/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/openssl-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 07:28:21,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 07:28:21,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 07:28:21,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 07:28:21,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 07:28:21,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 07:28:21,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 07:28:21,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 07:28:21,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 07:28:21,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 07:28:21,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 07:28:21,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 07:28:21,574 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 07:28:21,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 07:28:21,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 07:28:21,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 07:28:21,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 07:28:21,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 07:28:21,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 07:28:21,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 07:28:21,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 07:28:21,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 07:28:21,599 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 07:28:21,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 07:28:21,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 07:28:21,602 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 07:28:21,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 07:28:21,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 07:28:21,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 07:28:21,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 07:28:21,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 07:28:21,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 07:28:21,603 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 07:28:21,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 07:28:21,603 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 07:28:21,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 07:28:21,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 07:28:21,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 07:28:21,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 07:28:21,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 07:28:21,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 07:28:21,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 07:28:21,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 07:28:21,604 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 07:28:21,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 07:28:21,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 07:28:21,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 07:28:21,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 07:28:21,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 07:28:21,840 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 07:28:21,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c [2022-03-20 07:28:21,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83b78e8c/27c9c4a9019f4c578d92c89f3fc3c5f5/FLAGbbdb1c157 [2022-03-20 07:28:22,203 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 07:28:22,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c [2022-03-20 07:28:22,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83b78e8c/27c9c4a9019f4c578d92c89f3fc3c5f5/FLAGbbdb1c157 [2022-03-20 07:28:22,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83b78e8c/27c9c4a9019f4c578d92c89f3fc3c5f5 [2022-03-20 07:28:22,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 07:28:22,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 07:28:22,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 07:28:22,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 07:28:22,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 07:28:22,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:28:22" (1/1) ... [2022-03-20 07:28:22,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794b542f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22, skipping insertion in model container [2022-03-20 07:28:22,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:28:22" (1/1) ... [2022-03-20 07:28:22,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 07:28:22,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 07:28:22,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2022-03-20 07:28:22,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 07:28:22,797 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 07:28:22,809 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2022-03-20 07:28:22,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 07:28:22,818 INFO L208 MainTranslator]: Completed translation [2022-03-20 07:28:22,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22 WrapperNode [2022-03-20 07:28:22,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 07:28:22,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 07:28:22,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 07:28:22,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 07:28:22,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22" (1/1) ... [2022-03-20 07:28:22,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22" (1/1) ... [2022-03-20 07:28:22,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22" (1/1) ... [2022-03-20 07:28:22,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22" (1/1) ... [2022-03-20 07:28:22,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22" (1/1) ... [2022-03-20 07:28:22,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22" (1/1) ... [2022-03-20 07:28:22,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22" (1/1) ... [2022-03-20 07:28:22,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 07:28:22,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 07:28:22,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 07:28:22,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 07:28:22,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22" (1/1) ... [2022-03-20 07:28:22,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 07:28:22,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:28:22,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 07:28:22,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 07:28:22,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 07:28:22,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 07:28:22,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 07:28:22,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 07:28:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 07:28:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 07:28:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 07:28:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 07:28:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 07:28:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 07:28:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 07:28:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 07:28:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 07:28:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 07:28:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 07:28:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 07:28:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 07:28:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 07:28:22,950 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 07:28:22,951 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 07:28:23,089 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 07:28:23,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 07:28:23,093 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 07:28:23,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:28:23 BoogieIcfgContainer [2022-03-20 07:28:23,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 07:28:23,095 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 07:28:23,096 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 07:28:23,096 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 07:28:23,098 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:28:23" (1/1) ... [2022-03-20 07:28:23,100 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 07:28:23,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 07:28:23 BasicIcfg [2022-03-20 07:28:23,123 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 07:28:23,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 07:28:23,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 07:28:23,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 07:28:23,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 07:28:22" (1/4) ... [2022-03-20 07:28:23,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d116e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:28:23, skipping insertion in model container [2022-03-20 07:28:23,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:28:22" (2/4) ... [2022-03-20 07:28:23,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d116e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:28:23, skipping insertion in model container [2022-03-20 07:28:23,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:28:23" (3/4) ... [2022-03-20 07:28:23,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d116e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 07:28:23, skipping insertion in model container [2022-03-20 07:28:23,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 07:28:23" (4/4) ... [2022-03-20 07:28:23,129 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.cJordan [2022-03-20 07:28:23,132 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 07:28:23,133 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 07:28:23,197 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 07:28:23,202 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 [2022-03-20 07:28:23,202 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 07:28:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 07:28:23,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-20 07:28:23,225 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:23,226 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:23,226 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:23,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 472059503, now seen corresponding path program 1 times [2022-03-20 07:28:23,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:23,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509092115] [2022-03-20 07:28:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:23,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:28:23,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:23,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509092115] [2022-03-20 07:28:23,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509092115] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:23,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:23,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125578705] [2022-03-20 07:28:23,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:23,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:23,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:23,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:23,435 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:23,538 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-03-20 07:28:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-03-20 07:28:23,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:23,547 INFO L225 Difference]: With dead ends: 47 [2022-03-20 07:28:23,547 INFO L226 Difference]: Without dead ends: 39 [2022-03-20 07:28:23,549 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:23,553 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 79 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:23,554 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 44 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 07:28:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-20 07:28:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-03-20 07:28:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-03-20 07:28:23,585 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 9 [2022-03-20 07:28:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:23,586 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-03-20 07:28:23,586 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-03-20 07:28:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 07:28:23,587 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:23,587 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:23,588 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 07:28:23,588 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:23,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:23,590 INFO L85 PathProgramCache]: Analyzing trace with hash -493282618, now seen corresponding path program 1 times [2022-03-20 07:28:23,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:23,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412580221] [2022-03-20 07:28:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:28:23,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:23,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412580221] [2022-03-20 07:28:23,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412580221] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:23,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:23,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:23,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591366268] [2022-03-20 07:28:23,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:23,671 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:23,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:23,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:23,672 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:23,731 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2022-03-20 07:28:23,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:23,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-20 07:28:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:23,734 INFO L225 Difference]: With dead ends: 53 [2022-03-20 07:28:23,734 INFO L226 Difference]: Without dead ends: 53 [2022-03-20 07:28:23,737 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:23,738 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 40 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:23,738 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 43 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 07:28:23,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-20 07:28:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2022-03-20 07:28:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-03-20 07:28:23,751 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 14 [2022-03-20 07:28:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:23,752 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-03-20 07:28:23,752 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-03-20 07:28:23,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 07:28:23,755 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:23,756 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:23,760 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 07:28:23,760 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:23,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:23,763 INFO L85 PathProgramCache]: Analyzing trace with hash -493252827, now seen corresponding path program 1 times [2022-03-20 07:28:23,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:23,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39018538] [2022-03-20 07:28:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:23,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:28:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:23,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39018538] [2022-03-20 07:28:23,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39018538] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:23,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:23,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:23,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384019430] [2022-03-20 07:28:23,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:23,823 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:23,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:23,824 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:23,885 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-03-20 07:28:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:23,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-20 07:28:23,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:23,887 INFO L225 Difference]: With dead ends: 67 [2022-03-20 07:28:23,887 INFO L226 Difference]: Without dead ends: 67 [2022-03-20 07:28:23,888 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:23,892 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:23,893 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 07:28:23,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-20 07:28:23,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-03-20 07:28:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 63 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:23,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2022-03-20 07:28:23,906 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 14 [2022-03-20 07:28:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:23,907 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2022-03-20 07:28:23,907 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2022-03-20 07:28:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-20 07:28:23,908 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:23,908 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:23,909 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 07:28:23,909 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1278160632, now seen corresponding path program 1 times [2022-03-20 07:28:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:23,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714158013] [2022-03-20 07:28:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:23,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 07:28:23,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:23,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714158013] [2022-03-20 07:28:23,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714158013] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:23,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:23,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106517316] [2022-03-20 07:28:23,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:23,975 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:23,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:23,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:23,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:23,976 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:24,034 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2022-03-20 07:28:24,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:24,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-03-20 07:28:24,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:24,037 INFO L225 Difference]: With dead ends: 89 [2022-03-20 07:28:24,037 INFO L226 Difference]: Without dead ends: 89 [2022-03-20 07:28:24,037 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:24,042 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 51 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:24,043 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 53 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 07:28:24,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-03-20 07:28:24,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2022-03-20 07:28:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 83 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2022-03-20 07:28:24,056 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 21 [2022-03-20 07:28:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:24,057 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2022-03-20 07:28:24,057 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2022-03-20 07:28:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-20 07:28:24,057 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:24,057 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:24,057 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 07:28:24,058 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:24,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:24,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1498444954, now seen corresponding path program 1 times [2022-03-20 07:28:24,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:24,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740372181] [2022-03-20 07:28:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:24,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:24,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 07:28:24,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740372181] [2022-03-20 07:28:24,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740372181] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:24,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:24,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:24,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714824361] [2022-03-20 07:28:24,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:24,092 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:24,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:24,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:24,092 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:24,126 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2022-03-20 07:28:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:24,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-03-20 07:28:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:24,127 INFO L225 Difference]: With dead ends: 86 [2022-03-20 07:28:24,127 INFO L226 Difference]: Without dead ends: 67 [2022-03-20 07:28:24,127 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:24,128 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:24,128 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 41 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 07:28:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-20 07:28:24,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2022-03-20 07:28:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2022-03-20 07:28:24,130 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 24 [2022-03-20 07:28:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:24,130 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2022-03-20 07:28:24,130 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2022-03-20 07:28:24,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 07:28:24,131 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:28:24,131 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:28:24,131 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 07:28:24,131 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:28:24,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:28:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1101537560, now seen corresponding path program 1 times [2022-03-20 07:28:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:28:24,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868829365] [2022-03-20 07:28:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:28:24,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:28:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:28:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:28:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-20 07:28:24,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:28:24,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868829365] [2022-03-20 07:28:24,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868829365] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:28:24,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:28:24,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 07:28:24,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595389158] [2022-03-20 07:28:24,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:28:24,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 07:28:24,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:28:24,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 07:28:24,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 07:28:24,161 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:28:24,190 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2022-03-20 07:28:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 07:28:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-03-20 07:28:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:28:24,191 INFO L225 Difference]: With dead ends: 57 [2022-03-20 07:28:24,191 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 07:28:24,191 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:28:24,192 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:28:24,192 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 40 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 07:28:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 07:28:24,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 07:28:24,192 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) [2022-03-20 07:28:24,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 07:28:24,193 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2022-03-20 07:28:24,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:28:24,193 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 07:28:24,193 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 07:28:24,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 07:28:24,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 07:28:24,195 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 07:28:24,195 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 07:28:24,197 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-03-20 07:28:24,198 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 07:28:24,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 07:28:24 BasicIcfg [2022-03-20 07:28:24,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 07:28:24,200 INFO L158 Benchmark]: Toolchain (without parser) took 1572.69ms. Allocated memory was 187.7MB in the beginning and 270.5MB in the end (delta: 82.8MB). Free memory was 132.3MB in the beginning and 221.5MB in the end (delta: -89.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 07:28:24,200 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 07:28:24,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.61ms. Allocated memory was 187.7MB in the beginning and 270.5MB in the end (delta: 82.8MB). Free memory was 132.0MB in the beginning and 242.8MB in the end (delta: -110.8MB). Peak memory consumption was 6.0MB. Max. memory is 8.0GB. [2022-03-20 07:28:24,201 INFO L158 Benchmark]: Boogie Preprocessor took 19.75ms. Allocated memory is still 270.5MB. Free memory was 242.4MB in the beginning and 241.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 07:28:24,201 INFO L158 Benchmark]: RCFGBuilder took 254.91ms. Allocated memory is still 270.5MB. Free memory was 240.9MB in the beginning and 230.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 07:28:24,201 INFO L158 Benchmark]: IcfgTransformer took 27.28ms. Allocated memory is still 270.5MB. Free memory was 230.5MB in the beginning and 229.1MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 07:28:24,201 INFO L158 Benchmark]: TraceAbstraction took 1075.95ms. Allocated memory is still 270.5MB. Free memory was 228.8MB in the beginning and 221.5MB in the end (delta: 7.2MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. [2022-03-20 07:28:24,202 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 187.7MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.61ms. Allocated memory was 187.7MB in the beginning and 270.5MB in the end (delta: 82.8MB). Free memory was 132.0MB in the beginning and 242.8MB in the end (delta: -110.8MB). Peak memory consumption was 6.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.75ms. Allocated memory is still 270.5MB. Free memory was 242.4MB in the beginning and 241.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 254.91ms. Allocated memory is still 270.5MB. Free memory was 240.9MB in the beginning and 230.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 27.28ms. Allocated memory is still 270.5MB. Free memory was 230.5MB in the beginning and 229.1MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1075.95ms. Allocated memory is still 270.5MB. Free memory was 228.8MB in the beginning and 221.5MB in the end (delta: 7.2MB). Peak memory consumption was 7.6MB. 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: 150]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 291 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 291 mSDsluCounter, 272 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 228 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 42/42 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! [2022-03-20 07:28:24,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...