:41:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:33,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 11:41:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 11:41:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 11:41:33,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 11:41:33,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216034927] [2022-03-18 11:41:33,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216034927] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 11:41:33,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708719376] [2022-03-18 11:41:33,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 11:41:33,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 11:41:33,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 11:41:33,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 11:41:33,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 11:41:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:33,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-18 11:41:33,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 11:41:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 11:41:33,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 11:41:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 11:41:34,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708719376] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 11:41:34,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 11:41:34,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2022-03-18 11:41:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535283521] [2022-03-18 11:41:34,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 11:41:34,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 11:41:34,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 11:41:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 11:41:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-18 11:41:34,355 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 11:41:34,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 11:41:34,639 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-03-18 11:41:34,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 11:41:34,639 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2022-03-18 11:41:34,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 11:41:34,641 INFO L225 Difference]: With dead ends: 49 [2022-03-18 11:41:34,641 INFO L226 Difference]: Without dead ends: 39 [2022-03-18 11:41:34,641 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-03-18 11:41:34,642 INFO L912 BasicCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 11:41:34,643 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 71 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 11:41:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-18 11:41:34,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-03-18 11:41:34,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 11:41:34,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-03-18 11:41:34,651 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 21 [2022-03-18 11:41:34,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 11:41:34,651 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-03-18 11:41:34,651 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 11:41:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-03-18 11:41:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-18 11:41:34,653 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 11:41:34,653 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 11:41:34,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 11:41:34,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 11:41:34,868 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 11:41:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 11:41:34,868 INFO L85 PathProgramCache]: Analyzing trace with hash -668913975, now seen corresponding path program 1 times [2022-03-18 11:41:34,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 11:41:34,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340651826] [2022-03-18 11:41:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 11:41:34,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 11:41:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 11:41:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 11:41:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 11:41:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 11:41:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 11:41:34,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 11:41:34,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340651826] [2022-03-18 11:41:34,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340651826] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 11:41:34,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663974874] [2022-03-18 11:41:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 11:41:34,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 11:41:34,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 11:41:34,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 11:41:34,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 11:41:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 11:41:35,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 11:41:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 11:41:35,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 11:41:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 11:41:35,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663974874] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 11:41:35,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 11:41:35,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-03-18 11:41:35,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991190687] [2022-03-18 11:41:35,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 11:41:35,186 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 11:41:35,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 11:41:35,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 11:41:35,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-18 11:41:35,187 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 11:41:35,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 11:41:35,453 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2022-03-18 11:41:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 11:41:35,454 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 37 [2022-03-18 11:41:35,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 11:41:35,455 INFO L225 Difference]: With dead ends: 69 [2022-03-18 11:41:35,455 INFO L226 Difference]: Without dead ends: 59 [2022-03-18 11:41:35,455 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2022-03-18 11:41:35,456 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 11:41:35,456 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 41 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 11:41:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-18 11:41:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-03-18 11:41:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 11:41:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2022-03-18 11:41:35,466 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 37 [2022-03-18 11:41:35,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 11:41:35,466 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2022-03-18 11:41:35,466 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 11:41:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2022-03-18 11:41:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-18 11:41:35,468 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 11:41:35,468 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 11:41:35,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 11:41:35,686 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 11:41:35,686 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 11:41:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 11:41:35,687 INFO L85 PathProgramCache]: Analyzing trace with hash -802632614, now seen corresponding path program 2 times [2022-03-18 11:41:35,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 11:41:35,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620465047] [2022-03-18 11:41:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 11:41:35,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 11:41:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 11:41:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 11:41:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 11:41:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 11:41:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 11:41:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 11:41:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 11:41:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 11:41:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 11:41:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 11:41:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 11:41:35,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 11:41:35,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620465047] [2022-03-18 11:41:35,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620465047] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 11:41:35,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041281813] [2022-03-18 11:41:35,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 11:41:35,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 11:41:35,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 11:41:35,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 11:41:35,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 11:41:35,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 11:41:35,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 11:41:35,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-18 11:41:35,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 11:41:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 11:41:36,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 11:41:36,411 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 11:41:36,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041281813] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 11:41:36,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 11:41:36,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2022-03-18 11:41:36,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973425290] [2022-03-18 11:41:36,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 11:41:36,412 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-18 11:41:36,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 11:41:36,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-18 11:41:36,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-03-18 11:41:36,413 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 11:41:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 11:41:36,773 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2022-03-18 11:41:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 11:41:36,774 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 77 [2022-03-18 11:41:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 11:41:36,775 INFO L225 Difference]: With dead ends: 77 [2022-03-18 11:41:36,775 INFO L226 Difference]: Without dead ends: 67 [2022-03-18 11:41:36,775 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2022-03-18 11:41:36,776 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 41 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 11:41:36,776 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 81 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 11:41:36,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-18 11:41:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2022-03-18 11:41:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 11:41:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2022-03-18 11:41:36,786 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 77 [2022-03-18 11:41:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 11:41:36,786 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2022-03-18 11:41:36,786 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 11:41:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2022-03-18 11:41:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-18 11:41:36,788 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 11:41:36,788 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 11:41:36,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 11:41:37,004 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 11:41:37,005 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 11:41:37,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 11:41:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1149090924, now seen corresponding path program 3 times [2022-03-18 11:41:37,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 11:41:37,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574152616] [2022-03-18 11:41:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 11:41:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 11:41:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 11:41:37,087 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 11:41:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 11:41:37,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 11:41:37,146 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 11:41:37,147 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 11:41:37,148 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 11:41:37,150 INFO L718 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-03-18 11:41:37,151 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 11:41:37,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 11:41:37 BoogieIcfgContainer [2022-03-18 11:41:37,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 11:41:37,174 INFO L158 Benchmark]: Toolchain (without parser) took 4956.16ms. Allocated memory was 177.2MB in the beginning and 248.5MB in the end (delta: 71.3MB). Free memory was 125.9MB in the beginning and 154.1MB in the end (delta: -28.2MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2022-03-18 11:41:37,174 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 11:41:37,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.50ms. Allocated memory was 177.2MB in the beginning and 248.5MB in the end (delta: 71.3MB). Free memory was 125.7MB in the beginning and 224.9MB in the end (delta: -99.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-18 11:41:37,175 INFO L158 Benchmark]: Boogie Preprocessor took 17.35ms. Allocated memory is still 248.5MB. Free memory was 224.9MB in the beginning and 223.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 11:41:37,175 INFO L158 Benchmark]: RCFGBuilder took 254.16ms. Allocated memory is still 248.5MB. Free memory was 223.3MB in the beginning and 212.8MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 11:41:37,175 INFO L158 Benchmark]: TraceAbstraction took 4486.74ms. Allocated memory is still 248.5MB. Free memory was 212.8MB in the beginning and 154.1MB in the end (delta: 58.7MB). Peak memory consumption was 60.2MB. Max. memory is 8.0GB. [2022-03-18 11:41:37,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.50ms. Allocated memory was 177.2MB in the beginning and 248.5MB in the end (delta: 71.3MB). Free memory was 125.7MB in the beginning and 224.9MB in the end (delta: -99.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.35ms. Allocated memory is still 248.5MB. Free memory was 224.9MB in the beginning and 223.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 254.16ms. Allocated memory is still 248.5MB. Free memory was 223.3MB in the beginning and 212.8MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4486.74ms. Allocated memory is still 248.5MB. Free memory was 212.8MB in the beginning and 154.1MB in the end (delta: 58.7MB). Peak memory consumption was 60.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int sn=0; [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L23] unsigned int x=0; VAL [loop1=50, n1=51, sn=0, x=0] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=0, x=0] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=2, x=0] [L28] x++ VAL [loop1=50, n1=51, sn=2, x=1] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=2, x=1] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=2, x=1] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=4, x=1] [L28] x++ VAL [loop1=50, n1=51, sn=4, x=2] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=4, x=2] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=4, x=2] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=6, x=2] [L28] x++ VAL [loop1=50, n1=51, sn=6, x=3] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=6, x=3] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=6, x=3] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=8, x=3] [L28] x++ VAL [loop1=50, n1=51, sn=8, x=4] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=8, x=4] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=8, x=4] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=10, x=4] [L28] x++ VAL [loop1=50, n1=51, sn=10, x=5] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=10, x=5] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=10, x=5] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=12, x=5] [L28] x++ VAL [loop1=50, n1=51, sn=12, x=6] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=12, x=6] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=12, x=6] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=14, x=6] [L28] x++ VAL [loop1=50, n1=51, sn=14, x=7] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=14, x=7] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=14, x=7] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=16, x=7] [L28] x++ VAL [loop1=50, n1=51, sn=16, x=8] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=16, x=8] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=16, x=8] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=18, x=8] [L28] x++ VAL [loop1=50, n1=51, sn=18, x=9] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=18, x=9] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=18, x=9] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=20, x=9] [L28] x++ VAL [loop1=50, n1=51, sn=20, x=10] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=20, x=10] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=20, x=10] [L25] COND FALSE !(x<10) VAL [loop1=50, n1=51, sn=20, x=10] [L28] x++ VAL [loop1=50, n1=51, sn=20, x=11] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=0] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L15] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 137 mSDsluCounter, 226 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 153 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 931 IncrementalHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 73 mSDtfsCounter, 931 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 368 GetRequests, 274 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=4, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 1670 SizeOfPredicates, 6 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 510/960 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 incorrect! [2022-03-18 11:41:37,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...