/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/loop-invgen/SpamAssassin-loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 00:26:48,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 00:26:48,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 00:26:49,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 00:26:49,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 00:26:49,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 00:26:49,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 00:26:49,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 00:26:49,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 00:26:49,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 00:26:49,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 00:26:49,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 00:26:49,053 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 00:26:49,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 00:26:49,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 00:26:49,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 00:26:49,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 00:26:49,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 00:26:49,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 00:26:49,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 00:26:49,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 00:26:49,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 00:26:49,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 00:26:49,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 00:26:49,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 00:26:49,095 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 00:26:49,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 00:26:49,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 00:26:49,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 00:26:49,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 00:26:49,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 00:26:49,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 00:26:49,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 00:26:49,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 00:26:49,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 00:26:49,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 00:26:49,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 00:26:49,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 00:26:49,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 00:26:49,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 00:26:49,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 00:26:49,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 00:26:49,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 00:26:49,099 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 00:26:49,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 00:26:49,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 00:26:49,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 00:26:49,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 00:26:49,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 00:26:49,377 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 00:26:49,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2022-04-05 00:26:49,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655d571bf/b9124d37511a4b6996a4e3da01cdcc25/FLAG2fd7e2665 [2022-04-05 00:26:49,823 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 00:26:49,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2022-04-05 00:26:49,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655d571bf/b9124d37511a4b6996a4e3da01cdcc25/FLAG2fd7e2665 [2022-04-05 00:26:50,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655d571bf/b9124d37511a4b6996a4e3da01cdcc25 [2022-04-05 00:26:50,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 00:26:50,236 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 00:26:50,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 00:26:50,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 00:26:50,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 00:26:50,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f7a0ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50, skipping insertion in model container [2022-04-05 00:26:50,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 00:26:50,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 00:26:50,408 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i[893,906] [2022-04-05 00:26:50,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 00:26:50,434 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 00:26:50,445 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i[893,906] [2022-04-05 00:26:50,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 00:26:50,462 INFO L208 MainTranslator]: Completed translation [2022-04-05 00:26:50,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50 WrapperNode [2022-04-05 00:26:50,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 00:26:50,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 00:26:50,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 00:26:50,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 00:26:50,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 00:26:50,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 00:26:50,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 00:26:50,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 00:26:50,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 00:26:50,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 00:26:50,528 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) [2022-04-05 00:26:50,542 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 [2022-04-05 00:26:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 00:26:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 00:26:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 00:26:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 00:26:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 00:26:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 00:26:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 00:26:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 00:26:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-05 00:26:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-05 00:26:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 00:26:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 00:26:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 00:26:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 00:26:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 00:26:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 00:26:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 00:26:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 00:26:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 00:26:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 00:26:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 00:26:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 00:26:50,625 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 00:26:50,626 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 00:26:50,779 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 00:26:50,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 00:26:50,790 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-05 00:26:50,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:26:50 BoogieIcfgContainer [2022-04-05 00:26:50,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 00:26:50,793 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 00:26:50,793 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 00:26:50,795 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 00:26:50,797 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:26:50" (1/1) ... [2022-04-05 00:26:50,800 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 00:26:50,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 12:26:50 BasicIcfg [2022-04-05 00:26:50,816 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 00:26:50,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 00:26:50,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 00:26:50,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 00:26:50,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 12:26:50" (1/4) ... [2022-04-05 00:26:50,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7254a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 12:26:50, skipping insertion in model container [2022-04-05 00:26:50,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:26:50" (2/4) ... [2022-04-05 00:26:50,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7254a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 12:26:50, skipping insertion in model container [2022-04-05 00:26:50,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:26:50" (3/4) ... [2022-04-05 00:26:50,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7254a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 12:26:50, skipping insertion in model container [2022-04-05 00:26:50,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 12:26:50" (4/4) ... [2022-04-05 00:26:50,823 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.iJordan [2022-04-05 00:26:50,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 00:26:50,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 00:26:50,877 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 00:26:50,902 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 [2022-04-05 00:26:50,903 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 00:26:50,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 00:26:50,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-05 00:26:50,934 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:26:50,935 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:26:50,936 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:26:50,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:26:50,943 INFO L85 PathProgramCache]: Analyzing trace with hash -868390563, now seen corresponding path program 1 times [2022-04-05 00:26:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:26:50,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550600094] [2022-04-05 00:26:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:26:50,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:26:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:51,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:26:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:26:51,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:26:51,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550600094] [2022-04-05 00:26:51,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550600094] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:26:51,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:26:51,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 00:26:51,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794306816] [2022-04-05 00:26:51,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:26:51,184 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 00:26:51,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:26:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 00:26:51,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 00:26:51,214 INFO L87 Difference]: Start difference. First operand has 43 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:26:51,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:26:51,539 INFO L93 Difference]: Finished difference Result 52 states and 74 transitions. [2022-04-05 00:26:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 00:26:51,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-05 00:26:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:26:51,549 INFO L225 Difference]: With dead ends: 52 [2022-04-05 00:26:51,550 INFO L226 Difference]: Without dead ends: 47 [2022-04-05 00:26:51,551 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 00:26:51,555 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 34 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 00:26:51,556 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 68 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 00:26:51,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-04-05 00:26:51,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2022-04-05 00:26:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 19 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 00:26:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 61 transitions. [2022-04-05 00:26:51,599 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 61 transitions. Word has length 14 [2022-04-05 00:26:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:26:51,599 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 61 transitions. [2022-04-05 00:26:51,600 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:26:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2022-04-05 00:26:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-05 00:26:51,601 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:26:51,601 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:26:51,601 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 00:26:51,602 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:26:51,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:26:51,603 INFO L85 PathProgramCache]: Analyzing trace with hash -867437251, now seen corresponding path program 1 times [2022-04-05 00:26:51,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:26:51,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568845687] [2022-04-05 00:26:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:26:51,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:26:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:26:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:26:51,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:26:51,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568845687] [2022-04-05 00:26:51,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568845687] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:26:51,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:26:51,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 00:26:51,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305735448] [2022-04-05 00:26:51,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:26:51,672 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 00:26:51,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:26:51,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 00:26:51,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 00:26:51,673 INFO L87 Difference]: Start difference. First operand 43 states and 61 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:26:51,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:26:51,839 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2022-04-05 00:26:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 00:26:51,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-05 00:26:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:26:51,842 INFO L225 Difference]: With dead ends: 53 [2022-04-05 00:26:51,842 INFO L226 Difference]: Without dead ends: 53 [2022-04-05 00:26:51,843 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 00:26:51,844 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 28 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 00:26:51,845 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 52 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 00:26:51,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-04-05 00:26:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-04-05 00:26:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 00:26:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2022-04-05 00:26:51,854 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 14 [2022-04-05 00:26:51,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:26:51,854 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2022-04-05 00:26:51,855 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:26:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2022-04-05 00:26:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-05 00:26:51,855 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:26:51,856 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:26:51,856 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 00:26:51,856 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:26:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:26:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1607544442, now seen corresponding path program 1 times [2022-04-05 00:26:51,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:26:51,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55925854] [2022-04-05 00:26:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:26:51,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:26:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:26:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 00:26:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:26:51,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:26:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55925854] [2022-04-05 00:26:51,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55925854] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:26:51,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:26:51,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 00:26:51,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168008501] [2022-04-05 00:26:51,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:26:51,949 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 00:26:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:26:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 00:26:51,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 00:26:51,950 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 00:26:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:26:52,176 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2022-04-05 00:26:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 00:26:52,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-04-05 00:26:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:26:52,178 INFO L225 Difference]: With dead ends: 55 [2022-04-05 00:26:52,178 INFO L226 Difference]: Without dead ends: 55 [2022-04-05 00:26:52,178 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 00:26:52,179 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 00:26:52,180 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 50 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 00:26:52,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-05 00:26:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-04-05 00:26:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 00:26:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-04-05 00:26:52,187 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 19 [2022-04-05 00:26:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:26:52,188 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-04-05 00:26:52,188 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 00:26:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-04-05 00:26:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-05 00:26:52,189 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:26:52,189 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:26:52,189 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-05 00:26:52,189 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:26:52,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:26:52,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1153064602, now seen corresponding path program 1 times [2022-04-05 00:26:52,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:26:52,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568922193] [2022-04-05 00:26:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:26:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:26:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:26:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 00:26:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 00:26:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 00:26:52,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:26:52,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568922193] [2022-04-05 00:26:52,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568922193] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:26:52,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:26:52,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 00:26:52,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12130460] [2022-04-05 00:26:52,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:26:52,330 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 00:26:52,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:26:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 00:26:52,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-04-05 00:26:52,331 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 00:26:52,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:26:52,508 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-04-05 00:26:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 00:26:52,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-05 00:26:52,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:26:52,510 INFO L225 Difference]: With dead ends: 59 [2022-04-05 00:26:52,510 INFO L226 Difference]: Without dead ends: 59 [2022-04-05 00:26:52,511 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-05 00:26:52,512 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 34 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 00:26:52,513 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 59 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 00:26:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-04-05 00:26:52,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-04-05 00:26:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 00:26:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2022-04-05 00:26:52,520 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 24 [2022-04-05 00:26:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:26:52,520 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2022-04-05 00:26:52,521 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 00:26:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2022-04-05 00:26:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-05 00:26:52,522 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:26:52,522 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:26:52,522 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-05 00:26:52,522 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:26:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:26:52,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1359459551, now seen corresponding path program 1 times [2022-04-05 00:26:52,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:26:52,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629309176] [2022-04-05 00:26:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:26:52,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:26:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:26:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 00:26:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 00:26:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 00:26:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 00:26:52,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:26:52,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629309176] [2022-04-05 00:26:52,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629309176] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:26:52,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:26:52,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 00:26:52,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242372527] [2022-04-05 00:26:52,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:26:52,607 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 00:26:52,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:26:52,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 00:26:52,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 00:26:52,608 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 00:26:52,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:26:52,751 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2022-04-05 00:26:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 00:26:52,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-04-05 00:26:52,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:26:52,755 INFO L225 Difference]: With dead ends: 64 [2022-04-05 00:26:52,755 INFO L226 Difference]: Without dead ends: 64 [2022-04-05 00:26:52,756 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 00:26:52,762 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 00:26:52,763 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 53 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 00:26:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-04-05 00:26:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-04-05 00:26:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 00:26:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2022-04-05 00:26:52,780 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 29 [2022-04-05 00:26:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:26:52,780 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2022-04-05 00:26:52,781 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 00:26:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2022-04-05 00:26:52,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-05 00:26:52,782 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:26:52,782 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:26:52,782 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-05 00:26:52,783 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:26:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:26:52,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1056918318, now seen corresponding path program 1 times [2022-04-05 00:26:52,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:26:52,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926775712] [2022-04-05 00:26:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:26:52,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:26:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:26:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 00:26:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 00:26:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 00:26:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 00:26:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 00:26:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 00:26:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 00:26:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:26:52,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926775712] [2022-04-05 00:26:52,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926775712] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:26:52,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:26:52,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 00:26:52,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260523529] [2022-04-05 00:26:52,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:26:52,966 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 00:26:52,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:26:52,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 00:26:52,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-04-05 00:26:52,967 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 00:26:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:26:53,171 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2022-04-05 00:26:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 00:26:53,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-04-05 00:26:53,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:26:53,173 INFO L225 Difference]: With dead ends: 73 [2022-04-05 00:26:53,173 INFO L226 Difference]: Without dead ends: 73 [2022-04-05 00:26:53,173 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-04-05 00:26:53,174 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 00:26:53,175 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 57 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 00:26:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-04-05 00:26:53,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2022-04-05 00:26:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 00:26:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2022-04-05 00:26:53,181 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 47 [2022-04-05 00:26:53,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:26:53,181 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2022-04-05 00:26:53,181 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 00:26:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2022-04-05 00:26:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-05 00:26:53,182 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:26:53,182 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:26:53,182 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-05 00:26:53,183 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:26:53,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:26:53,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1366093938, now seen corresponding path program 1 times [2022-04-05 00:26:53,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:26:53,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507796126] [2022-04-05 00:26:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:26:53,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:26:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:26:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 00:26:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 00:26:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 00:26:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 00:26:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 00:26:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 00:26:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 00:26:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 00:26:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 00:26:53,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:26:53,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507796126] [2022-04-05 00:26:53,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507796126] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:26:53,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:26:53,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 00:26:53,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913240139] [2022-04-05 00:26:53,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:26:53,297 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 00:26:53,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:26:53,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 00:26:53,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-04-05 00:26:53,298 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 00:26:53,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:26:53,533 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2022-04-05 00:26:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 00:26:53,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 57 [2022-04-05 00:26:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:26:53,543 INFO L225 Difference]: With dead ends: 73 [2022-04-05 00:26:53,543 INFO L226 Difference]: Without dead ends: 73 [2022-04-05 00:26:53,544 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-04-05 00:26:53,544 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 00:26:53,545 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 64 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 00:26:53,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-04-05 00:26:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-04-05 00:26:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 42 states have internal predecessors, (45), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 00:26:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2022-04-05 00:26:53,558 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 57 [2022-04-05 00:26:53,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:26:53,559 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2022-04-05 00:26:53,559 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 00:26:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2022-04-05 00:26:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-05 00:26:53,561 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:26:53,561 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:26:53,561 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-05 00:26:53,561 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:26:53,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:26:53,562 INFO L85 PathProgramCache]: Analyzing trace with hash -430516171, now seen corresponding path program 1 times [2022-04-05 00:26:53,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:26:53,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286231234] [2022-04-05 00:26:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:26:53,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:26:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:26:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 00:26:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 00:26:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 00:26:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 00:26:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 00:26:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 00:26:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 00:26:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 00:26:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 00:26:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 00:26:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:26:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 00:26:53,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:26:53,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286231234] [2022-04-05 00:26:53,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286231234] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:26:53,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:26:53,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 00:26:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777775002] [2022-04-05 00:26:53,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:26:53,721 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 00:26:53,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:26:53,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 00:26:53,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-04-05 00:26:53,722 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-05 00:26:53,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:26:53,936 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-04-05 00:26:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 00:26:53,937 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 68 [2022-04-05 00:26:53,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:26:53,938 INFO L225 Difference]: With dead ends: 71 [2022-04-05 00:26:53,938 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 00:26:53,938 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-04-05 00:26:53,941 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 36 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 00:26:53,941 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 56 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 00:26:53,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 00:26:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 00:26:53,943 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) [2022-04-05 00:26:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 00:26:53,943 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2022-04-05 00:26:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:26:53,945 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 00:26:53,946 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-05 00:26:53,946 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 00:26:53,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 00:26:53,948 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 00:26:53,950 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-05 00:26:53,953 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:26:53,955 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 00:26:53,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 12:26:53 BasicIcfg [2022-04-05 00:26:53,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 00:26:53,959 INFO L158 Benchmark]: Toolchain (without parser) took 3722.85ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 119.7MB in the beginning and 159.1MB in the end (delta: -39.4MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2022-04-05 00:26:53,959 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 00:26:53,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.37ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 119.5MB in the beginning and 195.9MB in the end (delta: -76.4MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2022-04-05 00:26:53,959 INFO L158 Benchmark]: Boogie Preprocessor took 25.76ms. Allocated memory is still 224.4MB. Free memory was 195.9MB in the beginning and 194.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 00:26:53,959 INFO L158 Benchmark]: RCFGBuilder took 302.69ms. Allocated memory is still 224.4MB. Free memory was 194.3MB in the beginning and 182.3MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 00:26:53,960 INFO L158 Benchmark]: IcfgTransformer took 22.43ms. Allocated memory is still 224.4MB. Free memory was 182.3MB in the beginning and 180.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 00:26:53,960 INFO L158 Benchmark]: TraceAbstraction took 3140.93ms. Allocated memory is still 224.4MB. Free memory was 180.3MB in the beginning and 159.1MB in the end (delta: 21.1MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-04-05 00:26:53,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.37ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 119.5MB in the beginning and 195.9MB in the end (delta: -76.4MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.76ms. Allocated memory is still 224.4MB. Free memory was 195.9MB in the beginning and 194.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 302.69ms. Allocated memory is still 224.4MB. Free memory was 194.3MB in the beginning and 182.3MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 22.43ms. Allocated memory is still 224.4MB. Free memory was 182.3MB in the beginning and 180.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 3140.93ms. Allocated memory is still 224.4MB. Free memory was 180.3MB in the beginning and 159.1MB in the end (delta: 21.1MB). Peak memory consumption was 22.0MB. 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: 19]: 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 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 268 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 250 mSDsluCounter, 459 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 165 mSDsCounter, 489 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1489 IncrementalHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 489 mSolverCounterUnsat, 294 mSDtfsCounter, 1489 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=7, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 428/428 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! [2022-04-05 00:26:53,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...