/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/locks/test_locks_11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 08:37:17,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 08:37:17,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 08:37:17,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 08:37:17,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 08:37:17,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 08:37:17,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 08:37:17,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 08:37:17,145 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 08:37:17,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 08:37:17,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 08:37:17,147 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 08:37:17,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 08:37:17,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 08:37:17,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 08:37:17,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 08:37:17,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 08:37:17,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 08:37:17,147 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 08:37:17,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 08:37:17,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 08:37:17,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 08:37:17,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 08:37:17,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 08:37:17,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 08:37:17,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 08:37:17,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 08:37:17,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 08:37:17,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 08:37:17,149 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 08:37:17,149 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 08:37:17,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 08:37:17,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 08:37:17,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 08:37:17,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 08:37:17,346 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 08:37:17,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_11.c [2022-04-06 08:37:17,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2027bdac/f870c2c027d14283adbcad1dd3663a42/FLAG07a264b8c [2022-04-06 08:37:17,783 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 08:37:17,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_11.c [2022-04-06 08:37:17,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2027bdac/f870c2c027d14283adbcad1dd3663a42/FLAG07a264b8c [2022-04-06 08:37:17,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2027bdac/f870c2c027d14283adbcad1dd3663a42 [2022-04-06 08:37:17,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 08:37:17,806 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 08:37:17,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 08:37:17,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 08:37:17,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 08:37:17,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 08:37:17" (1/1) ... [2022-04-06 08:37:17,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468763f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:17, skipping insertion in model container [2022-04-06 08:37:17,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 08:37:17" (1/1) ... [2022-04-06 08:37:17,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 08:37:17,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 08:37:18,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_11.c[4246,4259] [2022-04-06 08:37:18,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 08:37:18,069 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 08:37:18,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_11.c[4246,4259] [2022-04-06 08:37:18,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 08:37:18,116 INFO L208 MainTranslator]: Completed translation [2022-04-06 08:37:18,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:18 WrapperNode [2022-04-06 08:37:18,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 08:37:18,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 08:37:18,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 08:37:18,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 08:37:18,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:18" (1/1) ... [2022-04-06 08:37:18,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:18" (1/1) ... [2022-04-06 08:37:18,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:18" (1/1) ... [2022-04-06 08:37:18,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:18" (1/1) ... [2022-04-06 08:37:18,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:18" (1/1) ... [2022-04-06 08:37:18,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:18" (1/1) ... [2022-04-06 08:37:18,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:18" (1/1) ... [2022-04-06 08:37:18,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 08:37:18,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 08:37:18,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 08:37:18,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 08:37:18,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:18" (1/1) ... [2022-04-06 08:37:18,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 08:37:18,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:37:18,192 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) [2022-04-06 08:37:18,196 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 [2022-04-06 08:37:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 08:37:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 08:37:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 08:37:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 08:37:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 08:37:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 08:37:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 08:37:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 08:37:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 08:37:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 08:37:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 08:37:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 08:37:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 08:37:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 08:37:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 08:37:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 08:37:18,289 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 08:37:18,290 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 08:37:18,428 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 08:37:18,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 08:37:18,434 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 08:37:18,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:37:18 BoogieIcfgContainer [2022-04-06 08:37:18,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 08:37:18,436 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 08:37:18,436 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 08:37:18,437 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 08:37:18,439 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:37:18" (1/1) ... [2022-04-06 08:37:18,441 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 08:37:18,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 08:37:18 BasicIcfg [2022-04-06 08:37:18,458 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 08:37:18,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 08:37:18,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 08:37:18,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 08:37:18,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 08:37:17" (1/4) ... [2022-04-06 08:37:18,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f6be3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 08:37:18, skipping insertion in model container [2022-04-06 08:37:18,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:37:18" (2/4) ... [2022-04-06 08:37:18,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f6be3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 08:37:18, skipping insertion in model container [2022-04-06 08:37:18,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:37:18" (3/4) ... [2022-04-06 08:37:18,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f6be3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:37:18, skipping insertion in model container [2022-04-06 08:37:18,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 08:37:18" (4/4) ... [2022-04-06 08:37:18,464 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.cJordan [2022-04-06 08:37:18,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 08:37:18,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 08:37:18,499 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 08:37:18,504 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-04-06 08:37:18,505 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 08:37:18,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 42 states have (on average 1.880952380952381) internal successors, (79), 43 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 08:37:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-06 08:37:18,522 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:18,523 INFO L499 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] [2022-04-06 08:37:18,523 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:18,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1766201146, now seen corresponding path program 1 times [2022-04-06 08:37:18,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:18,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191029385] [2022-04-06 08:37:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:18,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:18,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:18,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191029385] [2022-04-06 08:37:18,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191029385] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:18,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:18,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:18,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145007596] [2022-04-06 08:37:18,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:18,850 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:18,871 INFO L87 Difference]: Start difference. First operand has 48 states, 42 states have (on average 1.880952380952381) internal successors, (79), 43 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:19,040 INFO L93 Difference]: Finished difference Result 87 states and 150 transitions. [2022-04-06 08:37:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:19,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-06 08:37:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:19,051 INFO L225 Difference]: With dead ends: 87 [2022-04-06 08:37:19,052 INFO L226 Difference]: Without dead ends: 79 [2022-04-06 08:37:19,054 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:19,062 INFO L913 BasicCegarLoop]: 86 mSDtfsCounter, 191 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:19,064 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 95 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:19,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-04-06 08:37:19,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2022-04-06 08:37:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.8627450980392157) internal successors, (95), 51 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2022-04-06 08:37:19,107 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 22 [2022-04-06 08:37:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:19,107 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2022-04-06 08:37:19,108 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,108 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2022-04-06 08:37:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-06 08:37:19,110 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:19,110 INFO L499 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] [2022-04-06 08:37:19,110 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 08:37:19,110 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2023207525, now seen corresponding path program 1 times [2022-04-06 08:37:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:19,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72469859] [2022-04-06 08:37:19,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:19,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:19,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:19,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72469859] [2022-04-06 08:37:19,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72469859] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:19,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:19,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:19,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825306931] [2022-04-06 08:37:19,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:19,234 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:19,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:19,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:19,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:19,236 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:19,369 INFO L93 Difference]: Finished difference Result 79 states and 139 transitions. [2022-04-06 08:37:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:19,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-06 08:37:19,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:19,371 INFO L225 Difference]: With dead ends: 79 [2022-04-06 08:37:19,371 INFO L226 Difference]: Without dead ends: 79 [2022-04-06 08:37:19,371 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:19,372 INFO L913 BasicCegarLoop]: 96 mSDtfsCounter, 163 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:19,373 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 103 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:19,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-04-06 08:37:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2022-04-06 08:37:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.8493150684931507) internal successors, (135), 73 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 138 transitions. [2022-04-06 08:37:19,384 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 138 transitions. Word has length 22 [2022-04-06 08:37:19,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:19,384 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 138 transitions. [2022-04-06 08:37:19,384 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 138 transitions. [2022-04-06 08:37:19,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-06 08:37:19,385 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:19,385 INFO L499 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] [2022-04-06 08:37:19,387 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 08:37:19,388 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:19,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:19,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1082371358, now seen corresponding path program 1 times [2022-04-06 08:37:19,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:19,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844604975] [2022-04-06 08:37:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:19,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:19,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:19,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844604975] [2022-04-06 08:37:19,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844604975] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:19,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:19,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402655598] [2022-04-06 08:37:19,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:19,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:19,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:19,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:19,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:19,457 INFO L87 Difference]: Start difference. First operand 77 states and 138 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:19,553 INFO L93 Difference]: Finished difference Result 82 states and 141 transitions. [2022-04-06 08:37:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:19,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-06 08:37:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:19,554 INFO L225 Difference]: With dead ends: 82 [2022-04-06 08:37:19,555 INFO L226 Difference]: Without dead ends: 82 [2022-04-06 08:37:19,555 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:19,556 INFO L913 BasicCegarLoop]: 116 mSDtfsCounter, 144 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:19,556 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 123 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-04-06 08:37:19,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2022-04-06 08:37:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.8026315789473684) internal successors, (137), 76 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 140 transitions. [2022-04-06 08:37:19,562 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 140 transitions. Word has length 23 [2022-04-06 08:37:19,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:19,562 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 140 transitions. [2022-04-06 08:37:19,562 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 140 transitions. [2022-04-06 08:37:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-06 08:37:19,564 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:19,564 INFO L499 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] [2022-04-06 08:37:19,564 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 08:37:19,564 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:19,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1705044129, now seen corresponding path program 1 times [2022-04-06 08:37:19,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:19,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178898681] [2022-04-06 08:37:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:19,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:19,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:19,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178898681] [2022-04-06 08:37:19,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178898681] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:19,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:19,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:19,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997236859] [2022-04-06 08:37:19,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:19,617 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:19,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:19,618 INFO L87 Difference]: Start difference. First operand 80 states and 140 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:19,698 INFO L93 Difference]: Finished difference Result 147 states and 262 transitions. [2022-04-06 08:37:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-06 08:37:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:19,700 INFO L225 Difference]: With dead ends: 147 [2022-04-06 08:37:19,700 INFO L226 Difference]: Without dead ends: 147 [2022-04-06 08:37:19,700 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:19,701 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 178 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:19,702 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 83 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:19,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-04-06 08:37:19,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 105. [2022-04-06 08:37:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.801980198019802) internal successors, (182), 101 states have internal predecessors, (182), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 185 transitions. [2022-04-06 08:37:19,708 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 185 transitions. Word has length 23 [2022-04-06 08:37:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:19,709 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 185 transitions. [2022-04-06 08:37:19,709 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 185 transitions. [2022-04-06 08:37:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-06 08:37:19,710 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:19,710 INFO L499 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] [2022-04-06 08:37:19,710 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 08:37:19,710 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2084364542, now seen corresponding path program 1 times [2022-04-06 08:37:19,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:19,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122324895] [2022-04-06 08:37:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:19,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:19,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:19,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122324895] [2022-04-06 08:37:19,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122324895] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:19,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:19,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:19,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963796689] [2022-04-06 08:37:19,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:19,747 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:19,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:19,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:19,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:19,747 INFO L87 Difference]: Start difference. First operand 105 states and 185 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:19,818 INFO L93 Difference]: Finished difference Result 149 states and 260 transitions. [2022-04-06 08:37:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:19,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-06 08:37:19,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:19,820 INFO L225 Difference]: With dead ends: 149 [2022-04-06 08:37:19,820 INFO L226 Difference]: Without dead ends: 149 [2022-04-06 08:37:19,820 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:19,821 INFO L913 BasicCegarLoop]: 98 mSDtfsCounter, 157 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:19,822 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 105 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:19,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-04-06 08:37:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2022-04-06 08:37:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 143 states have (on average 1.7902097902097902) internal successors, (256), 143 states have internal predecessors, (256), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 259 transitions. [2022-04-06 08:37:19,827 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 259 transitions. Word has length 23 [2022-04-06 08:37:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:19,828 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 259 transitions. [2022-04-06 08:37:19,828 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 259 transitions. [2022-04-06 08:37:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-06 08:37:19,829 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:19,829 INFO L499 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] [2022-04-06 08:37:19,829 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 08:37:19,829 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:19,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:19,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1316728287, now seen corresponding path program 1 times [2022-04-06 08:37:19,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:19,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453845050] [2022-04-06 08:37:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:19,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:19,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:19,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453845050] [2022-04-06 08:37:19,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453845050] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:19,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:19,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:19,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539860251] [2022-04-06 08:37:19,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:19,886 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:19,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:19,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:19,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:19,886 INFO L87 Difference]: Start difference. First operand 147 states and 259 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:19,964 INFO L93 Difference]: Finished difference Result 151 states and 260 transitions. [2022-04-06 08:37:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:19,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-04-06 08:37:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:19,966 INFO L225 Difference]: With dead ends: 151 [2022-04-06 08:37:19,966 INFO L226 Difference]: Without dead ends: 151 [2022-04-06 08:37:19,966 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:19,970 INFO L913 BasicCegarLoop]: 113 mSDtfsCounter, 143 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:19,972 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 120 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-04-06 08:37:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2022-04-06 08:37:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 145 states have (on average 1.7655172413793103) internal successors, (256), 145 states have internal predecessors, (256), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 259 transitions. [2022-04-06 08:37:19,988 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 259 transitions. Word has length 24 [2022-04-06 08:37:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:19,989 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 259 transitions. [2022-04-06 08:37:19,989 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:19,989 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 259 transitions. [2022-04-06 08:37:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-06 08:37:19,992 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:19,992 INFO L499 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] [2022-04-06 08:37:19,993 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 08:37:19,993 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:19,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:19,993 INFO L85 PathProgramCache]: Analyzing trace with hash 190823522, now seen corresponding path program 1 times [2022-04-06 08:37:19,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:19,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875173767] [2022-04-06 08:37:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:19,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:20,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:20,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875173767] [2022-04-06 08:37:20,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875173767] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:20,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:20,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:20,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903650492] [2022-04-06 08:37:20,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:20,058 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:20,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:20,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:20,059 INFO L87 Difference]: Start difference. First operand 149 states and 259 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:20,128 INFO L93 Difference]: Finished difference Result 275 states and 484 transitions. [2022-04-06 08:37:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:20,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-04-06 08:37:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:20,131 INFO L225 Difference]: With dead ends: 275 [2022-04-06 08:37:20,131 INFO L226 Difference]: Without dead ends: 275 [2022-04-06 08:37:20,131 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:20,132 INFO L913 BasicCegarLoop]: 75 mSDtfsCounter, 171 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:20,132 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 82 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-04-06 08:37:20,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 201. [2022-04-06 08:37:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 197 states have (on average 1.7461928934010151) internal successors, (344), 197 states have internal predecessors, (344), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 347 transitions. [2022-04-06 08:37:20,141 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 347 transitions. Word has length 24 [2022-04-06 08:37:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:20,142 INFO L478 AbstractCegarLoop]: Abstraction has 201 states and 347 transitions. [2022-04-06 08:37:20,142 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 347 transitions. [2022-04-06 08:37:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-06 08:37:20,146 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:20,147 INFO L499 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] [2022-04-06 08:37:20,147 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 08:37:20,147 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash -314735103, now seen corresponding path program 1 times [2022-04-06 08:37:20,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:20,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979140362] [2022-04-06 08:37:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:20,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:20,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:20,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979140362] [2022-04-06 08:37:20,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979140362] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:20,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:20,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:20,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161523773] [2022-04-06 08:37:20,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:20,200 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:20,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:20,201 INFO L87 Difference]: Start difference. First operand 201 states and 347 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:20,276 INFO L93 Difference]: Finished difference Result 283 states and 484 transitions. [2022-04-06 08:37:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:20,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-04-06 08:37:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:20,281 INFO L225 Difference]: With dead ends: 283 [2022-04-06 08:37:20,281 INFO L226 Difference]: Without dead ends: 283 [2022-04-06 08:37:20,282 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:20,283 INFO L913 BasicCegarLoop]: 100 mSDtfsCounter, 151 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:20,283 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 107 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:20,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-04-06 08:37:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2022-04-06 08:37:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 277 states have (on average 1.7328519855595668) internal successors, (480), 277 states have internal predecessors, (480), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 483 transitions. [2022-04-06 08:37:20,291 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 483 transitions. Word has length 24 [2022-04-06 08:37:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:20,291 INFO L478 AbstractCegarLoop]: Abstraction has 281 states and 483 transitions. [2022-04-06 08:37:20,291 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 483 transitions. [2022-04-06 08:37:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-06 08:37:20,292 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:20,292 INFO L499 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] [2022-04-06 08:37:20,292 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 08:37:20,292 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:20,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1620594170, now seen corresponding path program 1 times [2022-04-06 08:37:20,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:20,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486525661] [2022-04-06 08:37:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:20,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:20,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:20,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486525661] [2022-04-06 08:37:20,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486525661] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:20,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:20,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:20,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523935662] [2022-04-06 08:37:20,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:20,336 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:20,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:20,337 INFO L87 Difference]: Start difference. First operand 281 states and 483 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:20,397 INFO L93 Difference]: Finished difference Result 287 states and 484 transitions. [2022-04-06 08:37:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:20,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-04-06 08:37:20,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:20,398 INFO L225 Difference]: With dead ends: 287 [2022-04-06 08:37:20,398 INFO L226 Difference]: Without dead ends: 287 [2022-04-06 08:37:20,398 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:20,400 INFO L913 BasicCegarLoop]: 110 mSDtfsCounter, 142 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:20,401 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 117 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:20,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-04-06 08:37:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2022-04-06 08:37:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 281 states have (on average 1.708185053380783) internal successors, (480), 281 states have internal predecessors, (480), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 483 transitions. [2022-04-06 08:37:20,407 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 483 transitions. Word has length 25 [2022-04-06 08:37:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:20,408 INFO L478 AbstractCegarLoop]: Abstraction has 285 states and 483 transitions. [2022-04-06 08:37:20,408 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,408 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 483 transitions. [2022-04-06 08:37:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-06 08:37:20,408 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:20,408 INFO L499 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] [2022-04-06 08:37:20,408 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 08:37:20,408 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:20,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:20,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1166821317, now seen corresponding path program 1 times [2022-04-06 08:37:20,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:20,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054701105] [2022-04-06 08:37:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:20,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:20,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:20,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054701105] [2022-04-06 08:37:20,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054701105] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:20,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:20,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:20,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770301789] [2022-04-06 08:37:20,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:20,451 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:20,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:20,452 INFO L87 Difference]: Start difference. First operand 285 states and 483 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:20,510 INFO L93 Difference]: Finished difference Result 547 states and 912 transitions. [2022-04-06 08:37:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:20,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-04-06 08:37:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:20,513 INFO L225 Difference]: With dead ends: 547 [2022-04-06 08:37:20,513 INFO L226 Difference]: Without dead ends: 547 [2022-04-06 08:37:20,514 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:20,514 INFO L913 BasicCegarLoop]: 80 mSDtfsCounter, 170 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:20,515 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 87 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-04-06 08:37:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2022-04-06 08:37:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 541 states have (on average 1.6783733826247689) internal successors, (908), 541 states have internal predecessors, (908), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 911 transitions. [2022-04-06 08:37:20,526 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 911 transitions. Word has length 25 [2022-04-06 08:37:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:20,526 INFO L478 AbstractCegarLoop]: Abstraction has 545 states and 911 transitions. [2022-04-06 08:37:20,526 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 911 transitions. [2022-04-06 08:37:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-06 08:37:20,527 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:20,527 INFO L499 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] [2022-04-06 08:37:20,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 08:37:20,527 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:20,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:20,528 INFO L85 PathProgramCache]: Analyzing trace with hash -661262692, now seen corresponding path program 1 times [2022-04-06 08:37:20,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:20,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836485455] [2022-04-06 08:37:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:20,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:20,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:20,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836485455] [2022-04-06 08:37:20,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836485455] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:20,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:20,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:20,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526802838] [2022-04-06 08:37:20,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:20,578 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:20,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:20,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:20,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:20,578 INFO L87 Difference]: Start difference. First operand 545 states and 911 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:20,635 INFO L93 Difference]: Finished difference Result 675 states and 1144 transitions. [2022-04-06 08:37:20,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:20,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-04-06 08:37:20,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:20,638 INFO L225 Difference]: With dead ends: 675 [2022-04-06 08:37:20,638 INFO L226 Difference]: Without dead ends: 675 [2022-04-06 08:37:20,639 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:20,639 INFO L913 BasicCegarLoop]: 125 mSDtfsCounter, 109 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:20,639 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 132 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:20,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-04-06 08:37:20,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 545. [2022-04-06 08:37:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 541 states have (on average 1.6635859519408502) internal successors, (900), 541 states have internal predecessors, (900), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 903 transitions. [2022-04-06 08:37:20,650 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 903 transitions. Word has length 25 [2022-04-06 08:37:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:20,650 INFO L478 AbstractCegarLoop]: Abstraction has 545 states and 903 transitions. [2022-04-06 08:37:20,650 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 903 transitions. [2022-04-06 08:37:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-06 08:37:20,651 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:20,652 INFO L499 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] [2022-04-06 08:37:20,652 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-06 08:37:20,652 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1811690051, now seen corresponding path program 1 times [2022-04-06 08:37:20,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:20,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176810668] [2022-04-06 08:37:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:20,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:20,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176810668] [2022-04-06 08:37:20,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176810668] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:20,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:20,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:20,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264672987] [2022-04-06 08:37:20,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:20,698 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:20,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:20,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:20,699 INFO L87 Difference]: Start difference. First operand 545 states and 903 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:20,757 INFO L93 Difference]: Finished difference Result 995 states and 1664 transitions. [2022-04-06 08:37:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:20,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-04-06 08:37:20,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:20,762 INFO L225 Difference]: With dead ends: 995 [2022-04-06 08:37:20,762 INFO L226 Difference]: Without dead ends: 995 [2022-04-06 08:37:20,762 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:20,762 INFO L913 BasicCegarLoop]: 73 mSDtfsCounter, 157 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:20,763 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 80 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2022-04-06 08:37:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 769. [2022-04-06 08:37:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 765 states have (on average 1.6261437908496732) internal successors, (1244), 765 states have internal predecessors, (1244), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1247 transitions. [2022-04-06 08:37:20,777 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1247 transitions. Word has length 26 [2022-04-06 08:37:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:20,777 INFO L478 AbstractCegarLoop]: Abstraction has 769 states and 1247 transitions. [2022-04-06 08:37:20,778 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1247 transitions. [2022-04-06 08:37:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-06 08:37:20,779 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:20,779 INFO L499 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] [2022-04-06 08:37:20,779 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-06 08:37:20,779 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:20,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:20,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1977718620, now seen corresponding path program 1 times [2022-04-06 08:37:20,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:20,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958090577] [2022-04-06 08:37:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:20,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:20,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:20,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958090577] [2022-04-06 08:37:20,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958090577] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:20,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:20,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:20,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457843307] [2022-04-06 08:37:20,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:20,815 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:20,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:20,816 INFO L87 Difference]: Start difference. First operand 769 states and 1247 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:20,875 INFO L93 Difference]: Finished difference Result 1059 states and 1704 transitions. [2022-04-06 08:37:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:20,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-04-06 08:37:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:20,879 INFO L225 Difference]: With dead ends: 1059 [2022-04-06 08:37:20,880 INFO L226 Difference]: Without dead ends: 1059 [2022-04-06 08:37:20,880 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:20,881 INFO L913 BasicCegarLoop]: 104 mSDtfsCounter, 139 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:20,881 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 111 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-04-06 08:37:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1057. [2022-04-06 08:37:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1053 states have (on average 1.6144349477682811) internal successors, (1700), 1053 states have internal predecessors, (1700), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1703 transitions. [2022-04-06 08:37:20,923 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1703 transitions. Word has length 26 [2022-04-06 08:37:20,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:20,924 INFO L478 AbstractCegarLoop]: Abstraction has 1057 states and 1703 transitions. [2022-04-06 08:37:20,924 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1703 transitions. [2022-04-06 08:37:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-06 08:37:20,925 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:20,925 INFO L499 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] [2022-04-06 08:37:20,925 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-06 08:37:20,925 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash -327784201, now seen corresponding path program 1 times [2022-04-06 08:37:20,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:20,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043094271] [2022-04-06 08:37:20,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:20,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043094271] [2022-04-06 08:37:20,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043094271] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:20,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:20,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:20,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858233276] [2022-04-06 08:37:20,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:20,956 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:20,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:20,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:20,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:20,957 INFO L87 Difference]: Start difference. First operand 1057 states and 1703 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:21,027 INFO L93 Difference]: Finished difference Result 1083 states and 1720 transitions. [2022-04-06 08:37:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:21,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-04-06 08:37:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:21,031 INFO L225 Difference]: With dead ends: 1083 [2022-04-06 08:37:21,031 INFO L226 Difference]: Without dead ends: 1083 [2022-04-06 08:37:21,031 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:21,032 INFO L913 BasicCegarLoop]: 104 mSDtfsCounter, 140 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:21,032 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 111 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-04-06 08:37:21,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1081. [2022-04-06 08:37:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1077 states have (on average 1.5933147632311977) internal successors, (1716), 1077 states have internal predecessors, (1716), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1719 transitions. [2022-04-06 08:37:21,051 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1719 transitions. Word has length 27 [2022-04-06 08:37:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:21,052 INFO L478 AbstractCegarLoop]: Abstraction has 1081 states and 1719 transitions. [2022-04-06 08:37:21,052 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1719 transitions. [2022-04-06 08:37:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-06 08:37:21,053 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:21,053 INFO L499 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] [2022-04-06 08:37:21,053 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-06 08:37:21,053 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:21,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1179767608, now seen corresponding path program 1 times [2022-04-06 08:37:21,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:21,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649389876] [2022-04-06 08:37:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:21,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:21,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649389876] [2022-04-06 08:37:21,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649389876] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:21,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:21,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:21,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878889085] [2022-04-06 08:37:21,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:21,093 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:21,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:21,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:21,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:21,093 INFO L87 Difference]: Start difference. First operand 1081 states and 1719 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:21,156 INFO L93 Difference]: Finished difference Result 1931 states and 3096 transitions. [2022-04-06 08:37:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-04-06 08:37:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:21,162 INFO L225 Difference]: With dead ends: 1931 [2022-04-06 08:37:21,162 INFO L226 Difference]: Without dead ends: 1931 [2022-04-06 08:37:21,163 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:21,164 INFO L913 BasicCegarLoop]: 72 mSDtfsCounter, 150 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:21,164 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 79 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:21,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2022-04-06 08:37:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1545. [2022-04-06 08:37:21,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1541 states have (on average 1.5496430889033095) internal successors, (2388), 1541 states have internal predecessors, (2388), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2391 transitions. [2022-04-06 08:37:21,199 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2391 transitions. Word has length 27 [2022-04-06 08:37:21,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:21,199 INFO L478 AbstractCegarLoop]: Abstraction has 1545 states and 2391 transitions. [2022-04-06 08:37:21,199 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2391 transitions. [2022-04-06 08:37:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-06 08:37:21,201 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:21,201 INFO L499 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] [2022-04-06 08:37:21,201 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-06 08:37:21,201 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:21,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:21,202 INFO L85 PathProgramCache]: Analyzing trace with hash 674208983, now seen corresponding path program 1 times [2022-04-06 08:37:21,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:21,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588891250] [2022-04-06 08:37:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:21,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:21,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:21,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588891250] [2022-04-06 08:37:21,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588891250] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:21,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:21,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:21,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125997078] [2022-04-06 08:37:21,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:21,231 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:21,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:21,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:21,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:21,232 INFO L87 Difference]: Start difference. First operand 1545 states and 2391 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:21,294 INFO L93 Difference]: Finished difference Result 2091 states and 3208 transitions. [2022-04-06 08:37:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:21,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-04-06 08:37:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:21,300 INFO L225 Difference]: With dead ends: 2091 [2022-04-06 08:37:21,300 INFO L226 Difference]: Without dead ends: 2091 [2022-04-06 08:37:21,300 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:21,301 INFO L913 BasicCegarLoop]: 106 mSDtfsCounter, 133 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:21,301 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 113 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2022-04-06 08:37:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 2089. [2022-04-06 08:37:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2085 states have (on average 1.5366906474820143) internal successors, (3204), 2085 states have internal predecessors, (3204), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 3207 transitions. [2022-04-06 08:37:21,337 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 3207 transitions. Word has length 27 [2022-04-06 08:37:21,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:21,337 INFO L478 AbstractCegarLoop]: Abstraction has 2089 states and 3207 transitions. [2022-04-06 08:37:21,337 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 3207 transitions. [2022-04-06 08:37:21,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 08:37:21,339 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:21,339 INFO L499 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] [2022-04-06 08:37:21,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-06 08:37:21,339 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:21,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2081877160, now seen corresponding path program 1 times [2022-04-06 08:37:21,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:21,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714996186] [2022-04-06 08:37:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:21,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:21,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714996186] [2022-04-06 08:37:21,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714996186] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:21,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:21,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:21,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669842915] [2022-04-06 08:37:21,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:21,369 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:21,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:21,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:21,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:21,370 INFO L87 Difference]: Start difference. First operand 2089 states and 3207 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:21,437 INFO L93 Difference]: Finished difference Result 2123 states and 3208 transitions. [2022-04-06 08:37:21,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:21,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-04-06 08:37:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:21,443 INFO L225 Difference]: With dead ends: 2123 [2022-04-06 08:37:21,443 INFO L226 Difference]: Without dead ends: 2123 [2022-04-06 08:37:21,443 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:21,444 INFO L913 BasicCegarLoop]: 101 mSDtfsCounter, 139 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:21,445 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 108 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:21,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-04-06 08:37:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2121. [2022-04-06 08:37:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 2117 states have (on average 1.5134624468587623) internal successors, (3204), 2117 states have internal predecessors, (3204), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 3207 transitions. [2022-04-06 08:37:21,485 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 3207 transitions. Word has length 28 [2022-04-06 08:37:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:21,485 INFO L478 AbstractCegarLoop]: Abstraction has 2121 states and 3207 transitions. [2022-04-06 08:37:21,485 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 3207 transitions. [2022-04-06 08:37:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 08:37:21,487 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:21,487 INFO L499 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] [2022-04-06 08:37:21,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-06 08:37:21,487 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:21,488 INFO L85 PathProgramCache]: Analyzing trace with hash -574325351, now seen corresponding path program 1 times [2022-04-06 08:37:21,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:21,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361868600] [2022-04-06 08:37:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:21,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:21,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:21,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361868600] [2022-04-06 08:37:21,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361868600] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:21,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:21,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:21,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825574527] [2022-04-06 08:37:21,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:21,512 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:21,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:21,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:21,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:21,513 INFO L87 Difference]: Start difference. First operand 2121 states and 3207 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:21,599 INFO L93 Difference]: Finished difference Result 3723 states and 5672 transitions. [2022-04-06 08:37:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:21,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-04-06 08:37:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:21,610 INFO L225 Difference]: With dead ends: 3723 [2022-04-06 08:37:21,610 INFO L226 Difference]: Without dead ends: 3723 [2022-04-06 08:37:21,610 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:21,611 INFO L913 BasicCegarLoop]: 71 mSDtfsCounter, 143 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:21,611 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 78 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2022-04-06 08:37:21,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3081. [2022-04-06 08:37:21,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 3077 states have (on average 1.4676633084172896) internal successors, (4516), 3077 states have internal predecessors, (4516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 4519 transitions. [2022-04-06 08:37:21,677 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 4519 transitions. Word has length 28 [2022-04-06 08:37:21,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:21,677 INFO L478 AbstractCegarLoop]: Abstraction has 3081 states and 4519 transitions. [2022-04-06 08:37:21,677 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 4519 transitions. [2022-04-06 08:37:21,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 08:37:21,680 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:21,680 INFO L499 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] [2022-04-06 08:37:21,681 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-06 08:37:21,681 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1079883976, now seen corresponding path program 1 times [2022-04-06 08:37:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:21,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131948742] [2022-04-06 08:37:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:21,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:21,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131948742] [2022-04-06 08:37:21,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131948742] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:21,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:21,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715704178] [2022-04-06 08:37:21,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:21,715 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:21,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:21,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:21,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:21,716 INFO L87 Difference]: Start difference. First operand 3081 states and 4519 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:21,785 INFO L93 Difference]: Finished difference Result 4107 states and 5960 transitions. [2022-04-06 08:37:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:21,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-04-06 08:37:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:21,797 INFO L225 Difference]: With dead ends: 4107 [2022-04-06 08:37:21,797 INFO L226 Difference]: Without dead ends: 4107 [2022-04-06 08:37:21,797 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:21,798 INFO L913 BasicCegarLoop]: 108 mSDtfsCounter, 127 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:21,798 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 115 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:21,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2022-04-06 08:37:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 4105. [2022-04-06 08:37:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4105 states, 4101 states have (on average 1.4523287003169958) internal successors, (5956), 4101 states have internal predecessors, (5956), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 5959 transitions. [2022-04-06 08:37:21,870 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 5959 transitions. Word has length 28 [2022-04-06 08:37:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:21,870 INFO L478 AbstractCegarLoop]: Abstraction has 4105 states and 5959 transitions. [2022-04-06 08:37:21,871 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 5959 transitions. [2022-04-06 08:37:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-06 08:37:21,874 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:21,874 INFO L499 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] [2022-04-06 08:37:21,874 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-06 08:37:21,874 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:21,875 INFO L85 PathProgramCache]: Analyzing trace with hash -624183917, now seen corresponding path program 1 times [2022-04-06 08:37:21,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:21,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461058088] [2022-04-06 08:37:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:21,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:21,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:21,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461058088] [2022-04-06 08:37:21,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461058088] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:21,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:21,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:21,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553559236] [2022-04-06 08:37:21,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:21,918 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:21,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:21,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:21,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:21,918 INFO L87 Difference]: Start difference. First operand 4105 states and 5959 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:21,977 INFO L93 Difference]: Finished difference Result 4171 states and 5960 transitions. [2022-04-06 08:37:21,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:21,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-04-06 08:37:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:22,000 INFO L225 Difference]: With dead ends: 4171 [2022-04-06 08:37:22,001 INFO L226 Difference]: Without dead ends: 4171 [2022-04-06 08:37:22,001 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:22,002 INFO L913 BasicCegarLoop]: 98 mSDtfsCounter, 138 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:22,002 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 105 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2022-04-06 08:37:22,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 4169. [2022-04-06 08:37:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4169 states, 4165 states have (on average 1.4300120048019207) internal successors, (5956), 4165 states have internal predecessors, (5956), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 5959 transitions. [2022-04-06 08:37:22,100 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 5959 transitions. Word has length 29 [2022-04-06 08:37:22,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:22,100 INFO L478 AbstractCegarLoop]: Abstraction has 4169 states and 5959 transitions. [2022-04-06 08:37:22,100 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 5959 transitions. [2022-04-06 08:37:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-06 08:37:22,105 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:22,105 INFO L499 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] [2022-04-06 08:37:22,106 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-06 08:37:22,106 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:22,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:22,106 INFO L85 PathProgramCache]: Analyzing trace with hash 883367892, now seen corresponding path program 1 times [2022-04-06 08:37:22,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:22,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707631555] [2022-04-06 08:37:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:22,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:22,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:22,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707631555] [2022-04-06 08:37:22,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707631555] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:22,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:22,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:22,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806898486] [2022-04-06 08:37:22,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:22,141 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:22,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:22,141 INFO L87 Difference]: Start difference. First operand 4169 states and 5959 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:22,210 INFO L93 Difference]: Finished difference Result 7179 states and 10312 transitions. [2022-04-06 08:37:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:22,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-04-06 08:37:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:22,227 INFO L225 Difference]: With dead ends: 7179 [2022-04-06 08:37:22,227 INFO L226 Difference]: Without dead ends: 7179 [2022-04-06 08:37:22,227 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:22,229 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 136 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:22,229 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 77 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:22,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7179 states. [2022-04-06 08:37:22,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7179 to 6153. [2022-04-06 08:37:22,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6153 states, 6149 states have (on average 1.3849406407545943) internal successors, (8516), 6149 states have internal predecessors, (8516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 8519 transitions. [2022-04-06 08:37:22,347 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 8519 transitions. Word has length 29 [2022-04-06 08:37:22,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:22,348 INFO L478 AbstractCegarLoop]: Abstraction has 6153 states and 8519 transitions. [2022-04-06 08:37:22,348 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 8519 transitions. [2022-04-06 08:37:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-06 08:37:22,355 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:22,355 INFO L499 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] [2022-04-06 08:37:22,355 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-06 08:37:22,355 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:22,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash 377809267, now seen corresponding path program 1 times [2022-04-06 08:37:22,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:22,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077133238] [2022-04-06 08:37:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:22,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:22,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:22,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077133238] [2022-04-06 08:37:22,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077133238] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:22,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:22,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120294750] [2022-04-06 08:37:22,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:22,390 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:22,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:22,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:22,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:22,390 INFO L87 Difference]: Start difference. First operand 6153 states and 8519 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:22,459 INFO L93 Difference]: Finished difference Result 8075 states and 11016 transitions. [2022-04-06 08:37:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:22,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-04-06 08:37:22,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:22,474 INFO L225 Difference]: With dead ends: 8075 [2022-04-06 08:37:22,474 INFO L226 Difference]: Without dead ends: 8075 [2022-04-06 08:37:22,475 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:22,476 INFO L913 BasicCegarLoop]: 110 mSDtfsCounter, 121 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:22,476 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 117 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:22,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8075 states. [2022-04-06 08:37:22,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8075 to 8073. [2022-04-06 08:37:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8073 states, 8069 states have (on average 1.3647292105589293) internal successors, (11012), 8069 states have internal predecessors, (11012), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8073 states to 8073 states and 11015 transitions. [2022-04-06 08:37:22,653 INFO L78 Accepts]: Start accepts. Automaton has 8073 states and 11015 transitions. Word has length 29 [2022-04-06 08:37:22,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:22,653 INFO L478 AbstractCegarLoop]: Abstraction has 8073 states and 11015 transitions. [2022-04-06 08:37:22,654 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,654 INFO L276 IsEmpty]: Start isEmpty. Operand 8073 states and 11015 transitions. [2022-04-06 08:37:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-06 08:37:22,661 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:22,661 INFO L499 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] [2022-04-06 08:37:22,661 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-06 08:37:22,662 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1614633780, now seen corresponding path program 1 times [2022-04-06 08:37:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:22,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940580184] [2022-04-06 08:37:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:22,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:22,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:22,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940580184] [2022-04-06 08:37:22,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940580184] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:22,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:22,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:22,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798144370] [2022-04-06 08:37:22,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:22,688 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:22,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:22,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:22,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:22,688 INFO L87 Difference]: Start difference. First operand 8073 states and 11015 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:22,765 INFO L93 Difference]: Finished difference Result 8203 states and 11016 transitions. [2022-04-06 08:37:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:22,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-04-06 08:37:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:22,780 INFO L225 Difference]: With dead ends: 8203 [2022-04-06 08:37:22,781 INFO L226 Difference]: Without dead ends: 8203 [2022-04-06 08:37:22,781 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:22,783 INFO L913 BasicCegarLoop]: 95 mSDtfsCounter, 137 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:22,783 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 102 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:22,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8203 states. [2022-04-06 08:37:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8203 to 8201. [2022-04-06 08:37:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8201 states, 8197 states have (on average 1.3434183237769917) internal successors, (11012), 8197 states have internal predecessors, (11012), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 11015 transitions. [2022-04-06 08:37:22,906 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 11015 transitions. Word has length 30 [2022-04-06 08:37:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:22,906 INFO L478 AbstractCegarLoop]: Abstraction has 8201 states and 11015 transitions. [2022-04-06 08:37:22,907 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 11015 transitions. [2022-04-06 08:37:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-06 08:37:22,914 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:22,914 INFO L499 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] [2022-04-06 08:37:22,914 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-06 08:37:22,914 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:22,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1172781707, now seen corresponding path program 1 times [2022-04-06 08:37:22,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:22,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856845560] [2022-04-06 08:37:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:22,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:22,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:22,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856845560] [2022-04-06 08:37:22,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856845560] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:22,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:22,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994694847] [2022-04-06 08:37:22,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:22,949 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:22,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:22,949 INFO L87 Difference]: Start difference. First operand 8201 states and 11015 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:23,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:23,036 INFO L93 Difference]: Finished difference Result 13835 states and 18568 transitions. [2022-04-06 08:37:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:23,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-04-06 08:37:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:23,109 INFO L225 Difference]: With dead ends: 13835 [2022-04-06 08:37:23,109 INFO L226 Difference]: Without dead ends: 13835 [2022-04-06 08:37:23,110 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:23,110 INFO L913 BasicCegarLoop]: 69 mSDtfsCounter, 129 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:23,111 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 76 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13835 states. [2022-04-06 08:37:23,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13835 to 12297. [2022-04-06 08:37:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12297 states, 12293 states have (on average 1.3018791181973481) internal successors, (16004), 12293 states have internal predecessors, (16004), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12297 states to 12297 states and 16007 transitions. [2022-04-06 08:37:23,290 INFO L78 Accepts]: Start accepts. Automaton has 12297 states and 16007 transitions. Word has length 30 [2022-04-06 08:37:23,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:23,290 INFO L478 AbstractCegarLoop]: Abstraction has 12297 states and 16007 transitions. [2022-04-06 08:37:23,290 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:23,290 INFO L276 IsEmpty]: Start isEmpty. Operand 12297 states and 16007 transitions. [2022-04-06 08:37:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-06 08:37:23,303 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:23,303 INFO L499 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] [2022-04-06 08:37:23,303 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-06 08:37:23,303 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:23,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:23,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1678340332, now seen corresponding path program 1 times [2022-04-06 08:37:23,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:23,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549219565] [2022-04-06 08:37:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:23,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:23,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:23,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549219565] [2022-04-06 08:37:23,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549219565] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:23,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:23,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:23,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84674537] [2022-04-06 08:37:23,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:23,329 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:23,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:23,329 INFO L87 Difference]: Start difference. First operand 12297 states and 16007 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:23,413 INFO L93 Difference]: Finished difference Result 15883 states and 20232 transitions. [2022-04-06 08:37:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:23,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-04-06 08:37:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:23,434 INFO L225 Difference]: With dead ends: 15883 [2022-04-06 08:37:23,434 INFO L226 Difference]: Without dead ends: 15883 [2022-04-06 08:37:23,434 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:23,435 INFO L913 BasicCegarLoop]: 112 mSDtfsCounter, 115 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:23,437 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 119 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:23,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15883 states. [2022-04-06 08:37:23,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15883 to 15881. [2022-04-06 08:37:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15881 states, 15877 states have (on average 1.2740442149020597) internal successors, (20228), 15877 states have internal predecessors, (20228), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15881 states to 15881 states and 20231 transitions. [2022-04-06 08:37:23,658 INFO L78 Accepts]: Start accepts. Automaton has 15881 states and 20231 transitions. Word has length 30 [2022-04-06 08:37:23,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:23,658 INFO L478 AbstractCegarLoop]: Abstraction has 15881 states and 20231 transitions. [2022-04-06 08:37:23,658 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 15881 states and 20231 transitions. [2022-04-06 08:37:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-06 08:37:23,673 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:23,673 INFO L499 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] [2022-04-06 08:37:23,673 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-06 08:37:23,673 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:23,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1996461521, now seen corresponding path program 1 times [2022-04-06 08:37:23,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:23,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565863515] [2022-04-06 08:37:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:23,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:23,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:23,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:23,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565863515] [2022-04-06 08:37:23,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565863515] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:23,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:23,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:23,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087814015] [2022-04-06 08:37:23,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:23,698 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:23,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:23,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:23,698 INFO L87 Difference]: Start difference. First operand 15881 states and 20231 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:23,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:23,792 INFO L93 Difference]: Finished difference Result 16139 states and 20232 transitions. [2022-04-06 08:37:23,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:23,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-04-06 08:37:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:23,920 INFO L225 Difference]: With dead ends: 16139 [2022-04-06 08:37:23,920 INFO L226 Difference]: Without dead ends: 16139 [2022-04-06 08:37:23,921 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:23,921 INFO L913 BasicCegarLoop]: 92 mSDtfsCounter, 136 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:23,922 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 99 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16139 states. [2022-04-06 08:37:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16139 to 16137. [2022-04-06 08:37:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16137 states, 16133 states have (on average 1.2538275584206284) internal successors, (20228), 16133 states have internal predecessors, (20228), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16137 states to 16137 states and 20231 transitions. [2022-04-06 08:37:24,155 INFO L78 Accepts]: Start accepts. Automaton has 16137 states and 20231 transitions. Word has length 31 [2022-04-06 08:37:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:24,156 INFO L478 AbstractCegarLoop]: Abstraction has 16137 states and 20231 transitions. [2022-04-06 08:37:24,156 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 16137 states and 20231 transitions. [2022-04-06 08:37:24,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-06 08:37:24,175 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:24,175 INFO L499 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] [2022-04-06 08:37:24,175 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-06 08:37:24,175 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:24,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash -488909712, now seen corresponding path program 1 times [2022-04-06 08:37:24,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:24,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838224316] [2022-04-06 08:37:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:24,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:24,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:24,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:24,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838224316] [2022-04-06 08:37:24,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838224316] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:24,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:24,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:24,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778358972] [2022-04-06 08:37:24,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:24,194 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:24,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:24,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:24,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:24,195 INFO L87 Difference]: Start difference. First operand 16137 states and 20231 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:24,307 INFO L93 Difference]: Finished difference Result 26635 states and 33032 transitions. [2022-04-06 08:37:24,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:24,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-04-06 08:37:24,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:24,346 INFO L225 Difference]: With dead ends: 26635 [2022-04-06 08:37:24,346 INFO L226 Difference]: Without dead ends: 26635 [2022-04-06 08:37:24,346 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:24,347 INFO L913 BasicCegarLoop]: 68 mSDtfsCounter, 122 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:24,348 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 75 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26635 states. [2022-04-06 08:37:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26635 to 24585. [2022-04-06 08:37:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24585 states, 24581 states have (on average 1.2186648224238232) internal successors, (29956), 24581 states have internal predecessors, (29956), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24585 states to 24585 states and 29959 transitions. [2022-04-06 08:37:24,724 INFO L78 Accepts]: Start accepts. Automaton has 24585 states and 29959 transitions. Word has length 31 [2022-04-06 08:37:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:24,724 INFO L478 AbstractCegarLoop]: Abstraction has 24585 states and 29959 transitions. [2022-04-06 08:37:24,724 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:24,724 INFO L276 IsEmpty]: Start isEmpty. Operand 24585 states and 29959 transitions. [2022-04-06 08:37:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-06 08:37:24,838 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:24,839 INFO L499 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] [2022-04-06 08:37:24,839 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-06 08:37:24,839 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:24,839 INFO L85 PathProgramCache]: Analyzing trace with hash -994468337, now seen corresponding path program 1 times [2022-04-06 08:37:24,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:24,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51782074] [2022-04-06 08:37:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:24,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:24,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:24,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51782074] [2022-04-06 08:37:24,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51782074] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:24,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:24,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:24,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931331311] [2022-04-06 08:37:24,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:24,857 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:24,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:24,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:24,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:24,857 INFO L87 Difference]: Start difference. First operand 24585 states and 29959 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:24,977 INFO L93 Difference]: Finished difference Result 31243 states and 36872 transitions. [2022-04-06 08:37:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:24,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-04-06 08:37:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:25,086 INFO L225 Difference]: With dead ends: 31243 [2022-04-06 08:37:25,086 INFO L226 Difference]: Without dead ends: 31243 [2022-04-06 08:37:25,086 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:25,087 INFO L913 BasicCegarLoop]: 114 mSDtfsCounter, 109 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:25,087 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 121 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31243 states. [2022-04-06 08:37:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31243 to 31241. [2022-04-06 08:37:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31241 states, 31237 states have (on average 1.1802669910682844) internal successors, (36868), 31237 states have internal predecessors, (36868), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31241 states to 31241 states and 36871 transitions. [2022-04-06 08:37:25,386 INFO L78 Accepts]: Start accepts. Automaton has 31241 states and 36871 transitions. Word has length 31 [2022-04-06 08:37:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:25,387 INFO L478 AbstractCegarLoop]: Abstraction has 31241 states and 36871 transitions. [2022-04-06 08:37:25,387 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 31241 states and 36871 transitions. [2022-04-06 08:37:25,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 08:37:25,402 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:25,402 INFO L499 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] [2022-04-06 08:37:25,402 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-06 08:37:25,402 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2023701264, now seen corresponding path program 1 times [2022-04-06 08:37:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:25,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014605961] [2022-04-06 08:37:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:25,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:25,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:25,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014605961] [2022-04-06 08:37:25,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014605961] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:25,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:25,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:25,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720198864] [2022-04-06 08:37:25,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:25,421 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:25,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:25,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:25,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:25,422 INFO L87 Difference]: Start difference. First operand 31241 states and 36871 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:25,538 INFO L93 Difference]: Finished difference Result 31755 states and 36872 transitions. [2022-04-06 08:37:25,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:25,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-04-06 08:37:25,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:25,576 INFO L225 Difference]: With dead ends: 31755 [2022-04-06 08:37:25,577 INFO L226 Difference]: Without dead ends: 31755 [2022-04-06 08:37:25,577 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:25,577 INFO L913 BasicCegarLoop]: 89 mSDtfsCounter, 135 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:25,578 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 96 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31755 states. [2022-04-06 08:37:26,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31755 to 31753. [2022-04-06 08:37:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31753 states, 31749 states have (on average 1.1612334246747928) internal successors, (36868), 31749 states have internal predecessors, (36868), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31753 states to 31753 states and 36871 transitions. [2022-04-06 08:37:26,084 INFO L78 Accepts]: Start accepts. Automaton has 31753 states and 36871 transitions. Word has length 32 [2022-04-06 08:37:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:26,084 INFO L478 AbstractCegarLoop]: Abstraction has 31753 states and 36871 transitions. [2022-04-06 08:37:26,084 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 31753 states and 36871 transitions. [2022-04-06 08:37:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 08:37:26,098 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:26,098 INFO L499 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] [2022-04-06 08:37:26,098 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-06 08:37:26,098 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash -763714223, now seen corresponding path program 1 times [2022-04-06 08:37:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:26,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724040724] [2022-04-06 08:37:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:26,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:26,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:26,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724040724] [2022-04-06 08:37:26,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724040724] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:26,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:26,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:26,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830181210] [2022-04-06 08:37:26,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:26,115 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:26,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:26,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:26,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:26,115 INFO L87 Difference]: Start difference. First operand 31753 states and 36871 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:26,253 INFO L93 Difference]: Finished difference Result 51209 states and 57863 transitions. [2022-04-06 08:37:26,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:26,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-04-06 08:37:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:26,311 INFO L225 Difference]: With dead ends: 51209 [2022-04-06 08:37:26,311 INFO L226 Difference]: Without dead ends: 51209 [2022-04-06 08:37:26,311 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:26,311 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 114 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:26,312 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 73 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:37:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51209 states. [2022-04-06 08:37:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51209 to 49161. [2022-04-06 08:37:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49161 states, 49157 states have (on average 1.13538254978945) internal successors, (55812), 49157 states have internal predecessors, (55812), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49161 states to 49161 states and 55815 transitions. [2022-04-06 08:37:26,915 INFO L78 Accepts]: Start accepts. Automaton has 49161 states and 55815 transitions. Word has length 32 [2022-04-06 08:37:26,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:26,915 INFO L478 AbstractCegarLoop]: Abstraction has 49161 states and 55815 transitions. [2022-04-06 08:37:26,915 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 49161 states and 55815 transitions. [2022-04-06 08:37:26,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 08:37:26,952 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:37:26,952 INFO L499 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] [2022-04-06 08:37:26,953 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-06 08:37:26,953 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:37:26,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:37:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1269272848, now seen corresponding path program 1 times [2022-04-06 08:37:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:37:26,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023299108] [2022-04-06 08:37:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:37:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:37:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:26,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:37:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:37:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:37:26,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:37:26,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023299108] [2022-04-06 08:37:26,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023299108] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:37:26,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:37:26,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 08:37:26,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623896144] [2022-04-06 08:37:26,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:37:26,970 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 08:37:26,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:37:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 08:37:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 08:37:26,970 INFO L87 Difference]: Start difference. First operand 49161 states and 55815 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:37:27,162 INFO L93 Difference]: Finished difference Result 61447 states and 66566 transitions. [2022-04-06 08:37:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 08:37:27,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-04-06 08:37:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:37:27,171 INFO L225 Difference]: With dead ends: 61447 [2022-04-06 08:37:27,171 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 08:37:27,171 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:37:27,172 INFO L913 BasicCegarLoop]: 115 mSDtfsCounter, 100 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:37:27,172 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 122 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:37:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 08:37:27,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 08:37:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 08:37:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 08:37:27,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2022-04-06 08:37:27,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:37:27,173 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 08:37:27,173 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 08:37:27,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 08:37:27,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 08:37:27,175 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 08:37:27,182 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-06 08:37:27,184 INFO L719 BasicCegarLoop]: Path program 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] [2022-04-06 08:37:27,185 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 08:37:27,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:37:27 BasicIcfg [2022-04-06 08:37:27,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 08:37:27,188 INFO L158 Benchmark]: Toolchain (without parser) took 9382.29ms. Allocated memory was 189.8MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 139.6MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 530.9MB. Max. memory is 8.0GB. [2022-04-06 08:37:27,188 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 08:37:27,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.27ms. Allocated memory is still 189.8MB. Free memory was 139.4MB in the beginning and 165.7MB in the end (delta: -26.3MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2022-04-06 08:37:27,189 INFO L158 Benchmark]: Boogie Preprocessor took 43.99ms. Allocated memory is still 189.8MB. Free memory was 165.7MB in the beginning and 164.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 08:37:27,190 INFO L158 Benchmark]: RCFGBuilder took 273.35ms. Allocated memory is still 189.8MB. Free memory was 164.2MB in the beginning and 151.1MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-04-06 08:37:27,190 INFO L158 Benchmark]: IcfgTransformer took 22.03ms. Allocated memory is still 189.8MB. Free memory was 151.1MB in the beginning and 149.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 08:37:27,191 INFO L158 Benchmark]: TraceAbstraction took 8728.27ms. Allocated memory was 189.8MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 149.0MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 539.8MB. Max. memory is 8.0GB. [2022-04-06 08:37:27,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.27ms. Allocated memory is still 189.8MB. Free memory was 139.4MB in the beginning and 165.7MB in the end (delta: -26.3MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.99ms. Allocated memory is still 189.8MB. Free memory was 165.7MB in the beginning and 164.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 273.35ms. Allocated memory is still 189.8MB. Free memory was 164.2MB in the beginning and 151.1MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * IcfgTransformer took 22.03ms. Allocated memory is still 189.8MB. Free memory was 151.1MB in the beginning and 149.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 8728.27ms. Allocated memory was 189.8MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 149.0MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 539.8MB. 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 - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.7s, OverallIterations: 31, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4339 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4339 mSDsluCounter, 3131 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 219 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2036 IncrementalHoareTripleChecker+Invalid, 2109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 2912 mSDtfsCounter, 2036 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49161occurred in iteration=30, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 31 MinimizatonAttempts, 8224 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 843 NumberOfCodeBlocks, 843 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 812 ConstructedInterpolants, 0 QuantifiedInterpolants, 1801 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-06 08:37:27,223 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...