/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/locks/test_locks_7.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-14 23:28:43,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-14 23:28:43,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-14 23:28:43,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-14 23:28:43,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-14 23:28:43,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-14 23:28:43,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-14 23:28:43,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-14 23:28:43,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-14 23:28:43,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-14 23:28:43,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-14 23:28:43,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-14 23:28:43,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-14 23:28:43,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-14 23:28:43,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-14 23:28:43,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-14 23:28:43,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-14 23:28:43,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-14 23:28:43,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-14 23:28:43,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-14 23:28:43,849 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-14 23:28:43,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-14 23:28:43,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-14 23:28:43,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-14 23:28:43,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-14 23:28:43,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-14 23:28:43,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-14 23:28:43,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-14 23:28:43,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-14 23:28:43,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-14 23:28:43,878 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-14 23:28:43,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-14 23:28:43,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-14 23:28:43,879 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-14 23:28:43,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-14 23:28:43,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-14 23:28:43,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-14 23:28:43,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-14 23:28:43,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-14 23:28:43,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-14 23:28:43,881 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-14 23:28:43,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-14 23:28:43,881 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-14 23:28:43,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-14 23:28:43,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-14 23:28:43,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-14 23:28:43,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-14 23:28:43,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-14 23:28:43,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 23:28:43,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-14 23:28:43,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-14 23:28:43,883 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-14 23:28:43,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-14 23:28:44,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-14 23:28:44,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-14 23:28:44,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-14 23:28:44,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-14 23:28:44,128 INFO L275 PluginConnector]: CDTParser initialized [2022-04-14 23:28:44,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_7.c [2022-04-14 23:28:44,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738538330/7f34cf64c3de423cb68f304a1ebe12a7/FLAG3561fe8cd [2022-04-14 23:28:44,571 INFO L306 CDTParser]: Found 1 translation units. [2022-04-14 23:28:44,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_7.c [2022-04-14 23:28:44,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738538330/7f34cf64c3de423cb68f304a1ebe12a7/FLAG3561fe8cd [2022-04-14 23:28:44,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738538330/7f34cf64c3de423cb68f304a1ebe12a7 [2022-04-14 23:28:44,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-14 23:28:44,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-14 23:28:44,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-14 23:28:44,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-14 23:28:44,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-14 23:28:44,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 11:28:44" (1/1) ... [2022-04-14 23:28:44,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304a293b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44, skipping insertion in model container [2022-04-14 23:28:44,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 11:28:44" (1/1) ... [2022-04-14 23:28:44,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-14 23:28:44,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-14 23:28:44,828 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_7.c[2881,2894] [2022-04-14 23:28:44,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 23:28:44,838 INFO L203 MainTranslator]: Completed pre-run [2022-04-14 23:28:44,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_7.c[2881,2894] [2022-04-14 23:28:44,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 23:28:44,868 INFO L208 MainTranslator]: Completed translation [2022-04-14 23:28:44,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44 WrapperNode [2022-04-14 23:28:44,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-14 23:28:44,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-14 23:28:44,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-14 23:28:44,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-14 23:28:44,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44" (1/1) ... [2022-04-14 23:28:44,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44" (1/1) ... [2022-04-14 23:28:44,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44" (1/1) ... [2022-04-14 23:28:44,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44" (1/1) ... [2022-04-14 23:28:44,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44" (1/1) ... [2022-04-14 23:28:44,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44" (1/1) ... [2022-04-14 23:28:44,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44" (1/1) ... [2022-04-14 23:28:44,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-14 23:28:44,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-14 23:28:44,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-14 23:28:44,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-14 23:28:44,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44" (1/1) ... [2022-04-14 23:28:44,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 23:28:44,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 23:28:44,932 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) [2022-04-14 23:28:44,939 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 [2022-04-14 23:28:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-14 23:28:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-14 23:28:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-14 23:28:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-14 23:28:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-14 23:28:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-14 23:28:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-14 23:28:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-14 23:28:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-14 23:28:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-14 23:28:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-14 23:28:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-14 23:28:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-14 23:28:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-14 23:28:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-14 23:28:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-14 23:28:45,016 INFO L234 CfgBuilder]: Building ICFG [2022-04-14 23:28:45,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-14 23:28:45,164 INFO L275 CfgBuilder]: Performing block encoding [2022-04-14 23:28:45,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-14 23:28:45,170 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-14 23:28:45,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 11:28:45 BoogieIcfgContainer [2022-04-14 23:28:45,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-14 23:28:45,172 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-14 23:28:45,172 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-14 23:28:45,173 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-14 23:28:45,176 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 11:28:45" (1/1) ... [2022-04-14 23:28:45,177 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-14 23:28:45,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 11:28:45 BasicIcfg [2022-04-14 23:28:45,208 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-14 23:28:45,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-14 23:28:45,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-14 23:28:45,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-14 23:28:45,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 11:28:44" (1/4) ... [2022-04-14 23:28:45,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5b41ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 11:28:45, skipping insertion in model container [2022-04-14 23:28:45,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:44" (2/4) ... [2022-04-14 23:28:45,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5b41ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 11:28:45, skipping insertion in model container [2022-04-14 23:28:45,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 11:28:45" (3/4) ... [2022-04-14 23:28:45,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5b41ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 11:28:45, skipping insertion in model container [2022-04-14 23:28:45,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 11:28:45" (4/4) ... [2022-04-14 23:28:45,214 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_7.cJordan [2022-04-14 23:28:45,218 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-14 23:28:45,218 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-14 23:28:45,278 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-14 23:28:45,283 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 [2022-04-14 23:28:45,284 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-14 23:28:45,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 31 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 23:28:45,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-14 23:28:45,322 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:45,323 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:45,323 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:45,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:45,332 INFO L85 PathProgramCache]: Analyzing trace with hash -172104918, now seen corresponding path program 1 times [2022-04-14 23:28:45,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:45,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080834138] [2022-04-14 23:28:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:45,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:45,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:45,618 INFO L290 TraceCheckUtils]: 0: Hoare triple {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {39#true} is VALID [2022-04-14 23:28:45,618 INFO L290 TraceCheckUtils]: 1: Hoare triple {39#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {39#true} is VALID [2022-04-14 23:28:45,619 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {39#true} {39#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {39#true} is VALID [2022-04-14 23:28:45,622 INFO L272 TraceCheckUtils]: 0: Hoare triple {39#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:45,623 INFO L290 TraceCheckUtils]: 1: Hoare triple {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {39#true} is VALID [2022-04-14 23:28:45,623 INFO L290 TraceCheckUtils]: 2: Hoare triple {39#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {39#true} is VALID [2022-04-14 23:28:45,624 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {39#true} {39#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {39#true} is VALID [2022-04-14 23:28:45,624 INFO L272 TraceCheckUtils]: 4: Hoare triple {39#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {39#true} is VALID [2022-04-14 23:28:45,624 INFO L290 TraceCheckUtils]: 5: Hoare triple {39#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {39#true} is VALID [2022-04-14 23:28:45,625 INFO L290 TraceCheckUtils]: 6: Hoare triple {39#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {39#true} is VALID [2022-04-14 23:28:45,625 INFO L290 TraceCheckUtils]: 7: Hoare triple {39#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {39#true} is VALID [2022-04-14 23:28:45,628 INFO L290 TraceCheckUtils]: 8: Hoare triple {39#true} [165] L53-->L53-2: Formula: (and (= v_main_~lk1~0_3 1) (not (= v_main_~p1~0_2 0))) InVars {main_~p1~0=v_main_~p1~0_2} OutVars{main_~p1~0=v_main_~p1~0_2, main_~lk1~0=v_main_~lk1~0_3} AuxVars[] AssignedVars[main_~lk1~0] {44#(= main_~lk1~0 1)} is VALID [2022-04-14 23:28:45,628 INFO L290 TraceCheckUtils]: 9: Hoare triple {44#(= main_~lk1~0 1)} [167] L53-2-->L57-1: Formula: (and (= v_main_~lk2~0_3 1) (not (= v_main_~p2~0_2 0))) InVars {main_~p2~0=v_main_~p2~0_2} OutVars{main_~lk2~0=v_main_~lk2~0_3, main_~p2~0=v_main_~p2~0_2} AuxVars[] AssignedVars[main_~lk2~0] {44#(= main_~lk1~0 1)} is VALID [2022-04-14 23:28:45,630 INFO L290 TraceCheckUtils]: 10: Hoare triple {44#(= main_~lk1~0 1)} [169] L57-1-->L61-1: Formula: (and (not (= v_main_~p3~0_2 0)) (= v_main_~lk3~0_3 1)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2, main_~lk3~0=v_main_~lk3~0_3} AuxVars[] AssignedVars[main_~lk3~0] {44#(= main_~lk1~0 1)} is VALID [2022-04-14 23:28:45,630 INFO L290 TraceCheckUtils]: 11: Hoare triple {44#(= main_~lk1~0 1)} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {44#(= main_~lk1~0 1)} is VALID [2022-04-14 23:28:45,631 INFO L290 TraceCheckUtils]: 12: Hoare triple {44#(= main_~lk1~0 1)} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {44#(= main_~lk1~0 1)} is VALID [2022-04-14 23:28:45,631 INFO L290 TraceCheckUtils]: 13: Hoare triple {44#(= main_~lk1~0 1)} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {44#(= main_~lk1~0 1)} is VALID [2022-04-14 23:28:45,633 INFO L290 TraceCheckUtils]: 14: Hoare triple {44#(= main_~lk1~0 1)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {44#(= main_~lk1~0 1)} is VALID [2022-04-14 23:28:45,634 INFO L290 TraceCheckUtils]: 15: Hoare triple {44#(= main_~lk1~0 1)} [179] L77-1-->L84: Formula: (not (= v_main_~p1~0_4 0)) InVars {main_~p1~0=v_main_~p1~0_4} OutVars{main_~p1~0=v_main_~p1~0_4} AuxVars[] AssignedVars[] {44#(= main_~lk1~0 1)} is VALID [2022-04-14 23:28:45,634 INFO L290 TraceCheckUtils]: 16: Hoare triple {44#(= main_~lk1~0 1)} [181] L84-->L114-1: Formula: (not (= v_main_~lk1~0_4 1)) InVars {main_~lk1~0=v_main_~lk1~0_4} OutVars{main_~lk1~0=v_main_~lk1~0_4} AuxVars[] AssignedVars[] {40#false} is VALID [2022-04-14 23:28:45,635 INFO L290 TraceCheckUtils]: 17: Hoare triple {40#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {40#false} is VALID [2022-04-14 23:28:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:45,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:45,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080834138] [2022-04-14 23:28:45,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080834138] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:45,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:45,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:45,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409785998] [2022-04-14 23:28:45,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2022-04-14 23:28:45,649 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:45,651 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:45,686 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:45,687 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:45,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:45,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:45,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:45,717 INFO L87 Difference]: Start difference. First operand has 36 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 31 states have internal predecessors, (55), 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 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:45,973 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2022-04-14 23:28:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:45,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2022-04-14 23:28:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2022-04-14 23:28:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2022-04-14 23:28:45,999 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 109 transitions. [2022-04-14 23:28:46,107 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 109 edges. 109 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:46,119 INFO L225 Difference]: With dead ends: 63 [2022-04-14 23:28:46,119 INFO L226 Difference]: Without dead ends: 55 [2022-04-14 23:28:46,121 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:46,127 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 123 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:46,128 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 71 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-14 23:28:46,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-14 23:28:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 39. [2022-04-14 23:28:46,154 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:46,155 INFO L82 GeneralOperation]: Start isEquivalent. First operand 55 states. Second operand has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,155 INFO L74 IsIncluded]: Start isIncluded. First operand 55 states. Second operand has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,156 INFO L87 Difference]: Start difference. First operand 55 states. Second operand has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:46,160 INFO L93 Difference]: Finished difference Result 55 states and 93 transitions. [2022-04-14 23:28:46,161 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 93 transitions. [2022-04-14 23:28:46,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:46,161 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:46,162 INFO L74 IsIncluded]: Start isIncluded. First operand has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 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) Second operand 55 states. [2022-04-14 23:28:46,162 INFO L87 Difference]: Start difference. First operand has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 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) Second operand 55 states. [2022-04-14 23:28:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:46,166 INFO L93 Difference]: Finished difference Result 55 states and 93 transitions. [2022-04-14 23:28:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 93 transitions. [2022-04-14 23:28:46,167 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:46,167 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:46,167 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:46,168 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 66 transitions. [2022-04-14 23:28:46,171 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 66 transitions. Word has length 18 [2022-04-14 23:28:46,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:46,171 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 66 transitions. [2022-04-14 23:28:46,171 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 66 transitions. [2022-04-14 23:28:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-14 23:28:46,172 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:46,172 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:46,172 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-14 23:28:46,172 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:46,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash -368618423, now seen corresponding path program 1 times [2022-04-14 23:28:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:46,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636429952] [2022-04-14 23:28:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:46,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:46,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:46,241 INFO L290 TraceCheckUtils]: 0: Hoare triple {269#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {263#true} is VALID [2022-04-14 23:28:46,242 INFO L290 TraceCheckUtils]: 1: Hoare triple {263#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {263#true} is VALID [2022-04-14 23:28:46,242 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {263#true} {263#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {263#true} is VALID [2022-04-14 23:28:46,243 INFO L272 TraceCheckUtils]: 0: Hoare triple {263#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {269#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:46,243 INFO L290 TraceCheckUtils]: 1: Hoare triple {269#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {263#true} is VALID [2022-04-14 23:28:46,243 INFO L290 TraceCheckUtils]: 2: Hoare triple {263#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {263#true} is VALID [2022-04-14 23:28:46,243 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {263#true} {263#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {263#true} is VALID [2022-04-14 23:28:46,244 INFO L272 TraceCheckUtils]: 4: Hoare triple {263#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {263#true} is VALID [2022-04-14 23:28:46,244 INFO L290 TraceCheckUtils]: 5: Hoare triple {263#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {263#true} is VALID [2022-04-14 23:28:46,244 INFO L290 TraceCheckUtils]: 6: Hoare triple {263#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {263#true} is VALID [2022-04-14 23:28:46,244 INFO L290 TraceCheckUtils]: 7: Hoare triple {263#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {263#true} is VALID [2022-04-14 23:28:46,245 INFO L290 TraceCheckUtils]: 8: Hoare triple {263#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {268#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:46,245 INFO L290 TraceCheckUtils]: 9: Hoare triple {268#(= main_~p1~0 0)} [167] L53-2-->L57-1: Formula: (and (= v_main_~lk2~0_3 1) (not (= v_main_~p2~0_2 0))) InVars {main_~p2~0=v_main_~p2~0_2} OutVars{main_~lk2~0=v_main_~lk2~0_3, main_~p2~0=v_main_~p2~0_2} AuxVars[] AssignedVars[main_~lk2~0] {268#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:46,247 INFO L290 TraceCheckUtils]: 10: Hoare triple {268#(= main_~p1~0 0)} [169] L57-1-->L61-1: Formula: (and (not (= v_main_~p3~0_2 0)) (= v_main_~lk3~0_3 1)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2, main_~lk3~0=v_main_~lk3~0_3} AuxVars[] AssignedVars[main_~lk3~0] {268#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:46,247 INFO L290 TraceCheckUtils]: 11: Hoare triple {268#(= main_~p1~0 0)} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {268#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:46,248 INFO L290 TraceCheckUtils]: 12: Hoare triple {268#(= main_~p1~0 0)} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {268#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:46,248 INFO L290 TraceCheckUtils]: 13: Hoare triple {268#(= main_~p1~0 0)} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {268#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:46,249 INFO L290 TraceCheckUtils]: 14: Hoare triple {268#(= main_~p1~0 0)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {268#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:46,250 INFO L290 TraceCheckUtils]: 15: Hoare triple {268#(= main_~p1~0 0)} [179] L77-1-->L84: Formula: (not (= v_main_~p1~0_4 0)) InVars {main_~p1~0=v_main_~p1~0_4} OutVars{main_~p1~0=v_main_~p1~0_4} AuxVars[] AssignedVars[] {264#false} is VALID [2022-04-14 23:28:46,250 INFO L290 TraceCheckUtils]: 16: Hoare triple {264#false} [181] L84-->L114-1: Formula: (not (= v_main_~lk1~0_4 1)) InVars {main_~lk1~0=v_main_~lk1~0_4} OutVars{main_~lk1~0=v_main_~lk1~0_4} AuxVars[] AssignedVars[] {264#false} is VALID [2022-04-14 23:28:46,250 INFO L290 TraceCheckUtils]: 17: Hoare triple {264#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {264#false} is VALID [2022-04-14 23:28:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:46,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:46,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636429952] [2022-04-14 23:28:46,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636429952] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:46,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:46,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:46,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724455153] [2022-04-14 23:28:46,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:46,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2022-04-14 23:28:46,253 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:46,253 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,268 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:46,269 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:46,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:46,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:46,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:46,270 INFO L87 Difference]: Start difference. First operand 39 states and 66 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:46,448 INFO L93 Difference]: Finished difference Result 55 states and 91 transitions. [2022-04-14 23:28:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:46,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2022-04-14 23:28:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2022-04-14 23:28:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2022-04-14 23:28:46,455 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 93 transitions. [2022-04-14 23:28:46,551 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 93 edges. 93 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:46,553 INFO L225 Difference]: With dead ends: 55 [2022-04-14 23:28:46,553 INFO L226 Difference]: Without dead ends: 55 [2022-04-14 23:28:46,553 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:46,555 INFO L913 BasicCegarLoop]: 64 mSDtfsCounter, 103 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:46,555 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 71 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-14 23:28:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2022-04-14 23:28:46,560 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:46,560 INFO L82 GeneralOperation]: Start isEquivalent. First operand 55 states. Second operand has 53 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 49 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,560 INFO L74 IsIncluded]: Start isIncluded. First operand 55 states. Second operand has 53 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 49 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,561 INFO L87 Difference]: Start difference. First operand 55 states. Second operand has 53 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 49 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:46,569 INFO L93 Difference]: Finished difference Result 55 states and 91 transitions. [2022-04-14 23:28:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 91 transitions. [2022-04-14 23:28:46,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:46,569 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:46,570 INFO L74 IsIncluded]: Start isIncluded. First operand has 53 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 49 states have internal predecessors, (87), 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) Second operand 55 states. [2022-04-14 23:28:46,570 INFO L87 Difference]: Start difference. First operand has 53 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 49 states have internal predecessors, (87), 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) Second operand 55 states. [2022-04-14 23:28:46,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:46,572 INFO L93 Difference]: Finished difference Result 55 states and 91 transitions. [2022-04-14 23:28:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 91 transitions. [2022-04-14 23:28:46,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:46,573 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:46,573 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:46,573 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 49 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 90 transitions. [2022-04-14 23:28:46,576 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 90 transitions. Word has length 18 [2022-04-14 23:28:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:46,576 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 90 transitions. [2022-04-14 23:28:46,576 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 90 transitions. [2022-04-14 23:28:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-14 23:28:46,577 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:46,577 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:46,577 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-14 23:28:46,577 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:46,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1040253202, now seen corresponding path program 1 times [2022-04-14 23:28:46,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:46,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265943549] [2022-04-14 23:28:46,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:46,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:46,678 INFO L290 TraceCheckUtils]: 0: Hoare triple {499#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {493#true} is VALID [2022-04-14 23:28:46,678 INFO L290 TraceCheckUtils]: 1: Hoare triple {493#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {493#true} is VALID [2022-04-14 23:28:46,679 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {493#true} {493#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {493#true} is VALID [2022-04-14 23:28:46,680 INFO L272 TraceCheckUtils]: 0: Hoare triple {493#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {499#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:46,680 INFO L290 TraceCheckUtils]: 1: Hoare triple {499#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {493#true} is VALID [2022-04-14 23:28:46,680 INFO L290 TraceCheckUtils]: 2: Hoare triple {493#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {493#true} is VALID [2022-04-14 23:28:46,680 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {493#true} {493#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {493#true} is VALID [2022-04-14 23:28:46,680 INFO L272 TraceCheckUtils]: 4: Hoare triple {493#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {493#true} is VALID [2022-04-14 23:28:46,681 INFO L290 TraceCheckUtils]: 5: Hoare triple {493#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {493#true} is VALID [2022-04-14 23:28:46,681 INFO L290 TraceCheckUtils]: 6: Hoare triple {493#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {493#true} is VALID [2022-04-14 23:28:46,681 INFO L290 TraceCheckUtils]: 7: Hoare triple {493#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {493#true} is VALID [2022-04-14 23:28:46,682 INFO L290 TraceCheckUtils]: 8: Hoare triple {493#true} [165] L53-->L53-2: Formula: (and (= v_main_~lk1~0_3 1) (not (= v_main_~p1~0_2 0))) InVars {main_~p1~0=v_main_~p1~0_2} OutVars{main_~p1~0=v_main_~p1~0_2, main_~lk1~0=v_main_~lk1~0_3} AuxVars[] AssignedVars[main_~lk1~0] {498#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:46,683 INFO L290 TraceCheckUtils]: 9: Hoare triple {498#(not (= main_~p1~0 0))} [167] L53-2-->L57-1: Formula: (and (= v_main_~lk2~0_3 1) (not (= v_main_~p2~0_2 0))) InVars {main_~p2~0=v_main_~p2~0_2} OutVars{main_~lk2~0=v_main_~lk2~0_3, main_~p2~0=v_main_~p2~0_2} AuxVars[] AssignedVars[main_~lk2~0] {498#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:46,683 INFO L290 TraceCheckUtils]: 10: Hoare triple {498#(not (= main_~p1~0 0))} [169] L57-1-->L61-1: Formula: (and (not (= v_main_~p3~0_2 0)) (= v_main_~lk3~0_3 1)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2, main_~lk3~0=v_main_~lk3~0_3} AuxVars[] AssignedVars[main_~lk3~0] {498#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:46,686 INFO L290 TraceCheckUtils]: 11: Hoare triple {498#(not (= main_~p1~0 0))} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {498#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:46,686 INFO L290 TraceCheckUtils]: 12: Hoare triple {498#(not (= main_~p1~0 0))} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {498#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:46,687 INFO L290 TraceCheckUtils]: 13: Hoare triple {498#(not (= main_~p1~0 0))} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {498#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:46,687 INFO L290 TraceCheckUtils]: 14: Hoare triple {498#(not (= main_~p1~0 0))} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {498#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:46,688 INFO L290 TraceCheckUtils]: 15: Hoare triple {498#(not (= main_~p1~0 0))} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {494#false} is VALID [2022-04-14 23:28:46,688 INFO L290 TraceCheckUtils]: 16: Hoare triple {494#false} [183] L83-1-->L89: Formula: (not (= v_main_~p2~0_4 0)) InVars {main_~p2~0=v_main_~p2~0_4} OutVars{main_~p2~0=v_main_~p2~0_4} AuxVars[] AssignedVars[] {494#false} is VALID [2022-04-14 23:28:46,688 INFO L290 TraceCheckUtils]: 17: Hoare triple {494#false} [187] L89-->L114-1: Formula: (not (= v_main_~lk2~0_4 1)) InVars {main_~lk2~0=v_main_~lk2~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_4} AuxVars[] AssignedVars[] {494#false} is VALID [2022-04-14 23:28:46,689 INFO L290 TraceCheckUtils]: 18: Hoare triple {494#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {494#false} is VALID [2022-04-14 23:28:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:46,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:46,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265943549] [2022-04-14 23:28:46,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265943549] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:46,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:46,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:46,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233072570] [2022-04-14 23:28:46,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:46,690 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 19 [2022-04-14 23:28:46,691 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:46,691 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-14 23:28:46,709 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:46,709 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:46,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:46,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:46,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:46,710 INFO L87 Difference]: Start difference. First operand 53 states and 90 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) [2022-04-14 23:28:46,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:46,857 INFO L93 Difference]: Finished difference Result 58 states and 93 transitions. [2022-04-14 23:28:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:46,857 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 19 [2022-04-14 23:28:46,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 23:28:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2022-04-14 23:28:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 23:28:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2022-04-14 23:28:46,861 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 92 transitions. [2022-04-14 23:28:46,937 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 92 edges. 92 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:46,942 INFO L225 Difference]: With dead ends: 58 [2022-04-14 23:28:46,942 INFO L226 Difference]: Without dead ends: 58 [2022-04-14 23:28:46,943 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:46,949 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 92 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:46,949 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 83 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-04-14 23:28:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-04-14 23:28:46,953 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:46,953 INFO L82 GeneralOperation]: Start isEquivalent. First operand 58 states. Second operand has 56 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,954 INFO L74 IsIncluded]: Start isIncluded. First operand 58 states. Second operand has 56 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,954 INFO L87 Difference]: Start difference. First operand 58 states. Second operand has 56 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:46,956 INFO L93 Difference]: Finished difference Result 58 states and 93 transitions. [2022-04-14 23:28:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 93 transitions. [2022-04-14 23:28:46,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:46,957 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:46,957 INFO L74 IsIncluded]: Start isIncluded. First operand has 56 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 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) Second operand 58 states. [2022-04-14 23:28:46,958 INFO L87 Difference]: Start difference. First operand has 56 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 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) Second operand 58 states. [2022-04-14 23:28:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:46,963 INFO L93 Difference]: Finished difference Result 58 states and 93 transitions. [2022-04-14 23:28:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 93 transitions. [2022-04-14 23:28:46,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:46,970 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:46,970 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:46,970 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 92 transitions. [2022-04-14 23:28:46,974 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 92 transitions. Word has length 19 [2022-04-14 23:28:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:46,974 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 92 transitions. [2022-04-14 23:28:46,975 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) [2022-04-14 23:28:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 92 transitions. [2022-04-14 23:28:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-14 23:28:46,976 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:46,976 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:46,976 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-14 23:28:46,976 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:46,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:46,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1457762735, now seen corresponding path program 1 times [2022-04-14 23:28:46,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:46,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015057950] [2022-04-14 23:28:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:46,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:47,058 INFO L290 TraceCheckUtils]: 0: Hoare triple {741#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {735#true} is VALID [2022-04-14 23:28:47,059 INFO L290 TraceCheckUtils]: 1: Hoare triple {735#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {735#true} is VALID [2022-04-14 23:28:47,059 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {735#true} {735#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {735#true} is VALID [2022-04-14 23:28:47,059 INFO L272 TraceCheckUtils]: 0: Hoare triple {735#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {741#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:47,060 INFO L290 TraceCheckUtils]: 1: Hoare triple {741#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {735#true} is VALID [2022-04-14 23:28:47,060 INFO L290 TraceCheckUtils]: 2: Hoare triple {735#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {735#true} is VALID [2022-04-14 23:28:47,060 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {735#true} {735#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {735#true} is VALID [2022-04-14 23:28:47,060 INFO L272 TraceCheckUtils]: 4: Hoare triple {735#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {735#true} is VALID [2022-04-14 23:28:47,061 INFO L290 TraceCheckUtils]: 5: Hoare triple {735#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {735#true} is VALID [2022-04-14 23:28:47,061 INFO L290 TraceCheckUtils]: 6: Hoare triple {735#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {735#true} is VALID [2022-04-14 23:28:47,063 INFO L290 TraceCheckUtils]: 7: Hoare triple {735#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {735#true} is VALID [2022-04-14 23:28:47,064 INFO L290 TraceCheckUtils]: 8: Hoare triple {735#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {735#true} is VALID [2022-04-14 23:28:47,064 INFO L290 TraceCheckUtils]: 9: Hoare triple {735#true} [167] L53-2-->L57-1: Formula: (and (= v_main_~lk2~0_3 1) (not (= v_main_~p2~0_2 0))) InVars {main_~p2~0=v_main_~p2~0_2} OutVars{main_~lk2~0=v_main_~lk2~0_3, main_~p2~0=v_main_~p2~0_2} AuxVars[] AssignedVars[main_~lk2~0] {740#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:47,065 INFO L290 TraceCheckUtils]: 10: Hoare triple {740#(= main_~lk2~0 1)} [169] L57-1-->L61-1: Formula: (and (not (= v_main_~p3~0_2 0)) (= v_main_~lk3~0_3 1)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2, main_~lk3~0=v_main_~lk3~0_3} AuxVars[] AssignedVars[main_~lk3~0] {740#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:47,065 INFO L290 TraceCheckUtils]: 11: Hoare triple {740#(= main_~lk2~0 1)} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {740#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:47,065 INFO L290 TraceCheckUtils]: 12: Hoare triple {740#(= main_~lk2~0 1)} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {740#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:47,066 INFO L290 TraceCheckUtils]: 13: Hoare triple {740#(= main_~lk2~0 1)} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {740#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:47,066 INFO L290 TraceCheckUtils]: 14: Hoare triple {740#(= main_~lk2~0 1)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {740#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:47,067 INFO L290 TraceCheckUtils]: 15: Hoare triple {740#(= main_~lk2~0 1)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {740#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:47,067 INFO L290 TraceCheckUtils]: 16: Hoare triple {740#(= main_~lk2~0 1)} [183] L83-1-->L89: Formula: (not (= v_main_~p2~0_4 0)) InVars {main_~p2~0=v_main_~p2~0_4} OutVars{main_~p2~0=v_main_~p2~0_4} AuxVars[] AssignedVars[] {740#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:47,068 INFO L290 TraceCheckUtils]: 17: Hoare triple {740#(= main_~lk2~0 1)} [187] L89-->L114-1: Formula: (not (= v_main_~lk2~0_4 1)) InVars {main_~lk2~0=v_main_~lk2~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_4} AuxVars[] AssignedVars[] {736#false} is VALID [2022-04-14 23:28:47,068 INFO L290 TraceCheckUtils]: 18: Hoare triple {736#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {736#false} is VALID [2022-04-14 23:28:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:47,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015057950] [2022-04-14 23:28:47,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015057950] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:47,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:47,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714343417] [2022-04-14 23:28:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:47,070 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 19 [2022-04-14 23:28:47,070 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:47,071 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-14 23:28:47,083 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:47,083 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:47,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:47,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:47,084 INFO L87 Difference]: Start difference. First operand 56 states and 92 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) [2022-04-14 23:28:47,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:47,207 INFO L93 Difference]: Finished difference Result 99 states and 166 transitions. [2022-04-14 23:28:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:47,207 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 19 [2022-04-14 23:28:47,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:47,208 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 23:28:47,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2022-04-14 23:28:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 23:28:47,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2022-04-14 23:28:47,211 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 90 transitions. [2022-04-14 23:28:47,289 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 90 edges. 90 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:47,291 INFO L225 Difference]: With dead ends: 99 [2022-04-14 23:28:47,291 INFO L226 Difference]: Without dead ends: 99 [2022-04-14 23:28:47,291 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:47,292 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 110 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:47,293 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:47,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-04-14 23:28:47,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 73. [2022-04-14 23:28:47,298 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:47,298 INFO L82 GeneralOperation]: Start isEquivalent. First operand 99 states. Second operand has 73 states, 69 states have (on average 1.710144927536232) internal successors, (118), 69 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,298 INFO L74 IsIncluded]: Start isIncluded. First operand 99 states. Second operand has 73 states, 69 states have (on average 1.710144927536232) internal successors, (118), 69 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,299 INFO L87 Difference]: Start difference. First operand 99 states. Second operand has 73 states, 69 states have (on average 1.710144927536232) internal successors, (118), 69 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:47,302 INFO L93 Difference]: Finished difference Result 99 states and 166 transitions. [2022-04-14 23:28:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 166 transitions. [2022-04-14 23:28:47,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:47,303 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:47,303 INFO L74 IsIncluded]: Start isIncluded. First operand has 73 states, 69 states have (on average 1.710144927536232) internal successors, (118), 69 states have internal predecessors, (118), 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) Second operand 99 states. [2022-04-14 23:28:47,304 INFO L87 Difference]: Start difference. First operand has 73 states, 69 states have (on average 1.710144927536232) internal successors, (118), 69 states have internal predecessors, (118), 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) Second operand 99 states. [2022-04-14 23:28:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:47,307 INFO L93 Difference]: Finished difference Result 99 states and 166 transitions. [2022-04-14 23:28:47,308 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 166 transitions. [2022-04-14 23:28:47,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:47,308 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:47,308 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:47,308 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 1.710144927536232) internal successors, (118), 69 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 121 transitions. [2022-04-14 23:28:47,311 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 121 transitions. Word has length 19 [2022-04-14 23:28:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:47,311 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 121 transitions. [2022-04-14 23:28:47,311 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) [2022-04-14 23:28:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 121 transitions. [2022-04-14 23:28:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-14 23:28:47,312 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:47,312 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:47,312 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-14 23:28:47,312 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:47,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1261249230, now seen corresponding path program 1 times [2022-04-14 23:28:47,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:47,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243391650] [2022-04-14 23:28:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:47,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:47,349 INFO L290 TraceCheckUtils]: 0: Hoare triple {1123#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {1117#true} is VALID [2022-04-14 23:28:47,349 INFO L290 TraceCheckUtils]: 1: Hoare triple {1117#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1117#true} is VALID [2022-04-14 23:28:47,350 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1117#true} {1117#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1117#true} is VALID [2022-04-14 23:28:47,350 INFO L272 TraceCheckUtils]: 0: Hoare triple {1117#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1123#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:47,350 INFO L290 TraceCheckUtils]: 1: Hoare triple {1123#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {1117#true} is VALID [2022-04-14 23:28:47,351 INFO L290 TraceCheckUtils]: 2: Hoare triple {1117#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1117#true} is VALID [2022-04-14 23:28:47,351 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1117#true} {1117#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1117#true} is VALID [2022-04-14 23:28:47,351 INFO L272 TraceCheckUtils]: 4: Hoare triple {1117#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1117#true} is VALID [2022-04-14 23:28:47,351 INFO L290 TraceCheckUtils]: 5: Hoare triple {1117#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {1117#true} is VALID [2022-04-14 23:28:47,351 INFO L290 TraceCheckUtils]: 6: Hoare triple {1117#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {1117#true} is VALID [2022-04-14 23:28:47,352 INFO L290 TraceCheckUtils]: 7: Hoare triple {1117#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {1117#true} is VALID [2022-04-14 23:28:47,352 INFO L290 TraceCheckUtils]: 8: Hoare triple {1117#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {1117#true} is VALID [2022-04-14 23:28:47,352 INFO L290 TraceCheckUtils]: 9: Hoare triple {1117#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {1122#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:47,353 INFO L290 TraceCheckUtils]: 10: Hoare triple {1122#(= main_~p2~0 0)} [169] L57-1-->L61-1: Formula: (and (not (= v_main_~p3~0_2 0)) (= v_main_~lk3~0_3 1)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2, main_~lk3~0=v_main_~lk3~0_3} AuxVars[] AssignedVars[main_~lk3~0] {1122#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:47,353 INFO L290 TraceCheckUtils]: 11: Hoare triple {1122#(= main_~p2~0 0)} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {1122#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:47,353 INFO L290 TraceCheckUtils]: 12: Hoare triple {1122#(= main_~p2~0 0)} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {1122#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:47,354 INFO L290 TraceCheckUtils]: 13: Hoare triple {1122#(= main_~p2~0 0)} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {1122#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:47,354 INFO L290 TraceCheckUtils]: 14: Hoare triple {1122#(= main_~p2~0 0)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {1122#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:47,355 INFO L290 TraceCheckUtils]: 15: Hoare triple {1122#(= main_~p2~0 0)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {1122#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:47,355 INFO L290 TraceCheckUtils]: 16: Hoare triple {1122#(= main_~p2~0 0)} [183] L83-1-->L89: Formula: (not (= v_main_~p2~0_4 0)) InVars {main_~p2~0=v_main_~p2~0_4} OutVars{main_~p2~0=v_main_~p2~0_4} AuxVars[] AssignedVars[] {1118#false} is VALID [2022-04-14 23:28:47,355 INFO L290 TraceCheckUtils]: 17: Hoare triple {1118#false} [187] L89-->L114-1: Formula: (not (= v_main_~lk2~0_4 1)) InVars {main_~lk2~0=v_main_~lk2~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_4} AuxVars[] AssignedVars[] {1118#false} is VALID [2022-04-14 23:28:47,355 INFO L290 TraceCheckUtils]: 18: Hoare triple {1118#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1118#false} is VALID [2022-04-14 23:28:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:47,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:47,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243391650] [2022-04-14 23:28:47,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243391650] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:47,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:47,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:47,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118139180] [2022-04-14 23:28:47,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:47,357 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 19 [2022-04-14 23:28:47,357 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:47,357 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-14 23:28:47,378 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:47,378 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:47,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:47,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:47,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:47,379 INFO L87 Difference]: Start difference. First operand 73 states and 121 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) [2022-04-14 23:28:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:47,511 INFO L93 Difference]: Finished difference Result 101 states and 164 transitions. [2022-04-14 23:28:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:47,512 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 19 [2022-04-14 23:28:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 23:28:47,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2022-04-14 23:28:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 23:28:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2022-04-14 23:28:47,515 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 91 transitions. [2022-04-14 23:28:47,590 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 91 edges. 91 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:47,592 INFO L225 Difference]: With dead ends: 101 [2022-04-14 23:28:47,592 INFO L226 Difference]: Without dead ends: 101 [2022-04-14 23:28:47,592 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:47,593 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 97 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:47,594 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 73 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-04-14 23:28:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2022-04-14 23:28:47,599 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:47,599 INFO L82 GeneralOperation]: Start isEquivalent. First operand 101 states. Second operand has 99 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 95 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,599 INFO L74 IsIncluded]: Start isIncluded. First operand 101 states. Second operand has 99 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 95 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,600 INFO L87 Difference]: Start difference. First operand 101 states. Second operand has 99 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 95 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:47,603 INFO L93 Difference]: Finished difference Result 101 states and 164 transitions. [2022-04-14 23:28:47,603 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 164 transitions. [2022-04-14 23:28:47,603 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:47,603 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:47,603 INFO L74 IsIncluded]: Start isIncluded. First operand has 99 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 95 states have internal predecessors, (160), 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) Second operand 101 states. [2022-04-14 23:28:47,604 INFO L87 Difference]: Start difference. First operand has 99 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 95 states have internal predecessors, (160), 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) Second operand 101 states. [2022-04-14 23:28:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:47,607 INFO L93 Difference]: Finished difference Result 101 states and 164 transitions. [2022-04-14 23:28:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 164 transitions. [2022-04-14 23:28:47,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:47,607 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:47,607 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:47,607 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:47,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 95 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 163 transitions. [2022-04-14 23:28:47,611 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 163 transitions. Word has length 19 [2022-04-14 23:28:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:47,611 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 163 transitions. [2022-04-14 23:28:47,611 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) [2022-04-14 23:28:47,611 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 163 transitions. [2022-04-14 23:28:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-14 23:28:47,612 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:47,612 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:47,612 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-14 23:28:47,612 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2053963387, now seen corresponding path program 1 times [2022-04-14 23:28:47,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:47,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015533733] [2022-04-14 23:28:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:47,654 INFO L290 TraceCheckUtils]: 0: Hoare triple {1537#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {1531#true} is VALID [2022-04-14 23:28:47,655 INFO L290 TraceCheckUtils]: 1: Hoare triple {1531#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1531#true} is VALID [2022-04-14 23:28:47,655 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1531#true} {1531#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1531#true} is VALID [2022-04-14 23:28:47,655 INFO L272 TraceCheckUtils]: 0: Hoare triple {1531#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1537#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:47,655 INFO L290 TraceCheckUtils]: 1: Hoare triple {1537#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {1531#true} is VALID [2022-04-14 23:28:47,656 INFO L290 TraceCheckUtils]: 2: Hoare triple {1531#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1531#true} is VALID [2022-04-14 23:28:47,656 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1531#true} {1531#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1531#true} is VALID [2022-04-14 23:28:47,656 INFO L272 TraceCheckUtils]: 4: Hoare triple {1531#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1531#true} is VALID [2022-04-14 23:28:47,656 INFO L290 TraceCheckUtils]: 5: Hoare triple {1531#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {1531#true} is VALID [2022-04-14 23:28:47,656 INFO L290 TraceCheckUtils]: 6: Hoare triple {1531#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {1531#true} is VALID [2022-04-14 23:28:47,656 INFO L290 TraceCheckUtils]: 7: Hoare triple {1531#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {1531#true} is VALID [2022-04-14 23:28:47,656 INFO L290 TraceCheckUtils]: 8: Hoare triple {1531#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {1531#true} is VALID [2022-04-14 23:28:47,657 INFO L290 TraceCheckUtils]: 9: Hoare triple {1531#true} [167] L53-2-->L57-1: Formula: (and (= v_main_~lk2~0_3 1) (not (= v_main_~p2~0_2 0))) InVars {main_~p2~0=v_main_~p2~0_2} OutVars{main_~lk2~0=v_main_~lk2~0_3, main_~p2~0=v_main_~p2~0_2} AuxVars[] AssignedVars[main_~lk2~0] {1536#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:47,657 INFO L290 TraceCheckUtils]: 10: Hoare triple {1536#(not (= main_~p2~0 0))} [169] L57-1-->L61-1: Formula: (and (not (= v_main_~p3~0_2 0)) (= v_main_~lk3~0_3 1)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2, main_~lk3~0=v_main_~lk3~0_3} AuxVars[] AssignedVars[main_~lk3~0] {1536#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:47,658 INFO L290 TraceCheckUtils]: 11: Hoare triple {1536#(not (= main_~p2~0 0))} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {1536#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:47,658 INFO L290 TraceCheckUtils]: 12: Hoare triple {1536#(not (= main_~p2~0 0))} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {1536#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:47,658 INFO L290 TraceCheckUtils]: 13: Hoare triple {1536#(not (= main_~p2~0 0))} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {1536#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:47,659 INFO L290 TraceCheckUtils]: 14: Hoare triple {1536#(not (= main_~p2~0 0))} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {1536#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:47,659 INFO L290 TraceCheckUtils]: 15: Hoare triple {1536#(not (= main_~p2~0 0))} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {1536#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:47,659 INFO L290 TraceCheckUtils]: 16: Hoare triple {1536#(not (= main_~p2~0 0))} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {1532#false} is VALID [2022-04-14 23:28:47,659 INFO L290 TraceCheckUtils]: 17: Hoare triple {1532#false} [189] L88-1-->L94: Formula: (not (= v_main_~p3~0_4 0)) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4} AuxVars[] AssignedVars[] {1532#false} is VALID [2022-04-14 23:28:47,660 INFO L290 TraceCheckUtils]: 18: Hoare triple {1532#false} [191] L94-->L114-1: Formula: (not (= v_main_~lk3~0_4 1)) InVars {main_~lk3~0=v_main_~lk3~0_4} OutVars{main_~lk3~0=v_main_~lk3~0_4} AuxVars[] AssignedVars[] {1532#false} is VALID [2022-04-14 23:28:47,660 INFO L290 TraceCheckUtils]: 19: Hoare triple {1532#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1532#false} is VALID [2022-04-14 23:28:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:47,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:47,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015533733] [2022-04-14 23:28:47,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015533733] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:47,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:47,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:47,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649876671] [2022-04-14 23:28:47,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:47,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2022-04-14 23:28:47,661 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:47,661 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,674 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:47,674 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:47,675 INFO L87 Difference]: Start difference. First operand 99 states and 163 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:47,790 INFO L93 Difference]: Finished difference Result 103 states and 164 transitions. [2022-04-14 23:28:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:47,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2022-04-14 23:28:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2022-04-14 23:28:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2022-04-14 23:28:47,793 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 90 transitions. [2022-04-14 23:28:47,869 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 90 edges. 90 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:47,872 INFO L225 Difference]: With dead ends: 103 [2022-04-14 23:28:47,872 INFO L226 Difference]: Without dead ends: 103 [2022-04-14 23:28:47,872 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:47,876 INFO L913 BasicCegarLoop]: 73 mSDtfsCounter, 91 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:47,879 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 80 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:47,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-04-14 23:28:47,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2022-04-14 23:28:47,890 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:47,890 INFO L82 GeneralOperation]: Start isEquivalent. First operand 103 states. Second operand has 101 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 97 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,891 INFO L74 IsIncluded]: Start isIncluded. First operand 103 states. Second operand has 101 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 97 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,891 INFO L87 Difference]: Start difference. First operand 103 states. Second operand has 101 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 97 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:47,895 INFO L93 Difference]: Finished difference Result 103 states and 164 transitions. [2022-04-14 23:28:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 164 transitions. [2022-04-14 23:28:47,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:47,896 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:47,896 INFO L74 IsIncluded]: Start isIncluded. First operand has 101 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 97 states have internal predecessors, (160), 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) Second operand 103 states. [2022-04-14 23:28:47,896 INFO L87 Difference]: Start difference. First operand has 101 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 97 states have internal predecessors, (160), 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) Second operand 103 states. [2022-04-14 23:28:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:47,903 INFO L93 Difference]: Finished difference Result 103 states and 164 transitions. [2022-04-14 23:28:47,903 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 164 transitions. [2022-04-14 23:28:47,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:47,904 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:47,904 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:47,904 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 97 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 163 transitions. [2022-04-14 23:28:47,909 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 163 transitions. Word has length 20 [2022-04-14 23:28:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:47,910 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 163 transitions. [2022-04-14 23:28:47,910 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 163 transitions. [2022-04-14 23:28:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-14 23:28:47,910 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:47,910 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:47,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-14 23:28:47,911 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash 444052550, now seen corresponding path program 1 times [2022-04-14 23:28:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:47,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462619640] [2022-04-14 23:28:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:47,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:47,965 INFO L290 TraceCheckUtils]: 0: Hoare triple {1959#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {1953#true} is VALID [2022-04-14 23:28:47,965 INFO L290 TraceCheckUtils]: 1: Hoare triple {1953#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1953#true} is VALID [2022-04-14 23:28:47,965 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1953#true} {1953#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1953#true} is VALID [2022-04-14 23:28:47,966 INFO L272 TraceCheckUtils]: 0: Hoare triple {1953#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1959#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:47,966 INFO L290 TraceCheckUtils]: 1: Hoare triple {1959#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {1953#true} is VALID [2022-04-14 23:28:47,966 INFO L290 TraceCheckUtils]: 2: Hoare triple {1953#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1953#true} is VALID [2022-04-14 23:28:47,967 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1953#true} {1953#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1953#true} is VALID [2022-04-14 23:28:47,967 INFO L272 TraceCheckUtils]: 4: Hoare triple {1953#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1953#true} is VALID [2022-04-14 23:28:47,967 INFO L290 TraceCheckUtils]: 5: Hoare triple {1953#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {1953#true} is VALID [2022-04-14 23:28:47,967 INFO L290 TraceCheckUtils]: 6: Hoare triple {1953#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {1953#true} is VALID [2022-04-14 23:28:47,967 INFO L290 TraceCheckUtils]: 7: Hoare triple {1953#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {1953#true} is VALID [2022-04-14 23:28:47,967 INFO L290 TraceCheckUtils]: 8: Hoare triple {1953#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {1953#true} is VALID [2022-04-14 23:28:47,968 INFO L290 TraceCheckUtils]: 9: Hoare triple {1953#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {1953#true} is VALID [2022-04-14 23:28:47,968 INFO L290 TraceCheckUtils]: 10: Hoare triple {1953#true} [169] L57-1-->L61-1: Formula: (and (not (= v_main_~p3~0_2 0)) (= v_main_~lk3~0_3 1)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2, main_~lk3~0=v_main_~lk3~0_3} AuxVars[] AssignedVars[main_~lk3~0] {1958#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:47,968 INFO L290 TraceCheckUtils]: 11: Hoare triple {1958#(= main_~lk3~0 1)} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {1958#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:47,969 INFO L290 TraceCheckUtils]: 12: Hoare triple {1958#(= main_~lk3~0 1)} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {1958#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:47,969 INFO L290 TraceCheckUtils]: 13: Hoare triple {1958#(= main_~lk3~0 1)} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {1958#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:47,969 INFO L290 TraceCheckUtils]: 14: Hoare triple {1958#(= main_~lk3~0 1)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {1958#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:47,970 INFO L290 TraceCheckUtils]: 15: Hoare triple {1958#(= main_~lk3~0 1)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {1958#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:47,970 INFO L290 TraceCheckUtils]: 16: Hoare triple {1958#(= main_~lk3~0 1)} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {1958#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:47,970 INFO L290 TraceCheckUtils]: 17: Hoare triple {1958#(= main_~lk3~0 1)} [189] L88-1-->L94: Formula: (not (= v_main_~p3~0_4 0)) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4} AuxVars[] AssignedVars[] {1958#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:47,971 INFO L290 TraceCheckUtils]: 18: Hoare triple {1958#(= main_~lk3~0 1)} [191] L94-->L114-1: Formula: (not (= v_main_~lk3~0_4 1)) InVars {main_~lk3~0=v_main_~lk3~0_4} OutVars{main_~lk3~0=v_main_~lk3~0_4} AuxVars[] AssignedVars[] {1954#false} is VALID [2022-04-14 23:28:47,971 INFO L290 TraceCheckUtils]: 19: Hoare triple {1954#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1954#false} is VALID [2022-04-14 23:28:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:47,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:47,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462619640] [2022-04-14 23:28:47,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462619640] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:47,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:47,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:47,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125416575] [2022-04-14 23:28:47,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:47,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2022-04-14 23:28:47,972 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:47,973 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:47,993 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:47,993 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:47,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:47,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:47,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:47,994 INFO L87 Difference]: Start difference. First operand 101 states and 163 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:48,110 INFO L93 Difference]: Finished difference Result 179 states and 292 transitions. [2022-04-14 23:28:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:48,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2022-04-14 23:28:48,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2022-04-14 23:28:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2022-04-14 23:28:48,113 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 86 transitions. [2022-04-14 23:28:48,180 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 86 edges. 86 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:48,183 INFO L225 Difference]: With dead ends: 179 [2022-04-14 23:28:48,183 INFO L226 Difference]: Without dead ends: 179 [2022-04-14 23:28:48,183 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:48,184 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 103 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:48,185 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 58 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-04-14 23:28:48,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 137. [2022-04-14 23:28:48,203 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:48,204 INFO L82 GeneralOperation]: Start isEquivalent. First operand 179 states. Second operand has 137 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 133 states have internal predecessors, (216), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,204 INFO L74 IsIncluded]: Start isIncluded. First operand 179 states. Second operand has 137 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 133 states have internal predecessors, (216), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,205 INFO L87 Difference]: Start difference. First operand 179 states. Second operand has 137 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 133 states have internal predecessors, (216), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:48,209 INFO L93 Difference]: Finished difference Result 179 states and 292 transitions. [2022-04-14 23:28:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 292 transitions. [2022-04-14 23:28:48,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:48,209 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:48,210 INFO L74 IsIncluded]: Start isIncluded. First operand has 137 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 133 states have internal predecessors, (216), 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) Second operand 179 states. [2022-04-14 23:28:48,210 INFO L87 Difference]: Start difference. First operand has 137 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 133 states have internal predecessors, (216), 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) Second operand 179 states. [2022-04-14 23:28:48,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:48,215 INFO L93 Difference]: Finished difference Result 179 states and 292 transitions. [2022-04-14 23:28:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 292 transitions. [2022-04-14 23:28:48,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:48,215 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:48,215 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:48,215 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:48,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 133 states have internal predecessors, (216), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 219 transitions. [2022-04-14 23:28:48,219 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 219 transitions. Word has length 20 [2022-04-14 23:28:48,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:48,219 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 219 transitions. [2022-04-14 23:28:48,220 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,220 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 219 transitions. [2022-04-14 23:28:48,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-14 23:28:48,220 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:48,220 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:48,220 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-14 23:28:48,221 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:48,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:48,221 INFO L85 PathProgramCache]: Analyzing trace with hash 247539045, now seen corresponding path program 1 times [2022-04-14 23:28:48,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:48,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241067855] [2022-04-14 23:28:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:48,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:48,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:48,258 INFO L290 TraceCheckUtils]: 0: Hoare triple {2645#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {2639#true} is VALID [2022-04-14 23:28:48,259 INFO L290 TraceCheckUtils]: 1: Hoare triple {2639#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2639#true} is VALID [2022-04-14 23:28:48,259 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2639#true} {2639#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2639#true} is VALID [2022-04-14 23:28:48,259 INFO L272 TraceCheckUtils]: 0: Hoare triple {2639#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2645#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:48,259 INFO L290 TraceCheckUtils]: 1: Hoare triple {2645#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {2639#true} is VALID [2022-04-14 23:28:48,260 INFO L290 TraceCheckUtils]: 2: Hoare triple {2639#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2639#true} is VALID [2022-04-14 23:28:48,260 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2639#true} {2639#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2639#true} is VALID [2022-04-14 23:28:48,260 INFO L272 TraceCheckUtils]: 4: Hoare triple {2639#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2639#true} is VALID [2022-04-14 23:28:48,260 INFO L290 TraceCheckUtils]: 5: Hoare triple {2639#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {2639#true} is VALID [2022-04-14 23:28:48,260 INFO L290 TraceCheckUtils]: 6: Hoare triple {2639#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {2639#true} is VALID [2022-04-14 23:28:48,261 INFO L290 TraceCheckUtils]: 7: Hoare triple {2639#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {2639#true} is VALID [2022-04-14 23:28:48,261 INFO L290 TraceCheckUtils]: 8: Hoare triple {2639#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {2639#true} is VALID [2022-04-14 23:28:48,261 INFO L290 TraceCheckUtils]: 9: Hoare triple {2639#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {2639#true} is VALID [2022-04-14 23:28:48,261 INFO L290 TraceCheckUtils]: 10: Hoare triple {2639#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {2644#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:48,261 INFO L290 TraceCheckUtils]: 11: Hoare triple {2644#(= main_~p3~0 0)} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {2644#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:48,262 INFO L290 TraceCheckUtils]: 12: Hoare triple {2644#(= main_~p3~0 0)} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {2644#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:48,262 INFO L290 TraceCheckUtils]: 13: Hoare triple {2644#(= main_~p3~0 0)} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {2644#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:48,263 INFO L290 TraceCheckUtils]: 14: Hoare triple {2644#(= main_~p3~0 0)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {2644#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:48,263 INFO L290 TraceCheckUtils]: 15: Hoare triple {2644#(= main_~p3~0 0)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {2644#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:48,263 INFO L290 TraceCheckUtils]: 16: Hoare triple {2644#(= main_~p3~0 0)} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {2644#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:48,264 INFO L290 TraceCheckUtils]: 17: Hoare triple {2644#(= main_~p3~0 0)} [189] L88-1-->L94: Formula: (not (= v_main_~p3~0_4 0)) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4} AuxVars[] AssignedVars[] {2640#false} is VALID [2022-04-14 23:28:48,264 INFO L290 TraceCheckUtils]: 18: Hoare triple {2640#false} [191] L94-->L114-1: Formula: (not (= v_main_~lk3~0_4 1)) InVars {main_~lk3~0=v_main_~lk3~0_4} OutVars{main_~lk3~0=v_main_~lk3~0_4} AuxVars[] AssignedVars[] {2640#false} is VALID [2022-04-14 23:28:48,264 INFO L290 TraceCheckUtils]: 19: Hoare triple {2640#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2640#false} is VALID [2022-04-14 23:28:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:48,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:48,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241067855] [2022-04-14 23:28:48,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241067855] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:48,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:48,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:48,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037447091] [2022-04-14 23:28:48,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:48,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2022-04-14 23:28:48,265 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:48,266 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,277 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:48,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:48,278 INFO L87 Difference]: Start difference. First operand 137 states and 219 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:48,393 INFO L93 Difference]: Finished difference Result 187 states and 292 transitions. [2022-04-14 23:28:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:48,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2022-04-14 23:28:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2022-04-14 23:28:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2022-04-14 23:28:48,396 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 89 transitions. [2022-04-14 23:28:48,467 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 89 edges. 89 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:48,470 INFO L225 Difference]: With dead ends: 187 [2022-04-14 23:28:48,470 INFO L226 Difference]: Without dead ends: 187 [2022-04-14 23:28:48,471 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:48,472 INFO L913 BasicCegarLoop]: 68 mSDtfsCounter, 91 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:48,472 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 75 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:48,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-04-14 23:28:48,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2022-04-14 23:28:48,476 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:48,477 INFO L82 GeneralOperation]: Start isEquivalent. First operand 187 states. Second operand has 185 states, 181 states have (on average 1.591160220994475) internal successors, (288), 181 states have internal predecessors, (288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,477 INFO L74 IsIncluded]: Start isIncluded. First operand 187 states. Second operand has 185 states, 181 states have (on average 1.591160220994475) internal successors, (288), 181 states have internal predecessors, (288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,478 INFO L87 Difference]: Start difference. First operand 187 states. Second operand has 185 states, 181 states have (on average 1.591160220994475) internal successors, (288), 181 states have internal predecessors, (288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:48,483 INFO L93 Difference]: Finished difference Result 187 states and 292 transitions. [2022-04-14 23:28:48,483 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 292 transitions. [2022-04-14 23:28:48,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:48,483 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:48,484 INFO L74 IsIncluded]: Start isIncluded. First operand has 185 states, 181 states have (on average 1.591160220994475) internal successors, (288), 181 states have internal predecessors, (288), 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) Second operand 187 states. [2022-04-14 23:28:48,484 INFO L87 Difference]: Start difference. First operand has 185 states, 181 states have (on average 1.591160220994475) internal successors, (288), 181 states have internal predecessors, (288), 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) Second operand 187 states. [2022-04-14 23:28:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:48,489 INFO L93 Difference]: Finished difference Result 187 states and 292 transitions. [2022-04-14 23:28:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 292 transitions. [2022-04-14 23:28:48,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:48,490 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:48,490 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:48,490 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 181 states have (on average 1.591160220994475) internal successors, (288), 181 states have internal predecessors, (288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 291 transitions. [2022-04-14 23:28:48,495 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 291 transitions. Word has length 20 [2022-04-14 23:28:48,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:48,495 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 291 transitions. [2022-04-14 23:28:48,496 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,496 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 291 transitions. [2022-04-14 23:28:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-14 23:28:48,496 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:48,496 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:48,496 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-14 23:28:48,497 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:48,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:48,497 INFO L85 PathProgramCache]: Analyzing trace with hash 880759370, now seen corresponding path program 1 times [2022-04-14 23:28:48,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:48,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129807694] [2022-04-14 23:28:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:48,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:48,529 INFO L290 TraceCheckUtils]: 0: Hoare triple {3403#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {3397#true} is VALID [2022-04-14 23:28:48,529 INFO L290 TraceCheckUtils]: 1: Hoare triple {3397#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3397#true} is VALID [2022-04-14 23:28:48,530 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {3397#true} {3397#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3397#true} is VALID [2022-04-14 23:28:48,530 INFO L272 TraceCheckUtils]: 0: Hoare triple {3397#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3403#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:48,530 INFO L290 TraceCheckUtils]: 1: Hoare triple {3403#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {3397#true} is VALID [2022-04-14 23:28:48,530 INFO L290 TraceCheckUtils]: 2: Hoare triple {3397#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3397#true} is VALID [2022-04-14 23:28:48,531 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3397#true} {3397#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3397#true} is VALID [2022-04-14 23:28:48,531 INFO L272 TraceCheckUtils]: 4: Hoare triple {3397#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3397#true} is VALID [2022-04-14 23:28:48,531 INFO L290 TraceCheckUtils]: 5: Hoare triple {3397#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {3397#true} is VALID [2022-04-14 23:28:48,531 INFO L290 TraceCheckUtils]: 6: Hoare triple {3397#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {3397#true} is VALID [2022-04-14 23:28:48,531 INFO L290 TraceCheckUtils]: 7: Hoare triple {3397#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {3397#true} is VALID [2022-04-14 23:28:48,531 INFO L290 TraceCheckUtils]: 8: Hoare triple {3397#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {3397#true} is VALID [2022-04-14 23:28:48,531 INFO L290 TraceCheckUtils]: 9: Hoare triple {3397#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {3397#true} is VALID [2022-04-14 23:28:48,532 INFO L290 TraceCheckUtils]: 10: Hoare triple {3397#true} [169] L57-1-->L61-1: Formula: (and (not (= v_main_~p3~0_2 0)) (= v_main_~lk3~0_3 1)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2, main_~lk3~0=v_main_~lk3~0_3} AuxVars[] AssignedVars[main_~lk3~0] {3402#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:48,532 INFO L290 TraceCheckUtils]: 11: Hoare triple {3402#(not (= main_~p3~0 0))} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {3402#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:48,533 INFO L290 TraceCheckUtils]: 12: Hoare triple {3402#(not (= main_~p3~0 0))} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {3402#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:48,533 INFO L290 TraceCheckUtils]: 13: Hoare triple {3402#(not (= main_~p3~0 0))} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {3402#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:48,533 INFO L290 TraceCheckUtils]: 14: Hoare triple {3402#(not (= main_~p3~0 0))} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {3402#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:48,534 INFO L290 TraceCheckUtils]: 15: Hoare triple {3402#(not (= main_~p3~0 0))} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {3402#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:48,534 INFO L290 TraceCheckUtils]: 16: Hoare triple {3402#(not (= main_~p3~0 0))} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {3402#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:48,534 INFO L290 TraceCheckUtils]: 17: Hoare triple {3402#(not (= main_~p3~0 0))} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {3398#false} is VALID [2022-04-14 23:28:48,534 INFO L290 TraceCheckUtils]: 18: Hoare triple {3398#false} [193] L93-1-->L99: Formula: (not (= v_main_~p4~0_4 0)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4} AuxVars[] AssignedVars[] {3398#false} is VALID [2022-04-14 23:28:48,535 INFO L290 TraceCheckUtils]: 19: Hoare triple {3398#false} [195] L99-->L114-1: Formula: (not (= v_main_~lk4~0_4 1)) InVars {main_~lk4~0=v_main_~lk4~0_4} OutVars{main_~lk4~0=v_main_~lk4~0_4} AuxVars[] AssignedVars[] {3398#false} is VALID [2022-04-14 23:28:48,535 INFO L290 TraceCheckUtils]: 20: Hoare triple {3398#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3398#false} is VALID [2022-04-14 23:28:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:48,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:48,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129807694] [2022-04-14 23:28:48,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129807694] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:48,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:48,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:48,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486500081] [2022-04-14 23:28:48,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:48,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 [2022-04-14 23:28:48,536 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:48,536 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,550 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:48,550 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:48,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:48,551 INFO L87 Difference]: Start difference. First operand 185 states and 291 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:48,664 INFO L93 Difference]: Finished difference Result 191 states and 292 transitions. [2022-04-14 23:28:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:48,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 [2022-04-14 23:28:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2022-04-14 23:28:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2022-04-14 23:28:48,668 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 88 transitions. [2022-04-14 23:28:48,748 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 88 edges. 88 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:48,751 INFO L225 Difference]: With dead ends: 191 [2022-04-14 23:28:48,751 INFO L226 Difference]: Without dead ends: 191 [2022-04-14 23:28:48,751 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:48,752 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 90 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:48,752 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 77 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-04-14 23:28:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2022-04-14 23:28:48,755 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:48,756 INFO L82 GeneralOperation]: Start isEquivalent. First operand 191 states. Second operand has 189 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 185 states have internal predecessors, (288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,756 INFO L74 IsIncluded]: Start isIncluded. First operand 191 states. Second operand has 189 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 185 states have internal predecessors, (288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,757 INFO L87 Difference]: Start difference. First operand 191 states. Second operand has 189 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 185 states have internal predecessors, (288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:48,762 INFO L93 Difference]: Finished difference Result 191 states and 292 transitions. [2022-04-14 23:28:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 292 transitions. [2022-04-14 23:28:48,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:48,762 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:48,762 INFO L74 IsIncluded]: Start isIncluded. First operand has 189 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 185 states have internal predecessors, (288), 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) Second operand 191 states. [2022-04-14 23:28:48,763 INFO L87 Difference]: Start difference. First operand has 189 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 185 states have internal predecessors, (288), 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) Second operand 191 states. [2022-04-14 23:28:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:48,768 INFO L93 Difference]: Finished difference Result 191 states and 292 transitions. [2022-04-14 23:28:48,768 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 292 transitions. [2022-04-14 23:28:48,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:48,768 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:48,768 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:48,768 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 185 states have internal predecessors, (288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 291 transitions. [2022-04-14 23:28:48,773 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 291 transitions. Word has length 21 [2022-04-14 23:28:48,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:48,774 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 291 transitions. [2022-04-14 23:28:48,774 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,774 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 291 transitions. [2022-04-14 23:28:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-14 23:28:48,774 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:48,774 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:48,774 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-14 23:28:48,775 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash -916191989, now seen corresponding path program 1 times [2022-04-14 23:28:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:48,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542060251] [2022-04-14 23:28:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:48,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:48,821 INFO L290 TraceCheckUtils]: 0: Hoare triple {4177#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {4171#true} is VALID [2022-04-14 23:28:48,822 INFO L290 TraceCheckUtils]: 1: Hoare triple {4171#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4171#true} is VALID [2022-04-14 23:28:48,822 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {4171#true} {4171#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4171#true} is VALID [2022-04-14 23:28:48,822 INFO L272 TraceCheckUtils]: 0: Hoare triple {4171#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4177#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:48,823 INFO L290 TraceCheckUtils]: 1: Hoare triple {4177#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {4171#true} is VALID [2022-04-14 23:28:48,823 INFO L290 TraceCheckUtils]: 2: Hoare triple {4171#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4171#true} is VALID [2022-04-14 23:28:48,823 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4171#true} {4171#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4171#true} is VALID [2022-04-14 23:28:48,823 INFO L272 TraceCheckUtils]: 4: Hoare triple {4171#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4171#true} is VALID [2022-04-14 23:28:48,823 INFO L290 TraceCheckUtils]: 5: Hoare triple {4171#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {4171#true} is VALID [2022-04-14 23:28:48,823 INFO L290 TraceCheckUtils]: 6: Hoare triple {4171#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {4171#true} is VALID [2022-04-14 23:28:48,824 INFO L290 TraceCheckUtils]: 7: Hoare triple {4171#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {4171#true} is VALID [2022-04-14 23:28:48,824 INFO L290 TraceCheckUtils]: 8: Hoare triple {4171#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {4171#true} is VALID [2022-04-14 23:28:48,824 INFO L290 TraceCheckUtils]: 9: Hoare triple {4171#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {4171#true} is VALID [2022-04-14 23:28:48,836 INFO L290 TraceCheckUtils]: 10: Hoare triple {4171#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {4171#true} is VALID [2022-04-14 23:28:48,836 INFO L290 TraceCheckUtils]: 11: Hoare triple {4171#true} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {4176#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:48,837 INFO L290 TraceCheckUtils]: 12: Hoare triple {4176#(= main_~lk4~0 1)} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {4176#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:48,837 INFO L290 TraceCheckUtils]: 13: Hoare triple {4176#(= main_~lk4~0 1)} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {4176#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:48,837 INFO L290 TraceCheckUtils]: 14: Hoare triple {4176#(= main_~lk4~0 1)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {4176#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:48,838 INFO L290 TraceCheckUtils]: 15: Hoare triple {4176#(= main_~lk4~0 1)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {4176#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:48,838 INFO L290 TraceCheckUtils]: 16: Hoare triple {4176#(= main_~lk4~0 1)} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {4176#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:48,838 INFO L290 TraceCheckUtils]: 17: Hoare triple {4176#(= main_~lk4~0 1)} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {4176#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:48,839 INFO L290 TraceCheckUtils]: 18: Hoare triple {4176#(= main_~lk4~0 1)} [193] L93-1-->L99: Formula: (not (= v_main_~p4~0_4 0)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4} AuxVars[] AssignedVars[] {4176#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:48,839 INFO L290 TraceCheckUtils]: 19: Hoare triple {4176#(= main_~lk4~0 1)} [195] L99-->L114-1: Formula: (not (= v_main_~lk4~0_4 1)) InVars {main_~lk4~0=v_main_~lk4~0_4} OutVars{main_~lk4~0=v_main_~lk4~0_4} AuxVars[] AssignedVars[] {4172#false} is VALID [2022-04-14 23:28:48,839 INFO L290 TraceCheckUtils]: 20: Hoare triple {4172#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4172#false} is VALID [2022-04-14 23:28:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:48,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:48,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542060251] [2022-04-14 23:28:48,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542060251] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:48,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:48,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357062499] [2022-04-14 23:28:48,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:48,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 [2022-04-14 23:28:48,841 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:48,841 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,855 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:48,855 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:48,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:48,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:48,856 INFO L87 Difference]: Start difference. First operand 189 states and 291 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:48,974 INFO L93 Difference]: Finished difference Result 331 states and 512 transitions. [2022-04-14 23:28:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:48,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 [2022-04-14 23:28:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2022-04-14 23:28:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2022-04-14 23:28:48,976 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 82 transitions. [2022-04-14 23:28:49,038 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 82 edges. 82 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:49,044 INFO L225 Difference]: With dead ends: 331 [2022-04-14 23:28:49,044 INFO L226 Difference]: Without dead ends: 331 [2022-04-14 23:28:49,044 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:49,045 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 96 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:49,045 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 57 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:49,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-04-14 23:28:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 265. [2022-04-14 23:28:49,050 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:49,050 INFO L82 GeneralOperation]: Start isEquivalent. First operand 331 states. Second operand has 265 states, 261 states have (on average 1.5172413793103448) internal successors, (396), 261 states have internal predecessors, (396), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,051 INFO L74 IsIncluded]: Start isIncluded. First operand 331 states. Second operand has 265 states, 261 states have (on average 1.5172413793103448) internal successors, (396), 261 states have internal predecessors, (396), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,051 INFO L87 Difference]: Start difference. First operand 331 states. Second operand has 265 states, 261 states have (on average 1.5172413793103448) internal successors, (396), 261 states have internal predecessors, (396), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:49,058 INFO L93 Difference]: Finished difference Result 331 states and 512 transitions. [2022-04-14 23:28:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 512 transitions. [2022-04-14 23:28:49,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:49,059 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:49,059 INFO L74 IsIncluded]: Start isIncluded. First operand has 265 states, 261 states have (on average 1.5172413793103448) internal successors, (396), 261 states have internal predecessors, (396), 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) Second operand 331 states. [2022-04-14 23:28:49,060 INFO L87 Difference]: Start difference. First operand has 265 states, 261 states have (on average 1.5172413793103448) internal successors, (396), 261 states have internal predecessors, (396), 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) Second operand 331 states. [2022-04-14 23:28:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:49,067 INFO L93 Difference]: Finished difference Result 331 states and 512 transitions. [2022-04-14 23:28:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 512 transitions. [2022-04-14 23:28:49,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:49,068 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:49,068 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:49,068 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:49,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 261 states have (on average 1.5172413793103448) internal successors, (396), 261 states have internal predecessors, (396), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 399 transitions. [2022-04-14 23:28:49,073 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 399 transitions. Word has length 21 [2022-04-14 23:28:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:49,073 INFO L478 AbstractCegarLoop]: Abstraction has 265 states and 399 transitions. [2022-04-14 23:28:49,074 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 399 transitions. [2022-04-14 23:28:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-14 23:28:49,074 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:49,074 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:49,075 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-14 23:28:49,075 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:49,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1112705494, now seen corresponding path program 1 times [2022-04-14 23:28:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:49,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128094531] [2022-04-14 23:28:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:49,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:49,105 INFO L290 TraceCheckUtils]: 0: Hoare triple {5447#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {5441#true} is VALID [2022-04-14 23:28:49,105 INFO L290 TraceCheckUtils]: 1: Hoare triple {5441#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5441#true} is VALID [2022-04-14 23:28:49,105 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {5441#true} {5441#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5441#true} is VALID [2022-04-14 23:28:49,106 INFO L272 TraceCheckUtils]: 0: Hoare triple {5441#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5447#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:49,106 INFO L290 TraceCheckUtils]: 1: Hoare triple {5447#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {5441#true} is VALID [2022-04-14 23:28:49,106 INFO L290 TraceCheckUtils]: 2: Hoare triple {5441#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5441#true} is VALID [2022-04-14 23:28:49,106 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5441#true} {5441#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5441#true} is VALID [2022-04-14 23:28:49,106 INFO L272 TraceCheckUtils]: 4: Hoare triple {5441#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5441#true} is VALID [2022-04-14 23:28:49,107 INFO L290 TraceCheckUtils]: 5: Hoare triple {5441#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {5441#true} is VALID [2022-04-14 23:28:49,107 INFO L290 TraceCheckUtils]: 6: Hoare triple {5441#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {5441#true} is VALID [2022-04-14 23:28:49,107 INFO L290 TraceCheckUtils]: 7: Hoare triple {5441#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {5441#true} is VALID [2022-04-14 23:28:49,107 INFO L290 TraceCheckUtils]: 8: Hoare triple {5441#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {5441#true} is VALID [2022-04-14 23:28:49,107 INFO L290 TraceCheckUtils]: 9: Hoare triple {5441#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {5441#true} is VALID [2022-04-14 23:28:49,107 INFO L290 TraceCheckUtils]: 10: Hoare triple {5441#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {5441#true} is VALID [2022-04-14 23:28:49,108 INFO L290 TraceCheckUtils]: 11: Hoare triple {5441#true} [172] L61-1-->L65-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {5446#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:49,108 INFO L290 TraceCheckUtils]: 12: Hoare triple {5446#(= main_~p4~0 0)} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {5446#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:49,108 INFO L290 TraceCheckUtils]: 13: Hoare triple {5446#(= main_~p4~0 0)} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {5446#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:49,109 INFO L290 TraceCheckUtils]: 14: Hoare triple {5446#(= main_~p4~0 0)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {5446#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:49,109 INFO L290 TraceCheckUtils]: 15: Hoare triple {5446#(= main_~p4~0 0)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {5446#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:49,109 INFO L290 TraceCheckUtils]: 16: Hoare triple {5446#(= main_~p4~0 0)} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {5446#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:49,110 INFO L290 TraceCheckUtils]: 17: Hoare triple {5446#(= main_~p4~0 0)} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {5446#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:49,110 INFO L290 TraceCheckUtils]: 18: Hoare triple {5446#(= main_~p4~0 0)} [193] L93-1-->L99: Formula: (not (= v_main_~p4~0_4 0)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4} AuxVars[] AssignedVars[] {5442#false} is VALID [2022-04-14 23:28:49,110 INFO L290 TraceCheckUtils]: 19: Hoare triple {5442#false} [195] L99-->L114-1: Formula: (not (= v_main_~lk4~0_4 1)) InVars {main_~lk4~0=v_main_~lk4~0_4} OutVars{main_~lk4~0=v_main_~lk4~0_4} AuxVars[] AssignedVars[] {5442#false} is VALID [2022-04-14 23:28:49,110 INFO L290 TraceCheckUtils]: 20: Hoare triple {5442#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5442#false} is VALID [2022-04-14 23:28:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:49,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128094531] [2022-04-14 23:28:49,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128094531] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:49,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:49,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294628026] [2022-04-14 23:28:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:49,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 [2022-04-14 23:28:49,112 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:49,112 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,125 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:49,125 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:49,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:49,126 INFO L87 Difference]: Start difference. First operand 265 states and 399 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:49,250 INFO L93 Difference]: Finished difference Result 355 states and 520 transitions. [2022-04-14 23:28:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:49,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 [2022-04-14 23:28:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2022-04-14 23:28:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2022-04-14 23:28:49,252 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 87 transitions. [2022-04-14 23:28:49,326 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 87 edges. 87 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:49,333 INFO L225 Difference]: With dead ends: 355 [2022-04-14 23:28:49,333 INFO L226 Difference]: Without dead ends: 355 [2022-04-14 23:28:49,334 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:49,334 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 85 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:49,334 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 77 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-04-14 23:28:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 353. [2022-04-14 23:28:49,340 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:49,341 INFO L82 GeneralOperation]: Start isEquivalent. First operand 355 states. Second operand has 353 states, 349 states have (on average 1.478510028653295) internal successors, (516), 349 states have internal predecessors, (516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,341 INFO L74 IsIncluded]: Start isIncluded. First operand 355 states. Second operand has 353 states, 349 states have (on average 1.478510028653295) internal successors, (516), 349 states have internal predecessors, (516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,342 INFO L87 Difference]: Start difference. First operand 355 states. Second operand has 353 states, 349 states have (on average 1.478510028653295) internal successors, (516), 349 states have internal predecessors, (516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:49,352 INFO L93 Difference]: Finished difference Result 355 states and 520 transitions. [2022-04-14 23:28:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 520 transitions. [2022-04-14 23:28:49,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:49,352 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:49,353 INFO L74 IsIncluded]: Start isIncluded. First operand has 353 states, 349 states have (on average 1.478510028653295) internal successors, (516), 349 states have internal predecessors, (516), 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) Second operand 355 states. [2022-04-14 23:28:49,354 INFO L87 Difference]: Start difference. First operand has 353 states, 349 states have (on average 1.478510028653295) internal successors, (516), 349 states have internal predecessors, (516), 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) Second operand 355 states. [2022-04-14 23:28:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:49,362 INFO L93 Difference]: Finished difference Result 355 states and 520 transitions. [2022-04-14 23:28:49,362 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 520 transitions. [2022-04-14 23:28:49,362 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:49,362 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:49,362 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:49,362 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 349 states have (on average 1.478510028653295) internal successors, (516), 349 states have internal predecessors, (516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 519 transitions. [2022-04-14 23:28:49,370 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 519 transitions. Word has length 21 [2022-04-14 23:28:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:49,370 INFO L478 AbstractCegarLoop]: Abstraction has 353 states and 519 transitions. [2022-04-14 23:28:49,371 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 519 transitions. [2022-04-14 23:28:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-14 23:28:49,373 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:49,373 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:49,373 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-14 23:28:49,374 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1662851745, now seen corresponding path program 1 times [2022-04-14 23:28:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:49,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217433056] [2022-04-14 23:28:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:49,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:49,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:49,423 INFO L290 TraceCheckUtils]: 0: Hoare triple {6877#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {6871#true} is VALID [2022-04-14 23:28:49,424 INFO L290 TraceCheckUtils]: 1: Hoare triple {6871#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6871#true} is VALID [2022-04-14 23:28:49,424 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {6871#true} {6871#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6871#true} is VALID [2022-04-14 23:28:49,426 INFO L272 TraceCheckUtils]: 0: Hoare triple {6871#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6877#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:49,426 INFO L290 TraceCheckUtils]: 1: Hoare triple {6877#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {6871#true} is VALID [2022-04-14 23:28:49,429 INFO L290 TraceCheckUtils]: 2: Hoare triple {6871#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6871#true} is VALID [2022-04-14 23:28:49,432 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {6871#true} {6871#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6871#true} is VALID [2022-04-14 23:28:49,432 INFO L272 TraceCheckUtils]: 4: Hoare triple {6871#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6871#true} is VALID [2022-04-14 23:28:49,432 INFO L290 TraceCheckUtils]: 5: Hoare triple {6871#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {6871#true} is VALID [2022-04-14 23:28:49,433 INFO L290 TraceCheckUtils]: 6: Hoare triple {6871#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {6871#true} is VALID [2022-04-14 23:28:49,433 INFO L290 TraceCheckUtils]: 7: Hoare triple {6871#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {6871#true} is VALID [2022-04-14 23:28:49,433 INFO L290 TraceCheckUtils]: 8: Hoare triple {6871#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {6871#true} is VALID [2022-04-14 23:28:49,433 INFO L290 TraceCheckUtils]: 9: Hoare triple {6871#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {6871#true} is VALID [2022-04-14 23:28:49,433 INFO L290 TraceCheckUtils]: 10: Hoare triple {6871#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {6871#true} is VALID [2022-04-14 23:28:49,433 INFO L290 TraceCheckUtils]: 11: Hoare triple {6871#true} [171] L61-1-->L65-1: Formula: (and (= v_main_~lk4~0_3 1) (not (= v_main_~p4~0_2 0))) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2, main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[main_~lk4~0] {6876#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:49,434 INFO L290 TraceCheckUtils]: 12: Hoare triple {6876#(not (= main_~p4~0 0))} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {6876#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:49,434 INFO L290 TraceCheckUtils]: 13: Hoare triple {6876#(not (= main_~p4~0 0))} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {6876#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:49,434 INFO L290 TraceCheckUtils]: 14: Hoare triple {6876#(not (= main_~p4~0 0))} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {6876#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:49,435 INFO L290 TraceCheckUtils]: 15: Hoare triple {6876#(not (= main_~p4~0 0))} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {6876#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:49,435 INFO L290 TraceCheckUtils]: 16: Hoare triple {6876#(not (= main_~p4~0 0))} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {6876#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:49,435 INFO L290 TraceCheckUtils]: 17: Hoare triple {6876#(not (= main_~p4~0 0))} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {6876#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:49,436 INFO L290 TraceCheckUtils]: 18: Hoare triple {6876#(not (= main_~p4~0 0))} [194] L93-1-->L98-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {6872#false} is VALID [2022-04-14 23:28:49,436 INFO L290 TraceCheckUtils]: 19: Hoare triple {6872#false} [197] L98-1-->L104: Formula: (not (= v_main_~p5~0_4 0)) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4} AuxVars[] AssignedVars[] {6872#false} is VALID [2022-04-14 23:28:49,436 INFO L290 TraceCheckUtils]: 20: Hoare triple {6872#false} [199] L104-->L114-1: Formula: (not (= v_main_~lk5~0_4 1)) InVars {main_~lk5~0=v_main_~lk5~0_4} OutVars{main_~lk5~0=v_main_~lk5~0_4} AuxVars[] AssignedVars[] {6872#false} is VALID [2022-04-14 23:28:49,436 INFO L290 TraceCheckUtils]: 21: Hoare triple {6872#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6872#false} is VALID [2022-04-14 23:28:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:49,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:49,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217433056] [2022-04-14 23:28:49,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217433056] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:49,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:49,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138650983] [2022-04-14 23:28:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:49,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-14 23:28:49,437 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:49,437 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,450 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:49,450 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:49,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:49,451 INFO L87 Difference]: Start difference. First operand 353 states and 519 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:49,568 INFO L93 Difference]: Finished difference Result 363 states and 520 transitions. [2022-04-14 23:28:49,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:49,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-14 23:28:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2022-04-14 23:28:49,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2022-04-14 23:28:49,572 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 86 transitions. [2022-04-14 23:28:49,650 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 86 edges. 86 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:49,657 INFO L225 Difference]: With dead ends: 363 [2022-04-14 23:28:49,657 INFO L226 Difference]: Without dead ends: 363 [2022-04-14 23:28:49,657 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:49,658 INFO L913 BasicCegarLoop]: 67 mSDtfsCounter, 89 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:49,658 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 74 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:49,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-04-14 23:28:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 361. [2022-04-14 23:28:49,664 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:49,665 INFO L82 GeneralOperation]: Start isEquivalent. First operand 363 states. Second operand has 361 states, 357 states have (on average 1.4453781512605042) internal successors, (516), 357 states have internal predecessors, (516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,666 INFO L74 IsIncluded]: Start isIncluded. First operand 363 states. Second operand has 361 states, 357 states have (on average 1.4453781512605042) internal successors, (516), 357 states have internal predecessors, (516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,667 INFO L87 Difference]: Start difference. First operand 363 states. Second operand has 361 states, 357 states have (on average 1.4453781512605042) internal successors, (516), 357 states have internal predecessors, (516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:49,674 INFO L93 Difference]: Finished difference Result 363 states and 520 transitions. [2022-04-14 23:28:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 520 transitions. [2022-04-14 23:28:49,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:49,675 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:49,676 INFO L74 IsIncluded]: Start isIncluded. First operand has 361 states, 357 states have (on average 1.4453781512605042) internal successors, (516), 357 states have internal predecessors, (516), 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) Second operand 363 states. [2022-04-14 23:28:49,676 INFO L87 Difference]: Start difference. First operand has 361 states, 357 states have (on average 1.4453781512605042) internal successors, (516), 357 states have internal predecessors, (516), 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) Second operand 363 states. [2022-04-14 23:28:49,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:49,684 INFO L93 Difference]: Finished difference Result 363 states and 520 transitions. [2022-04-14 23:28:49,684 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 520 transitions. [2022-04-14 23:28:49,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:49,685 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:49,685 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:49,685 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:49,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 357 states have (on average 1.4453781512605042) internal successors, (516), 357 states have internal predecessors, (516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 519 transitions. [2022-04-14 23:28:49,693 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 519 transitions. Word has length 22 [2022-04-14 23:28:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:49,694 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 519 transitions. [2022-04-14 23:28:49,694 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 519 transitions. [2022-04-14 23:28:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-14 23:28:49,695 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:49,695 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:49,695 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-14 23:28:49,695 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash -134099614, now seen corresponding path program 1 times [2022-04-14 23:28:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:49,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067095844] [2022-04-14 23:28:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:49,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:49,736 INFO L290 TraceCheckUtils]: 0: Hoare triple {8339#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {8333#true} is VALID [2022-04-14 23:28:49,736 INFO L290 TraceCheckUtils]: 1: Hoare triple {8333#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8333#true} is VALID [2022-04-14 23:28:49,737 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {8333#true} {8333#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8333#true} is VALID [2022-04-14 23:28:49,737 INFO L272 TraceCheckUtils]: 0: Hoare triple {8333#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8339#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:49,737 INFO L290 TraceCheckUtils]: 1: Hoare triple {8339#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {8333#true} is VALID [2022-04-14 23:28:49,737 INFO L290 TraceCheckUtils]: 2: Hoare triple {8333#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8333#true} is VALID [2022-04-14 23:28:49,737 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8333#true} {8333#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8333#true} is VALID [2022-04-14 23:28:49,738 INFO L272 TraceCheckUtils]: 4: Hoare triple {8333#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8333#true} is VALID [2022-04-14 23:28:49,738 INFO L290 TraceCheckUtils]: 5: Hoare triple {8333#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {8333#true} is VALID [2022-04-14 23:28:49,738 INFO L290 TraceCheckUtils]: 6: Hoare triple {8333#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {8333#true} is VALID [2022-04-14 23:28:49,738 INFO L290 TraceCheckUtils]: 7: Hoare triple {8333#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {8333#true} is VALID [2022-04-14 23:28:49,738 INFO L290 TraceCheckUtils]: 8: Hoare triple {8333#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {8333#true} is VALID [2022-04-14 23:28:49,738 INFO L290 TraceCheckUtils]: 9: Hoare triple {8333#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {8333#true} is VALID [2022-04-14 23:28:49,738 INFO L290 TraceCheckUtils]: 10: Hoare triple {8333#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {8333#true} is VALID [2022-04-14 23:28:49,738 INFO L290 TraceCheckUtils]: 11: Hoare triple {8333#true} [172] L61-1-->L65-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {8333#true} is VALID [2022-04-14 23:28:49,739 INFO L290 TraceCheckUtils]: 12: Hoare triple {8333#true} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {8338#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:49,739 INFO L290 TraceCheckUtils]: 13: Hoare triple {8338#(= main_~lk5~0 1)} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {8338#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:49,739 INFO L290 TraceCheckUtils]: 14: Hoare triple {8338#(= main_~lk5~0 1)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {8338#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:49,740 INFO L290 TraceCheckUtils]: 15: Hoare triple {8338#(= main_~lk5~0 1)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {8338#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:49,740 INFO L290 TraceCheckUtils]: 16: Hoare triple {8338#(= main_~lk5~0 1)} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {8338#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:49,740 INFO L290 TraceCheckUtils]: 17: Hoare triple {8338#(= main_~lk5~0 1)} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {8338#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:49,741 INFO L290 TraceCheckUtils]: 18: Hoare triple {8338#(= main_~lk5~0 1)} [194] L93-1-->L98-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {8338#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:49,741 INFO L290 TraceCheckUtils]: 19: Hoare triple {8338#(= main_~lk5~0 1)} [197] L98-1-->L104: Formula: (not (= v_main_~p5~0_4 0)) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4} AuxVars[] AssignedVars[] {8338#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:49,741 INFO L290 TraceCheckUtils]: 20: Hoare triple {8338#(= main_~lk5~0 1)} [199] L104-->L114-1: Formula: (not (= v_main_~lk5~0_4 1)) InVars {main_~lk5~0=v_main_~lk5~0_4} OutVars{main_~lk5~0=v_main_~lk5~0_4} AuxVars[] AssignedVars[] {8334#false} is VALID [2022-04-14 23:28:49,742 INFO L290 TraceCheckUtils]: 21: Hoare triple {8334#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8334#false} is VALID [2022-04-14 23:28:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:49,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067095844] [2022-04-14 23:28:49,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067095844] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:49,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:49,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:49,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935381155] [2022-04-14 23:28:49,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-14 23:28:49,743 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:49,743 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,757 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:49,757 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:49,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:49,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:49,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:49,758 INFO L87 Difference]: Start difference. First operand 361 states and 519 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:49,878 INFO L93 Difference]: Finished difference Result 619 states and 888 transitions. [2022-04-14 23:28:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:49,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-14 23:28:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2022-04-14 23:28:49,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2022-04-14 23:28:49,881 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 78 transitions. [2022-04-14 23:28:49,934 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 78 edges. 78 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:49,952 INFO L225 Difference]: With dead ends: 619 [2022-04-14 23:28:49,952 INFO L226 Difference]: Without dead ends: 619 [2022-04-14 23:28:49,952 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:49,953 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 89 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:49,953 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 56 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-04-14 23:28:49,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 521. [2022-04-14 23:28:49,976 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:49,977 INFO L82 GeneralOperation]: Start isEquivalent. First operand 619 states. Second operand has 521 states, 517 states have (on average 1.4003868471953578) internal successors, (724), 517 states have internal predecessors, (724), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,978 INFO L74 IsIncluded]: Start isIncluded. First operand 619 states. Second operand has 521 states, 517 states have (on average 1.4003868471953578) internal successors, (724), 517 states have internal predecessors, (724), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,979 INFO L87 Difference]: Start difference. First operand 619 states. Second operand has 521 states, 517 states have (on average 1.4003868471953578) internal successors, (724), 517 states have internal predecessors, (724), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:49,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:49,997 INFO L93 Difference]: Finished difference Result 619 states and 888 transitions. [2022-04-14 23:28:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 888 transitions. [2022-04-14 23:28:49,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:49,998 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:49,999 INFO L74 IsIncluded]: Start isIncluded. First operand has 521 states, 517 states have (on average 1.4003868471953578) internal successors, (724), 517 states have internal predecessors, (724), 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) Second operand 619 states. [2022-04-14 23:28:49,999 INFO L87 Difference]: Start difference. First operand has 521 states, 517 states have (on average 1.4003868471953578) internal successors, (724), 517 states have internal predecessors, (724), 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) Second operand 619 states. [2022-04-14 23:28:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:50,019 INFO L93 Difference]: Finished difference Result 619 states and 888 transitions. [2022-04-14 23:28:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 888 transitions. [2022-04-14 23:28:50,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:50,020 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:50,020 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:50,020 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 517 states have (on average 1.4003868471953578) internal successors, (724), 517 states have internal predecessors, (724), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 727 transitions. [2022-04-14 23:28:50,035 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 727 transitions. Word has length 22 [2022-04-14 23:28:50,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:50,035 INFO L478 AbstractCegarLoop]: Abstraction has 521 states and 727 transitions. [2022-04-14 23:28:50,035 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,035 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 727 transitions. [2022-04-14 23:28:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-14 23:28:50,036 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:50,036 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:50,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-14 23:28:50,036 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:50,037 INFO L85 PathProgramCache]: Analyzing trace with hash -330613119, now seen corresponding path program 1 times [2022-04-14 23:28:50,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:50,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039900829] [2022-04-14 23:28:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:50,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:50,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:50,067 INFO L290 TraceCheckUtils]: 0: Hoare triple {10729#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {10723#true} is VALID [2022-04-14 23:28:50,067 INFO L290 TraceCheckUtils]: 1: Hoare triple {10723#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10723#true} is VALID [2022-04-14 23:28:50,067 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {10723#true} {10723#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10723#true} is VALID [2022-04-14 23:28:50,068 INFO L272 TraceCheckUtils]: 0: Hoare triple {10723#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10729#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:50,068 INFO L290 TraceCheckUtils]: 1: Hoare triple {10729#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {10723#true} is VALID [2022-04-14 23:28:50,068 INFO L290 TraceCheckUtils]: 2: Hoare triple {10723#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10723#true} is VALID [2022-04-14 23:28:50,068 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {10723#true} {10723#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10723#true} is VALID [2022-04-14 23:28:50,068 INFO L272 TraceCheckUtils]: 4: Hoare triple {10723#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10723#true} is VALID [2022-04-14 23:28:50,068 INFO L290 TraceCheckUtils]: 5: Hoare triple {10723#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {10723#true} is VALID [2022-04-14 23:28:50,069 INFO L290 TraceCheckUtils]: 6: Hoare triple {10723#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {10723#true} is VALID [2022-04-14 23:28:50,069 INFO L290 TraceCheckUtils]: 7: Hoare triple {10723#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {10723#true} is VALID [2022-04-14 23:28:50,069 INFO L290 TraceCheckUtils]: 8: Hoare triple {10723#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {10723#true} is VALID [2022-04-14 23:28:50,069 INFO L290 TraceCheckUtils]: 9: Hoare triple {10723#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {10723#true} is VALID [2022-04-14 23:28:50,069 INFO L290 TraceCheckUtils]: 10: Hoare triple {10723#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {10723#true} is VALID [2022-04-14 23:28:50,069 INFO L290 TraceCheckUtils]: 11: Hoare triple {10723#true} [172] L61-1-->L65-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {10723#true} is VALID [2022-04-14 23:28:50,069 INFO L290 TraceCheckUtils]: 12: Hoare triple {10723#true} [174] L65-1-->L69-1: Formula: (= v_main_~p5~0_3 0) InVars {main_~p5~0=v_main_~p5~0_3} OutVars{main_~p5~0=v_main_~p5~0_3} AuxVars[] AssignedVars[] {10728#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:50,070 INFO L290 TraceCheckUtils]: 13: Hoare triple {10728#(= main_~p5~0 0)} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {10728#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:50,070 INFO L290 TraceCheckUtils]: 14: Hoare triple {10728#(= main_~p5~0 0)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {10728#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:50,070 INFO L290 TraceCheckUtils]: 15: Hoare triple {10728#(= main_~p5~0 0)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {10728#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:50,071 INFO L290 TraceCheckUtils]: 16: Hoare triple {10728#(= main_~p5~0 0)} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {10728#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:50,071 INFO L290 TraceCheckUtils]: 17: Hoare triple {10728#(= main_~p5~0 0)} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {10728#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:50,071 INFO L290 TraceCheckUtils]: 18: Hoare triple {10728#(= main_~p5~0 0)} [194] L93-1-->L98-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {10728#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:50,072 INFO L290 TraceCheckUtils]: 19: Hoare triple {10728#(= main_~p5~0 0)} [197] L98-1-->L104: Formula: (not (= v_main_~p5~0_4 0)) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4} AuxVars[] AssignedVars[] {10724#false} is VALID [2022-04-14 23:28:50,072 INFO L290 TraceCheckUtils]: 20: Hoare triple {10724#false} [199] L104-->L114-1: Formula: (not (= v_main_~lk5~0_4 1)) InVars {main_~lk5~0=v_main_~lk5~0_4} OutVars{main_~lk5~0=v_main_~lk5~0_4} AuxVars[] AssignedVars[] {10724#false} is VALID [2022-04-14 23:28:50,072 INFO L290 TraceCheckUtils]: 21: Hoare triple {10724#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10724#false} is VALID [2022-04-14 23:28:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:50,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:50,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039900829] [2022-04-14 23:28:50,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039900829] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:50,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:50,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:50,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364535661] [2022-04-14 23:28:50,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:50,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-14 23:28:50,073 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:50,073 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,086 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:50,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:50,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:50,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:50,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:50,087 INFO L87 Difference]: Start difference. First operand 521 states and 727 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:50,203 INFO L93 Difference]: Finished difference Result 683 states and 920 transitions. [2022-04-14 23:28:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:50,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-14 23:28:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2022-04-14 23:28:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2022-04-14 23:28:50,205 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 85 transitions. [2022-04-14 23:28:50,263 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 85 edges. 85 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:50,284 INFO L225 Difference]: With dead ends: 683 [2022-04-14 23:28:50,284 INFO L226 Difference]: Without dead ends: 683 [2022-04-14 23:28:50,284 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:50,286 INFO L913 BasicCegarLoop]: 72 mSDtfsCounter, 79 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:50,286 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 79 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-04-14 23:28:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 681. [2022-04-14 23:28:50,297 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:50,298 INFO L82 GeneralOperation]: Start isEquivalent. First operand 683 states. Second operand has 681 states, 677 states have (on average 1.3530280649926145) internal successors, (916), 677 states have internal predecessors, (916), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,300 INFO L74 IsIncluded]: Start isIncluded. First operand 683 states. Second operand has 681 states, 677 states have (on average 1.3530280649926145) internal successors, (916), 677 states have internal predecessors, (916), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,301 INFO L87 Difference]: Start difference. First operand 683 states. Second operand has 681 states, 677 states have (on average 1.3530280649926145) internal successors, (916), 677 states have internal predecessors, (916), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:50,322 INFO L93 Difference]: Finished difference Result 683 states and 920 transitions. [2022-04-14 23:28:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 920 transitions. [2022-04-14 23:28:50,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:50,323 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:50,324 INFO L74 IsIncluded]: Start isIncluded. First operand has 681 states, 677 states have (on average 1.3530280649926145) internal successors, (916), 677 states have internal predecessors, (916), 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) Second operand 683 states. [2022-04-14 23:28:50,325 INFO L87 Difference]: Start difference. First operand has 681 states, 677 states have (on average 1.3530280649926145) internal successors, (916), 677 states have internal predecessors, (916), 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) Second operand 683 states. [2022-04-14 23:28:50,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:50,346 INFO L93 Difference]: Finished difference Result 683 states and 920 transitions. [2022-04-14 23:28:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 920 transitions. [2022-04-14 23:28:50,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:50,348 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:50,348 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:50,348 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 677 states have (on average 1.3530280649926145) internal successors, (916), 677 states have internal predecessors, (916), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 919 transitions. [2022-04-14 23:28:50,370 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 919 transitions. Word has length 22 [2022-04-14 23:28:50,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:50,370 INFO L478 AbstractCegarLoop]: Abstraction has 681 states and 919 transitions. [2022-04-14 23:28:50,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 919 transitions. [2022-04-14 23:28:50,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-14 23:28:50,371 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:50,371 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:50,371 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-14 23:28:50,371 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:50,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:50,372 INFO L85 PathProgramCache]: Analyzing trace with hash 137911718, now seen corresponding path program 1 times [2022-04-14 23:28:50,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:50,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161958276] [2022-04-14 23:28:50,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:50,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:50,418 INFO L290 TraceCheckUtils]: 0: Hoare triple {13471#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {13465#true} is VALID [2022-04-14 23:28:50,418 INFO L290 TraceCheckUtils]: 1: Hoare triple {13465#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {13465#true} is VALID [2022-04-14 23:28:50,418 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {13465#true} {13465#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {13465#true} is VALID [2022-04-14 23:28:50,419 INFO L272 TraceCheckUtils]: 0: Hoare triple {13465#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {13471#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:50,419 INFO L290 TraceCheckUtils]: 1: Hoare triple {13471#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {13465#true} is VALID [2022-04-14 23:28:50,420 INFO L290 TraceCheckUtils]: 2: Hoare triple {13465#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {13465#true} is VALID [2022-04-14 23:28:50,420 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {13465#true} {13465#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {13465#true} is VALID [2022-04-14 23:28:50,420 INFO L272 TraceCheckUtils]: 4: Hoare triple {13465#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {13465#true} is VALID [2022-04-14 23:28:50,421 INFO L290 TraceCheckUtils]: 5: Hoare triple {13465#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {13465#true} is VALID [2022-04-14 23:28:50,421 INFO L290 TraceCheckUtils]: 6: Hoare triple {13465#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {13465#true} is VALID [2022-04-14 23:28:50,421 INFO L290 TraceCheckUtils]: 7: Hoare triple {13465#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {13465#true} is VALID [2022-04-14 23:28:50,421 INFO L290 TraceCheckUtils]: 8: Hoare triple {13465#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {13465#true} is VALID [2022-04-14 23:28:50,421 INFO L290 TraceCheckUtils]: 9: Hoare triple {13465#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {13465#true} is VALID [2022-04-14 23:28:50,421 INFO L290 TraceCheckUtils]: 10: Hoare triple {13465#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {13465#true} is VALID [2022-04-14 23:28:50,421 INFO L290 TraceCheckUtils]: 11: Hoare triple {13465#true} [172] L61-1-->L65-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {13465#true} is VALID [2022-04-14 23:28:50,422 INFO L290 TraceCheckUtils]: 12: Hoare triple {13465#true} [173] L65-1-->L69-1: Formula: (and (= v_main_~lk5~0_3 1) (not (= v_main_~p5~0_2 0))) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2, main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[main_~lk5~0] {13470#(not (= main_~p5~0 0))} is VALID [2022-04-14 23:28:50,422 INFO L290 TraceCheckUtils]: 13: Hoare triple {13470#(not (= main_~p5~0 0))} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {13470#(not (= main_~p5~0 0))} is VALID [2022-04-14 23:28:50,423 INFO L290 TraceCheckUtils]: 14: Hoare triple {13470#(not (= main_~p5~0 0))} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {13470#(not (= main_~p5~0 0))} is VALID [2022-04-14 23:28:50,424 INFO L290 TraceCheckUtils]: 15: Hoare triple {13470#(not (= main_~p5~0 0))} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {13470#(not (= main_~p5~0 0))} is VALID [2022-04-14 23:28:50,424 INFO L290 TraceCheckUtils]: 16: Hoare triple {13470#(not (= main_~p5~0 0))} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {13470#(not (= main_~p5~0 0))} is VALID [2022-04-14 23:28:50,425 INFO L290 TraceCheckUtils]: 17: Hoare triple {13470#(not (= main_~p5~0 0))} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {13470#(not (= main_~p5~0 0))} is VALID [2022-04-14 23:28:50,425 INFO L290 TraceCheckUtils]: 18: Hoare triple {13470#(not (= main_~p5~0 0))} [194] L93-1-->L98-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {13470#(not (= main_~p5~0 0))} is VALID [2022-04-14 23:28:50,425 INFO L290 TraceCheckUtils]: 19: Hoare triple {13470#(not (= main_~p5~0 0))} [198] L98-1-->L103-1: Formula: (= v_main_~p5~0_5 0) InVars {main_~p5~0=v_main_~p5~0_5} OutVars{main_~p5~0=v_main_~p5~0_5} AuxVars[] AssignedVars[] {13466#false} is VALID [2022-04-14 23:28:50,425 INFO L290 TraceCheckUtils]: 20: Hoare triple {13466#false} [201] L103-1-->L109: Formula: (not (= v_main_~p6~0_5 0)) InVars {main_~p6~0=v_main_~p6~0_5} OutVars{main_~p6~0=v_main_~p6~0_5} AuxVars[] AssignedVars[] {13466#false} is VALID [2022-04-14 23:28:50,425 INFO L290 TraceCheckUtils]: 21: Hoare triple {13466#false} [203] L109-->L114-1: Formula: (not (= v_main_~lk6~0_4 1)) InVars {main_~lk6~0=v_main_~lk6~0_4} OutVars{main_~lk6~0=v_main_~lk6~0_4} AuxVars[] AssignedVars[] {13466#false} is VALID [2022-04-14 23:28:50,425 INFO L290 TraceCheckUtils]: 22: Hoare triple {13466#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {13466#false} is VALID [2022-04-14 23:28:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:50,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:50,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161958276] [2022-04-14 23:28:50,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161958276] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:50,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:50,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477863658] [2022-04-14 23:28:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:50,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-14 23:28:50,427 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:50,427 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,440 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:50,440 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:50,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:50,441 INFO L87 Difference]: Start difference. First operand 681 states and 919 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:50,567 INFO L93 Difference]: Finished difference Result 699 states and 920 transitions. [2022-04-14 23:28:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:50,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-14 23:28:50,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:50,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2022-04-14 23:28:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2022-04-14 23:28:50,569 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 84 transitions. [2022-04-14 23:28:50,630 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 84 edges. 84 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:50,652 INFO L225 Difference]: With dead ends: 699 [2022-04-14 23:28:50,652 INFO L226 Difference]: Without dead ends: 699 [2022-04-14 23:28:50,653 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:50,654 INFO L913 BasicCegarLoop]: 64 mSDtfsCounter, 88 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:50,655 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 71 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:50,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-04-14 23:28:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2022-04-14 23:28:50,664 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:50,665 INFO L82 GeneralOperation]: Start isEquivalent. First operand 699 states. Second operand has 697 states, 693 states have (on average 1.3217893217893217) internal successors, (916), 693 states have internal predecessors, (916), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,667 INFO L74 IsIncluded]: Start isIncluded. First operand 699 states. Second operand has 697 states, 693 states have (on average 1.3217893217893217) internal successors, (916), 693 states have internal predecessors, (916), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,668 INFO L87 Difference]: Start difference. First operand 699 states. Second operand has 697 states, 693 states have (on average 1.3217893217893217) internal successors, (916), 693 states have internal predecessors, (916), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:50,691 INFO L93 Difference]: Finished difference Result 699 states and 920 transitions. [2022-04-14 23:28:50,691 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 920 transitions. [2022-04-14 23:28:50,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:50,692 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:50,693 INFO L74 IsIncluded]: Start isIncluded. First operand has 697 states, 693 states have (on average 1.3217893217893217) internal successors, (916), 693 states have internal predecessors, (916), 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) Second operand 699 states. [2022-04-14 23:28:50,694 INFO L87 Difference]: Start difference. First operand has 697 states, 693 states have (on average 1.3217893217893217) internal successors, (916), 693 states have internal predecessors, (916), 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) Second operand 699 states. [2022-04-14 23:28:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:50,716 INFO L93 Difference]: Finished difference Result 699 states and 920 transitions. [2022-04-14 23:28:50,716 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 920 transitions. [2022-04-14 23:28:50,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:50,718 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:50,718 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:50,718 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 693 states have (on average 1.3217893217893217) internal successors, (916), 693 states have internal predecessors, (916), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 919 transitions. [2022-04-14 23:28:50,740 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 919 transitions. Word has length 23 [2022-04-14 23:28:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:50,740 INFO L478 AbstractCegarLoop]: Abstraction has 697 states and 919 transitions. [2022-04-14 23:28:50,740 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 919 transitions. [2022-04-14 23:28:50,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-14 23:28:50,742 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:50,742 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:50,742 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-14 23:28:50,742 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:50,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:50,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1659039641, now seen corresponding path program 1 times [2022-04-14 23:28:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:50,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452576770] [2022-04-14 23:28:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:50,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:50,784 INFO L290 TraceCheckUtils]: 0: Hoare triple {16277#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {16271#true} is VALID [2022-04-14 23:28:50,784 INFO L290 TraceCheckUtils]: 1: Hoare triple {16271#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16271#true} is VALID [2022-04-14 23:28:50,784 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {16271#true} {16271#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16271#true} is VALID [2022-04-14 23:28:50,785 INFO L272 TraceCheckUtils]: 0: Hoare triple {16271#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16277#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:50,785 INFO L290 TraceCheckUtils]: 1: Hoare triple {16277#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {16271#true} is VALID [2022-04-14 23:28:50,785 INFO L290 TraceCheckUtils]: 2: Hoare triple {16271#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16271#true} is VALID [2022-04-14 23:28:50,785 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {16271#true} {16271#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16271#true} is VALID [2022-04-14 23:28:50,785 INFO L272 TraceCheckUtils]: 4: Hoare triple {16271#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16271#true} is VALID [2022-04-14 23:28:50,785 INFO L290 TraceCheckUtils]: 5: Hoare triple {16271#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {16271#true} is VALID [2022-04-14 23:28:50,785 INFO L290 TraceCheckUtils]: 6: Hoare triple {16271#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {16271#true} is VALID [2022-04-14 23:28:50,786 INFO L290 TraceCheckUtils]: 7: Hoare triple {16271#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {16271#true} is VALID [2022-04-14 23:28:50,786 INFO L290 TraceCheckUtils]: 8: Hoare triple {16271#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {16271#true} is VALID [2022-04-14 23:28:50,786 INFO L290 TraceCheckUtils]: 9: Hoare triple {16271#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {16271#true} is VALID [2022-04-14 23:28:50,786 INFO L290 TraceCheckUtils]: 10: Hoare triple {16271#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {16271#true} is VALID [2022-04-14 23:28:50,786 INFO L290 TraceCheckUtils]: 11: Hoare triple {16271#true} [172] L61-1-->L65-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {16271#true} is VALID [2022-04-14 23:28:50,786 INFO L290 TraceCheckUtils]: 12: Hoare triple {16271#true} [174] L65-1-->L69-1: Formula: (= v_main_~p5~0_3 0) InVars {main_~p5~0=v_main_~p5~0_3} OutVars{main_~p5~0=v_main_~p5~0_3} AuxVars[] AssignedVars[] {16271#true} is VALID [2022-04-14 23:28:50,786 INFO L290 TraceCheckUtils]: 13: Hoare triple {16271#true} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {16276#(= main_~p6~0 0)} is VALID [2022-04-14 23:28:50,787 INFO L290 TraceCheckUtils]: 14: Hoare triple {16276#(= main_~p6~0 0)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {16276#(= main_~p6~0 0)} is VALID [2022-04-14 23:28:50,787 INFO L290 TraceCheckUtils]: 15: Hoare triple {16276#(= main_~p6~0 0)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {16276#(= main_~p6~0 0)} is VALID [2022-04-14 23:28:50,787 INFO L290 TraceCheckUtils]: 16: Hoare triple {16276#(= main_~p6~0 0)} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {16276#(= main_~p6~0 0)} is VALID [2022-04-14 23:28:50,788 INFO L290 TraceCheckUtils]: 17: Hoare triple {16276#(= main_~p6~0 0)} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {16276#(= main_~p6~0 0)} is VALID [2022-04-14 23:28:50,788 INFO L290 TraceCheckUtils]: 18: Hoare triple {16276#(= main_~p6~0 0)} [194] L93-1-->L98-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {16276#(= main_~p6~0 0)} is VALID [2022-04-14 23:28:50,789 INFO L290 TraceCheckUtils]: 19: Hoare triple {16276#(= main_~p6~0 0)} [198] L98-1-->L103-1: Formula: (= v_main_~p5~0_5 0) InVars {main_~p5~0=v_main_~p5~0_5} OutVars{main_~p5~0=v_main_~p5~0_5} AuxVars[] AssignedVars[] {16276#(= main_~p6~0 0)} is VALID [2022-04-14 23:28:50,789 INFO L290 TraceCheckUtils]: 20: Hoare triple {16276#(= main_~p6~0 0)} [201] L103-1-->L109: Formula: (not (= v_main_~p6~0_5 0)) InVars {main_~p6~0=v_main_~p6~0_5} OutVars{main_~p6~0=v_main_~p6~0_5} AuxVars[] AssignedVars[] {16272#false} is VALID [2022-04-14 23:28:50,792 INFO L290 TraceCheckUtils]: 21: Hoare triple {16272#false} [203] L109-->L114-1: Formula: (not (= v_main_~lk6~0_4 1)) InVars {main_~lk6~0=v_main_~lk6~0_4} OutVars{main_~lk6~0=v_main_~lk6~0_4} AuxVars[] AssignedVars[] {16272#false} is VALID [2022-04-14 23:28:50,793 INFO L290 TraceCheckUtils]: 22: Hoare triple {16272#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16272#false} is VALID [2022-04-14 23:28:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:50,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:50,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452576770] [2022-04-14 23:28:50,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452576770] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:50,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:50,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:50,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239455679] [2022-04-14 23:28:50,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:50,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-14 23:28:50,796 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:50,796 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,810 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:50,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:50,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:50,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:50,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:50,811 INFO L87 Difference]: Start difference. First operand 697 states and 919 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:50,978 INFO L93 Difference]: Finished difference Result 1323 states and 1640 transitions. [2022-04-14 23:28:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:50,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-14 23:28:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2022-04-14 23:28:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2022-04-14 23:28:50,983 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 84 transitions. [2022-04-14 23:28:51,050 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 84 edges. 84 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:51,129 INFO L225 Difference]: With dead ends: 1323 [2022-04-14 23:28:51,129 INFO L226 Difference]: Without dead ends: 1323 [2022-04-14 23:28:51,129 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:51,130 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 92 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:51,130 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 65 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:51,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2022-04-14 23:28:51,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1321. [2022-04-14 23:28:51,172 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:51,174 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1323 states. Second operand has 1321 states, 1317 states have (on average 1.2422171602126044) internal successors, (1636), 1317 states have internal predecessors, (1636), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,175 INFO L74 IsIncluded]: Start isIncluded. First operand 1323 states. Second operand has 1321 states, 1317 states have (on average 1.2422171602126044) internal successors, (1636), 1317 states have internal predecessors, (1636), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,177 INFO L87 Difference]: Start difference. First operand 1323 states. Second operand has 1321 states, 1317 states have (on average 1.2422171602126044) internal successors, (1636), 1317 states have internal predecessors, (1636), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:51,245 INFO L93 Difference]: Finished difference Result 1323 states and 1640 transitions. [2022-04-14 23:28:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1640 transitions. [2022-04-14 23:28:51,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:51,248 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:51,250 INFO L74 IsIncluded]: Start isIncluded. First operand has 1321 states, 1317 states have (on average 1.2422171602126044) internal successors, (1636), 1317 states have internal predecessors, (1636), 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) Second operand 1323 states. [2022-04-14 23:28:51,251 INFO L87 Difference]: Start difference. First operand has 1321 states, 1317 states have (on average 1.2422171602126044) internal successors, (1636), 1317 states have internal predecessors, (1636), 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) Second operand 1323 states. [2022-04-14 23:28:51,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:51,323 INFO L93 Difference]: Finished difference Result 1323 states and 1640 transitions. [2022-04-14 23:28:51,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1640 transitions. [2022-04-14 23:28:51,325 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:51,325 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:51,325 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:51,325 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1317 states have (on average 1.2422171602126044) internal successors, (1636), 1317 states have internal predecessors, (1636), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1639 transitions. [2022-04-14 23:28:51,401 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1639 transitions. Word has length 23 [2022-04-14 23:28:51,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:51,402 INFO L478 AbstractCegarLoop]: Abstraction has 1321 states and 1639 transitions. [2022-04-14 23:28:51,402 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1639 transitions. [2022-04-14 23:28:51,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-14 23:28:51,403 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:51,404 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:51,404 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-14 23:28:51,404 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:51,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1462526136, now seen corresponding path program 1 times [2022-04-14 23:28:51,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:51,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307058756] [2022-04-14 23:28:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:51,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:51,433 INFO L290 TraceCheckUtils]: 0: Hoare triple {21579#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {21573#true} is VALID [2022-04-14 23:28:51,433 INFO L290 TraceCheckUtils]: 1: Hoare triple {21573#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21573#true} is VALID [2022-04-14 23:28:51,434 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {21573#true} {21573#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21573#true} is VALID [2022-04-14 23:28:51,434 INFO L272 TraceCheckUtils]: 0: Hoare triple {21573#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21579#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:51,434 INFO L290 TraceCheckUtils]: 1: Hoare triple {21579#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {21573#true} is VALID [2022-04-14 23:28:51,434 INFO L290 TraceCheckUtils]: 2: Hoare triple {21573#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21573#true} is VALID [2022-04-14 23:28:51,435 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {21573#true} {21573#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21573#true} is VALID [2022-04-14 23:28:51,435 INFO L272 TraceCheckUtils]: 4: Hoare triple {21573#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21573#true} is VALID [2022-04-14 23:28:51,435 INFO L290 TraceCheckUtils]: 5: Hoare triple {21573#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {21573#true} is VALID [2022-04-14 23:28:51,435 INFO L290 TraceCheckUtils]: 6: Hoare triple {21573#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {21573#true} is VALID [2022-04-14 23:28:51,435 INFO L290 TraceCheckUtils]: 7: Hoare triple {21573#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {21573#true} is VALID [2022-04-14 23:28:51,435 INFO L290 TraceCheckUtils]: 8: Hoare triple {21573#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {21573#true} is VALID [2022-04-14 23:28:51,435 INFO L290 TraceCheckUtils]: 9: Hoare triple {21573#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {21573#true} is VALID [2022-04-14 23:28:51,435 INFO L290 TraceCheckUtils]: 10: Hoare triple {21573#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {21573#true} is VALID [2022-04-14 23:28:51,436 INFO L290 TraceCheckUtils]: 11: Hoare triple {21573#true} [172] L61-1-->L65-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {21573#true} is VALID [2022-04-14 23:28:51,436 INFO L290 TraceCheckUtils]: 12: Hoare triple {21573#true} [174] L65-1-->L69-1: Formula: (= v_main_~p5~0_3 0) InVars {main_~p5~0=v_main_~p5~0_3} OutVars{main_~p5~0=v_main_~p5~0_3} AuxVars[] AssignedVars[] {21573#true} is VALID [2022-04-14 23:28:51,436 INFO L290 TraceCheckUtils]: 13: Hoare triple {21573#true} [175] L69-1-->L73-1: Formula: (and (= v_main_~lk6~0_3 1) (not (= v_main_~p6~0_3 0))) InVars {main_~p6~0=v_main_~p6~0_3} OutVars{main_~lk6~0=v_main_~lk6~0_3, main_~p6~0=v_main_~p6~0_3} AuxVars[] AssignedVars[main_~lk6~0] {21578#(= main_~lk6~0 1)} is VALID [2022-04-14 23:28:51,436 INFO L290 TraceCheckUtils]: 14: Hoare triple {21578#(= main_~lk6~0 1)} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {21578#(= main_~lk6~0 1)} is VALID [2022-04-14 23:28:51,437 INFO L290 TraceCheckUtils]: 15: Hoare triple {21578#(= main_~lk6~0 1)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {21578#(= main_~lk6~0 1)} is VALID [2022-04-14 23:28:51,437 INFO L290 TraceCheckUtils]: 16: Hoare triple {21578#(= main_~lk6~0 1)} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {21578#(= main_~lk6~0 1)} is VALID [2022-04-14 23:28:51,437 INFO L290 TraceCheckUtils]: 17: Hoare triple {21578#(= main_~lk6~0 1)} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {21578#(= main_~lk6~0 1)} is VALID [2022-04-14 23:28:51,438 INFO L290 TraceCheckUtils]: 18: Hoare triple {21578#(= main_~lk6~0 1)} [194] L93-1-->L98-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {21578#(= main_~lk6~0 1)} is VALID [2022-04-14 23:28:51,438 INFO L290 TraceCheckUtils]: 19: Hoare triple {21578#(= main_~lk6~0 1)} [198] L98-1-->L103-1: Formula: (= v_main_~p5~0_5 0) InVars {main_~p5~0=v_main_~p5~0_5} OutVars{main_~p5~0=v_main_~p5~0_5} AuxVars[] AssignedVars[] {21578#(= main_~lk6~0 1)} is VALID [2022-04-14 23:28:51,438 INFO L290 TraceCheckUtils]: 20: Hoare triple {21578#(= main_~lk6~0 1)} [201] L103-1-->L109: Formula: (not (= v_main_~p6~0_5 0)) InVars {main_~p6~0=v_main_~p6~0_5} OutVars{main_~p6~0=v_main_~p6~0_5} AuxVars[] AssignedVars[] {21578#(= main_~lk6~0 1)} is VALID [2022-04-14 23:28:51,439 INFO L290 TraceCheckUtils]: 21: Hoare triple {21578#(= main_~lk6~0 1)} [203] L109-->L114-1: Formula: (not (= v_main_~lk6~0_4 1)) InVars {main_~lk6~0=v_main_~lk6~0_4} OutVars{main_~lk6~0=v_main_~lk6~0_4} AuxVars[] AssignedVars[] {21574#false} is VALID [2022-04-14 23:28:51,439 INFO L290 TraceCheckUtils]: 22: Hoare triple {21574#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21574#false} is VALID [2022-04-14 23:28:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:51,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:51,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307058756] [2022-04-14 23:28:51,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307058756] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:51,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:51,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:51,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032576913] [2022-04-14 23:28:51,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:51,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-14 23:28:51,440 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:51,441 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,455 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:51,455 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:51,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:51,456 INFO L87 Difference]: Start difference. First operand 1321 states and 1639 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:51,652 INFO L93 Difference]: Finished difference Result 1451 states and 1800 transitions. [2022-04-14 23:28:51,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:51,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-14 23:28:51,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2022-04-14 23:28:51,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2022-04-14 23:28:51,654 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 71 transitions. [2022-04-14 23:28:51,712 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:51,796 INFO L225 Difference]: With dead ends: 1451 [2022-04-14 23:28:51,796 INFO L226 Difference]: Without dead ends: 1451 [2022-04-14 23:28:51,797 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:51,797 INFO L913 BasicCegarLoop]: 69 mSDtfsCounter, 57 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:51,797 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 76 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:51,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2022-04-14 23:28:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1321. [2022-04-14 23:28:51,816 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:51,817 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1451 states. Second operand has 1321 states, 1317 states have (on average 1.2179195140470767) internal successors, (1604), 1317 states have internal predecessors, (1604), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,819 INFO L74 IsIncluded]: Start isIncluded. First operand 1451 states. Second operand has 1321 states, 1317 states have (on average 1.2179195140470767) internal successors, (1604), 1317 states have internal predecessors, (1604), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,820 INFO L87 Difference]: Start difference. First operand 1451 states. Second operand has 1321 states, 1317 states have (on average 1.2179195140470767) internal successors, (1604), 1317 states have internal predecessors, (1604), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:51,899 INFO L93 Difference]: Finished difference Result 1451 states and 1800 transitions. [2022-04-14 23:28:51,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1800 transitions. [2022-04-14 23:28:51,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:51,902 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:51,903 INFO L74 IsIncluded]: Start isIncluded. First operand has 1321 states, 1317 states have (on average 1.2179195140470767) internal successors, (1604), 1317 states have internal predecessors, (1604), 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) Second operand 1451 states. [2022-04-14 23:28:51,905 INFO L87 Difference]: Start difference. First operand has 1321 states, 1317 states have (on average 1.2179195140470767) internal successors, (1604), 1317 states have internal predecessors, (1604), 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) Second operand 1451 states. [2022-04-14 23:28:51,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:51,983 INFO L93 Difference]: Finished difference Result 1451 states and 1800 transitions. [2022-04-14 23:28:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1800 transitions. [2022-04-14 23:28:51,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:51,986 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:51,986 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:51,986 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1317 states have (on average 1.2179195140470767) internal successors, (1604), 1317 states have internal predecessors, (1604), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1607 transitions. [2022-04-14 23:28:52,054 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1607 transitions. Word has length 23 [2022-04-14 23:28:52,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:52,054 INFO L478 AbstractCegarLoop]: Abstraction has 1321 states and 1607 transitions. [2022-04-14 23:28:52,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:52,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1607 transitions. [2022-04-14 23:28:52,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-14 23:28:52,056 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:52,056 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:52,056 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-14 23:28:52,057 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash 109411261, now seen corresponding path program 1 times [2022-04-14 23:28:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:52,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114249425] [2022-04-14 23:28:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:52,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:52,084 INFO L290 TraceCheckUtils]: 0: Hoare triple {27265#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {27259#true} is VALID [2022-04-14 23:28:52,084 INFO L290 TraceCheckUtils]: 1: Hoare triple {27259#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,084 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {27259#true} {27259#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,085 INFO L272 TraceCheckUtils]: 0: Hoare triple {27259#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27265#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:52,085 INFO L290 TraceCheckUtils]: 1: Hoare triple {27265#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {27259#true} is VALID [2022-04-14 23:28:52,085 INFO L290 TraceCheckUtils]: 2: Hoare triple {27259#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,085 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {27259#true} {27259#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,085 INFO L272 TraceCheckUtils]: 4: Hoare triple {27259#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,085 INFO L290 TraceCheckUtils]: 5: Hoare triple {27259#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {27259#true} is VALID [2022-04-14 23:28:52,085 INFO L290 TraceCheckUtils]: 6: Hoare triple {27259#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {27259#true} is VALID [2022-04-14 23:28:52,086 INFO L290 TraceCheckUtils]: 7: Hoare triple {27259#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {27259#true} is VALID [2022-04-14 23:28:52,086 INFO L290 TraceCheckUtils]: 8: Hoare triple {27259#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,086 INFO L290 TraceCheckUtils]: 9: Hoare triple {27259#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,086 INFO L290 TraceCheckUtils]: 10: Hoare triple {27259#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,086 INFO L290 TraceCheckUtils]: 11: Hoare triple {27259#true} [172] L61-1-->L65-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,086 INFO L290 TraceCheckUtils]: 12: Hoare triple {27259#true} [174] L65-1-->L69-1: Formula: (= v_main_~p5~0_3 0) InVars {main_~p5~0=v_main_~p5~0_3} OutVars{main_~p5~0=v_main_~p5~0_3} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,086 INFO L290 TraceCheckUtils]: 13: Hoare triple {27259#true} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {27259#true} is VALID [2022-04-14 23:28:52,086 INFO L290 TraceCheckUtils]: 14: Hoare triple {27259#true} [177] L73-1-->L77-1: Formula: (and (not (= v_main_~p7~0_4 0)) (= v_main_~lk7~0_6 1)) InVars {main_~p7~0=v_main_~p7~0_4} OutVars{main_~lk7~0=v_main_~lk7~0_6, main_~p7~0=v_main_~p7~0_4} AuxVars[] AssignedVars[main_~lk7~0] {27264#(= main_~lk7~0 1)} is VALID [2022-04-14 23:28:52,087 INFO L290 TraceCheckUtils]: 15: Hoare triple {27264#(= main_~lk7~0 1)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {27264#(= main_~lk7~0 1)} is VALID [2022-04-14 23:28:52,087 INFO L290 TraceCheckUtils]: 16: Hoare triple {27264#(= main_~lk7~0 1)} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {27264#(= main_~lk7~0 1)} is VALID [2022-04-14 23:28:52,087 INFO L290 TraceCheckUtils]: 17: Hoare triple {27264#(= main_~lk7~0 1)} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {27264#(= main_~lk7~0 1)} is VALID [2022-04-14 23:28:52,088 INFO L290 TraceCheckUtils]: 18: Hoare triple {27264#(= main_~lk7~0 1)} [194] L93-1-->L98-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {27264#(= main_~lk7~0 1)} is VALID [2022-04-14 23:28:52,088 INFO L290 TraceCheckUtils]: 19: Hoare triple {27264#(= main_~lk7~0 1)} [198] L98-1-->L103-1: Formula: (= v_main_~p5~0_5 0) InVars {main_~p5~0=v_main_~p5~0_5} OutVars{main_~p5~0=v_main_~p5~0_5} AuxVars[] AssignedVars[] {27264#(= main_~lk7~0 1)} is VALID [2022-04-14 23:28:52,088 INFO L290 TraceCheckUtils]: 20: Hoare triple {27264#(= main_~lk7~0 1)} [202] L103-1-->L108-1: Formula: (= v_main_~p6~0_1 0) InVars {main_~p6~0=v_main_~p6~0_1} OutVars{main_~p6~0=v_main_~p6~0_1} AuxVars[] AssignedVars[] {27264#(= main_~lk7~0 1)} is VALID [2022-04-14 23:28:52,088 INFO L290 TraceCheckUtils]: 21: Hoare triple {27264#(= main_~lk7~0 1)} [205] L108-1-->L114: Formula: (not (= v_main_~p7~0_1 0)) InVars {main_~p7~0=v_main_~p7~0_1} OutVars{main_~p7~0=v_main_~p7~0_1} AuxVars[] AssignedVars[] {27264#(= main_~lk7~0 1)} is VALID [2022-04-14 23:28:52,089 INFO L290 TraceCheckUtils]: 22: Hoare triple {27264#(= main_~lk7~0 1)} [207] L114-->L114-1: Formula: (not (= v_main_~lk7~0_2 1)) InVars {main_~lk7~0=v_main_~lk7~0_2} OutVars{main_~lk7~0=v_main_~lk7~0_2} AuxVars[] AssignedVars[] {27260#false} is VALID [2022-04-14 23:28:52,089 INFO L290 TraceCheckUtils]: 23: Hoare triple {27260#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27260#false} is VALID [2022-04-14 23:28:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:52,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:52,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114249425] [2022-04-14 23:28:52,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114249425] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:52,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:52,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:52,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068280351] [2022-04-14 23:28:52,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:52,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-04-14 23:28:52,090 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:52,090 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:52,105 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:52,106 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:52,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:52,106 INFO L87 Difference]: Start difference. First operand 1321 states and 1607 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:52,389 INFO L93 Difference]: Finished difference Result 2153 states and 2535 transitions. [2022-04-14 23:28:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:52,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-04-14 23:28:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2022-04-14 23:28:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2022-04-14 23:28:52,392 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 69 transitions. [2022-04-14 23:28:52,442 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 69 edges. 69 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:52,580 INFO L225 Difference]: With dead ends: 2153 [2022-04-14 23:28:52,581 INFO L226 Difference]: Without dead ends: 2153 [2022-04-14 23:28:52,581 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:52,581 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 74 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:52,582 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 53 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2022-04-14 23:28:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2025. [2022-04-14 23:28:52,612 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:52,615 INFO L82 GeneralOperation]: Start isEquivalent. First operand 2153 states. Second operand has 2025 states, 2021 states have (on average 1.1895101434933202) internal successors, (2404), 2021 states have internal predecessors, (2404), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:52,616 INFO L74 IsIncluded]: Start isIncluded. First operand 2153 states. Second operand has 2025 states, 2021 states have (on average 1.1895101434933202) internal successors, (2404), 2021 states have internal predecessors, (2404), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:52,618 INFO L87 Difference]: Start difference. First operand 2153 states. Second operand has 2025 states, 2021 states have (on average 1.1895101434933202) internal successors, (2404), 2021 states have internal predecessors, (2404), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:52,766 INFO L93 Difference]: Finished difference Result 2153 states and 2535 transitions. [2022-04-14 23:28:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2535 transitions. [2022-04-14 23:28:52,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:52,772 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:52,775 INFO L74 IsIncluded]: Start isIncluded. First operand has 2025 states, 2021 states have (on average 1.1895101434933202) internal successors, (2404), 2021 states have internal predecessors, (2404), 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) Second operand 2153 states. [2022-04-14 23:28:52,776 INFO L87 Difference]: Start difference. First operand has 2025 states, 2021 states have (on average 1.1895101434933202) internal successors, (2404), 2021 states have internal predecessors, (2404), 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) Second operand 2153 states. [2022-04-14 23:28:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:52,936 INFO L93 Difference]: Finished difference Result 2153 states and 2535 transitions. [2022-04-14 23:28:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2535 transitions. [2022-04-14 23:28:52,939 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:52,939 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:52,939 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:52,939 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 2021 states have (on average 1.1895101434933202) internal successors, (2404), 2021 states have internal predecessors, (2404), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2407 transitions. [2022-04-14 23:28:53,076 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2407 transitions. Word has length 24 [2022-04-14 23:28:53,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:53,076 INFO L478 AbstractCegarLoop]: Abstraction has 2025 states and 2407 transitions. [2022-04-14 23:28:53,087 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:53,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2407 transitions. [2022-04-14 23:28:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-14 23:28:53,090 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:53,090 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:53,090 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-14 23:28:53,091 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:53,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:53,091 INFO L85 PathProgramCache]: Analyzing trace with hash -87102244, now seen corresponding path program 1 times [2022-04-14 23:28:53,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:53,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862517272] [2022-04-14 23:28:53,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:53,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:53,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:53,135 INFO L290 TraceCheckUtils]: 0: Hoare triple {35761#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {35755#true} is VALID [2022-04-14 23:28:53,135 INFO L290 TraceCheckUtils]: 1: Hoare triple {35755#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,136 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {35755#true} {35755#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,137 INFO L272 TraceCheckUtils]: 0: Hoare triple {35755#true} [152] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {35761#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:53,137 INFO L290 TraceCheckUtils]: 1: Hoare triple {35761#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [154] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {35755#true} is VALID [2022-04-14 23:28:53,137 INFO L290 TraceCheckUtils]: 2: Hoare triple {35755#true} [157] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,138 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {35755#true} {35755#true} [209] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,138 INFO L272 TraceCheckUtils]: 4: Hoare triple {35755#true} [153] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,138 INFO L290 TraceCheckUtils]: 5: Hoare triple {35755#true} [156] mainENTRY-->L113-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p6~0_2 |v_main_#t~nondet9_2|) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet10_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet9_2| 2147483647) (= v_main_~p2~0_1 |v_main_#t~nondet5_2|) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~p7~0_2 |v_main_#t~nondet10_2|) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647) (<= |v_main_#t~nondet10_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet9=|v_main_#t~nondet9_2|, main_#t~nondet8=|v_main_#t~nondet8_2|, main_#t~nondet10=|v_main_#t~nondet10_2|} OutVars{main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~p2~0=v_main_~p2~0_1, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1, main_~lk7~0=v_main_~lk7~0_1, main_~p6~0=v_main_~p6~0_2, main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~lk6~0=v_main_~lk6~0_1, main_~p7~0=v_main_~p7~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_#t~nondet9, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~lk7~0, main_~p6~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0, main_~lk6~0, main_#t~nondet10, main_~p7~0] {35755#true} is VALID [2022-04-14 23:28:53,138 INFO L290 TraceCheckUtils]: 6: Hoare triple {35755#true} [160] L113-1-->L34: Formula: (and (<= 0 (+ |v_main_#t~nondet11_2| 2147483648)) (= |v_main_#t~nondet11_2| v_main_~cond~0_2) (<= |v_main_#t~nondet11_2| 2147483647)) InVars {main_#t~nondet11=|v_main_#t~nondet11_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet11, main_~cond~0] {35755#true} is VALID [2022-04-14 23:28:53,138 INFO L290 TraceCheckUtils]: 7: Hoare triple {35755#true} [163] L34-->L53: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_2 0) (= v_main_~lk7~0_5 0) (= v_main_~lk6~0_2 0) (= v_main_~lk2~0_2 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_2, main_~lk3~0=v_main_~lk3~0_2, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~lk6~0=v_main_~lk6~0_2, main_~lk7~0=v_main_~lk7~0_5, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0, main_~lk6~0, main_~lk7~0] {35755#true} is VALID [2022-04-14 23:28:53,138 INFO L290 TraceCheckUtils]: 8: Hoare triple {35755#true} [166] L53-->L53-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,138 INFO L290 TraceCheckUtils]: 9: Hoare triple {35755#true} [168] L53-2-->L57-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,138 INFO L290 TraceCheckUtils]: 10: Hoare triple {35755#true} [170] L57-1-->L61-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,138 INFO L290 TraceCheckUtils]: 11: Hoare triple {35755#true} [172] L61-1-->L65-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,138 INFO L290 TraceCheckUtils]: 12: Hoare triple {35755#true} [174] L65-1-->L69-1: Formula: (= v_main_~p5~0_3 0) InVars {main_~p5~0=v_main_~p5~0_3} OutVars{main_~p5~0=v_main_~p5~0_3} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,139 INFO L290 TraceCheckUtils]: 13: Hoare triple {35755#true} [176] L69-1-->L73-1: Formula: (= v_main_~p6~0_4 0) InVars {main_~p6~0=v_main_~p6~0_4} OutVars{main_~p6~0=v_main_~p6~0_4} AuxVars[] AssignedVars[] {35755#true} is VALID [2022-04-14 23:28:53,139 INFO L290 TraceCheckUtils]: 14: Hoare triple {35755#true} [178] L73-1-->L77-1: Formula: (= v_main_~p7~0_5 0) InVars {main_~p7~0=v_main_~p7~0_5} OutVars{main_~p7~0=v_main_~p7~0_5} AuxVars[] AssignedVars[] {35760#(= main_~p7~0 0)} is VALID [2022-04-14 23:28:53,139 INFO L290 TraceCheckUtils]: 15: Hoare triple {35760#(= main_~p7~0 0)} [180] L77-1-->L83-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {35760#(= main_~p7~0 0)} is VALID [2022-04-14 23:28:53,140 INFO L290 TraceCheckUtils]: 16: Hoare triple {35760#(= main_~p7~0 0)} [184] L83-1-->L88-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {35760#(= main_~p7~0 0)} is VALID [2022-04-14 23:28:53,140 INFO L290 TraceCheckUtils]: 17: Hoare triple {35760#(= main_~p7~0 0)} [190] L88-1-->L93-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {35760#(= main_~p7~0 0)} is VALID [2022-04-14 23:28:53,140 INFO L290 TraceCheckUtils]: 18: Hoare triple {35760#(= main_~p7~0 0)} [194] L93-1-->L98-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {35760#(= main_~p7~0 0)} is VALID [2022-04-14 23:28:53,140 INFO L290 TraceCheckUtils]: 19: Hoare triple {35760#(= main_~p7~0 0)} [198] L98-1-->L103-1: Formula: (= v_main_~p5~0_5 0) InVars {main_~p5~0=v_main_~p5~0_5} OutVars{main_~p5~0=v_main_~p5~0_5} AuxVars[] AssignedVars[] {35760#(= main_~p7~0 0)} is VALID [2022-04-14 23:28:53,141 INFO L290 TraceCheckUtils]: 20: Hoare triple {35760#(= main_~p7~0 0)} [202] L103-1-->L108-1: Formula: (= v_main_~p6~0_1 0) InVars {main_~p6~0=v_main_~p6~0_1} OutVars{main_~p6~0=v_main_~p6~0_1} AuxVars[] AssignedVars[] {35760#(= main_~p7~0 0)} is VALID [2022-04-14 23:28:53,141 INFO L290 TraceCheckUtils]: 21: Hoare triple {35760#(= main_~p7~0 0)} [205] L108-1-->L114: Formula: (not (= v_main_~p7~0_1 0)) InVars {main_~p7~0=v_main_~p7~0_1} OutVars{main_~p7~0=v_main_~p7~0_1} AuxVars[] AssignedVars[] {35756#false} is VALID [2022-04-14 23:28:53,141 INFO L290 TraceCheckUtils]: 22: Hoare triple {35756#false} [207] L114-->L114-1: Formula: (not (= v_main_~lk7~0_2 1)) InVars {main_~lk7~0=v_main_~lk7~0_2} OutVars{main_~lk7~0=v_main_~lk7~0_2} AuxVars[] AssignedVars[] {35756#false} is VALID [2022-04-14 23:28:53,141 INFO L290 TraceCheckUtils]: 23: Hoare triple {35756#false} [185] L114-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {35756#false} is VALID [2022-04-14 23:28:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:53,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:53,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862517272] [2022-04-14 23:28:53,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862517272] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:53,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:53,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:53,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726626308] [2022-04-14 23:28:53,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:53,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-04-14 23:28:53,143 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:53,144 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:53,158 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:53,158 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:53,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:53,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:53,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:53,159 INFO L87 Difference]: Start difference. First operand 2025 states and 2407 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:53,498 INFO L93 Difference]: Finished difference Result 2535 states and 2822 transitions. [2022-04-14 23:28:53,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:53,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-04-14 23:28:53,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2022-04-14 23:28:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:53,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2022-04-14 23:28:53,501 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 79 transitions. [2022-04-14 23:28:53,566 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 79 edges. 79 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:53,567 INFO L225 Difference]: With dead ends: 2535 [2022-04-14 23:28:53,567 INFO L226 Difference]: Without dead ends: 0 [2022-04-14 23:28:53,567 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-14 23:28:53,567 INFO L913 BasicCegarLoop]: 75 mSDtfsCounter, 64 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:53,568 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 82 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:53,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-14 23:28:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-14 23:28:53,568 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:53,568 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second 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) [2022-04-14 23:28:53,568 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second 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) [2022-04-14 23:28:53,568 INFO L87 Difference]: Start difference. First operand 0 states. Second 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) [2022-04-14 23:28:53,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:53,569 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-14 23:28:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 23:28:53,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:53,569 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:53,569 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-04-14 23:28:53,569 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-04-14 23:28:53,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:53,569 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-14 23:28:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 23:28:53,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:53,569 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:53,569 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:53,569 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:53,571 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) [2022-04-14 23:28:53,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-14 23:28:53,571 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-04-14 23:28:53,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:53,571 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-14 23:28:53,571 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 23:28:53,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 23:28:53,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:53,574 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-14 23:28:53,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-14 23:28:53,578 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:53,579 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-14 23:28:53,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 11:28:53 BasicIcfg [2022-04-14 23:28:53,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-14 23:28:53,582 INFO L158 Benchmark]: Toolchain (without parser) took 8993.63ms. Allocated memory was 179.3MB in the beginning and 289.4MB in the end (delta: 110.1MB). Free memory was 122.3MB in the beginning and 220.5MB in the end (delta: -98.2MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. [2022-04-14 23:28:53,582 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory was 139.0MB in the beginning and 138.9MB in the end (delta: 129.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-14 23:28:53,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.88ms. Allocated memory was 179.3MB in the beginning and 241.2MB in the end (delta: 61.9MB). Free memory was 122.1MB in the beginning and 211.8MB in the end (delta: -89.7MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2022-04-14 23:28:53,583 INFO L158 Benchmark]: Boogie Preprocessor took 29.46ms. Allocated memory is still 241.2MB. Free memory was 211.8MB in the beginning and 210.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-14 23:28:53,583 INFO L158 Benchmark]: RCFGBuilder took 272.07ms. Allocated memory is still 241.2MB. Free memory was 210.2MB in the beginning and 197.1MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-04-14 23:28:53,583 INFO L158 Benchmark]: IcfgTransformer took 36.06ms. Allocated memory is still 241.2MB. Free memory was 197.1MB in the beginning and 195.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-14 23:28:53,583 INFO L158 Benchmark]: TraceAbstraction took 8371.32ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 194.5MB in the beginning and 220.5MB in the end (delta: -26.0MB). Peak memory consumption was 23.8MB. Max. memory is 8.0GB. [2022-04-14 23:28:53,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory was 139.0MB in the beginning and 138.9MB in the end (delta: 129.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 277.88ms. Allocated memory was 179.3MB in the beginning and 241.2MB in the end (delta: 61.9MB). Free memory was 122.1MB in the beginning and 211.8MB in the end (delta: -89.7MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.46ms. Allocated memory is still 241.2MB. Free memory was 211.8MB in the beginning and 210.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 272.07ms. Allocated memory is still 241.2MB. Free memory was 210.2MB in the beginning and 197.1MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * IcfgTransformer took 36.06ms. Allocated memory is still 241.2MB. Free memory was 197.1MB in the beginning and 195.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 8371.32ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 194.5MB in the beginning and 220.5MB in the end (delta: -26.0MB). Peak memory consumption was 23.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 121]: 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, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.3s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1713 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1713 mSDsluCounter, 1337 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 135 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 836 IncrementalHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 1202 mSDtfsCounter, 836 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2025occurred in iteration=18, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 19 MinimizatonAttempts, 528 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 399 NumberOfCodeBlocks, 399 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 380 ConstructedInterpolants, 0 QuantifiedInterpolants, 809 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-14 23:28:53,621 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...