/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/array-fpi/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 11:44:28,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 11:44:28,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 11:44:28,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 11:44:28,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 11:44:28,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 11:44:28,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 11:44:28,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 11:44:28,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 11:44:28,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 11:44:28,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 11:44:28,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 11:44:28,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 11:44:28,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 11:44:28,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 11:44:28,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 11:44:28,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 11:44:28,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 11:44:28,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 11:44:28,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 11:44:28,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 11:44:28,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 11:44:28,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 11:44:28,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 11:44:28,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 11:44:28,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 11:44:28,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 11:44:28,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 11:44:28,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 11:44:28,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 11:44:28,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 11:44:28,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 11:44:28,200 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 11:44:28,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 11:44:28,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 11:44:28,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 11:44:28,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 11:44:28,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 11:44:28,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 11:44:28,201 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 11:44:28,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 11:44:28,201 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 11:44:28,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 11:44:28,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 11:44:28,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 11:44:28,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 11:44:28,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 11:44:28,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 11:44:28,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 11:44:28,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 11:44:28,203 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 11:44:28,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 11:44:28,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 11:44:28,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 11:44:28,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 11:44:28,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 11:44:28,462 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 11:44:28,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2022-01-31 11:44:28,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7afc794/fad7f9ee276449579bbed35e2f32b4a9/FLAG10b091119 [2022-01-31 11:44:28,959 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 11:44:28,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3iff.c [2022-01-31 11:44:28,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7afc794/fad7f9ee276449579bbed35e2f32b4a9/FLAG10b091119 [2022-01-31 11:44:28,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7afc794/fad7f9ee276449579bbed35e2f32b4a9 [2022-01-31 11:44:28,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 11:44:28,993 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 11:44:28,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 11:44:28,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 11:44:29,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 11:44:29,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:44:28" (1/1) ... [2022-01-31 11:44:29,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba46612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29, skipping insertion in model container [2022-01-31 11:44:29,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:44:28" (1/1) ... [2022-01-31 11:44:29,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 11:44:29,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 11:44:29,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3iff.c[588,601] [2022-01-31 11:44:29,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 11:44:29,162 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 11:44:29,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3iff.c[588,601] [2022-01-31 11:44:29,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 11:44:29,190 INFO L208 MainTranslator]: Completed translation [2022-01-31 11:44:29,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29 WrapperNode [2022-01-31 11:44:29,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 11:44:29,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 11:44:29,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 11:44:29,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 11:44:29,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29" (1/1) ... [2022-01-31 11:44:29,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29" (1/1) ... [2022-01-31 11:44:29,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29" (1/1) ... [2022-01-31 11:44:29,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29" (1/1) ... [2022-01-31 11:44:29,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29" (1/1) ... [2022-01-31 11:44:29,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29" (1/1) ... [2022-01-31 11:44:29,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29" (1/1) ... [2022-01-31 11:44:29,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 11:44:29,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 11:44:29,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 11:44:29,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 11:44:29,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29" (1/1) ... [2022-01-31 11:44:29,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 11:44:29,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:44:29,243 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) [2022-01-31 11:44:29,244 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 [2022-01-31 11:44:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 11:44:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 11:44:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 11:44:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 11:44:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 11:44:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 11:44:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 11:44:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 11:44:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 11:44:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 11:44:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 11:44:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 11:44:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 11:44:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 11:44:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 11:44:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 11:44:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 11:44:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 11:44:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 11:44:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 11:44:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 11:44:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 11:44:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 11:44:29,329 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 11:44:29,331 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 11:44:29,522 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 11:44:29,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 11:44:29,533 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 11:44:29,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:44:29 BoogieIcfgContainer [2022-01-31 11:44:29,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 11:44:29,535 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 11:44:29,536 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 11:44:29,548 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 11:44:29,550 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:44:29" (1/1) ... [2022-01-31 11:44:29,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 11:44:29 BasicIcfg [2022-01-31 11:44:29,577 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 11:44:29,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 11:44:29,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 11:44:29,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 11:44:29,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:44:28" (1/4) ... [2022-01-31 11:44:29,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7556362a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:44:29, skipping insertion in model container [2022-01-31 11:44:29,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:44:29" (2/4) ... [2022-01-31 11:44:29,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7556362a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:44:29, skipping insertion in model container [2022-01-31 11:44:29,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:44:29" (3/4) ... [2022-01-31 11:44:29,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7556362a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:44:29, skipping insertion in model container [2022-01-31 11:44:29,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 11:44:29" (4/4) ... [2022-01-31 11:44:29,583 INFO L111 eAbstractionObserver]: Analyzing ICFG s3iff.cJordan [2022-01-31 11:44:29,587 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 11:44:29,588 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 11:44:29,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 11:44:29,656 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 11:44:29,656 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 11:44:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 11:44:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 11:44:29,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:44:29,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:44:29,691 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:44:29,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:44:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash -219332792, now seen corresponding path program 1 times [2022-01-31 11:44:29,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:44:29,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243059131] [2022-01-31 11:44:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:44:29,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:44:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:29,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:44:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:44:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:29,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:44:29,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243059131] [2022-01-31 11:44:29,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243059131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:44:29,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:44:29,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 11:44:29,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622522434] [2022-01-31 11:44:29,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:44:29,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 11:44:29,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:44:29,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 11:44:29,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 11:44:29,967 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:44:30,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:44:30,041 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-01-31 11:44:30,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 11:44:30,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-01-31 11:44:30,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:44:30,053 INFO L225 Difference]: With dead ends: 32 [2022-01-31 11:44:30,053 INFO L226 Difference]: Without dead ends: 25 [2022-01-31 11:44:30,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 11:44:30,059 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:44:30,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:44:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-31 11:44:30,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-31 11:44:30,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:44:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-01-31 11:44:30,088 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2022-01-31 11:44:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:44:30,089 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-01-31 11:44:30,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:44:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-01-31 11:44:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 11:44:30,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:44:30,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:44:30,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 11:44:30,092 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:44:30,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:44:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1681189413, now seen corresponding path program 1 times [2022-01-31 11:44:30,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:44:30,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034416948] [2022-01-31 11:44:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:44:30,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:44:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:30,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:44:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:30,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:44:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:30,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:44:30,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034416948] [2022-01-31 11:44:30,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034416948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:44:30,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:44:30,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 11:44:30,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631033296] [2022-01-31 11:44:30,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:44:30,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 11:44:30,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:44:30,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 11:44:30,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 11:44:30,235 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:44:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:44:30,322 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-01-31 11:44:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 11:44:30,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-01-31 11:44:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:44:30,324 INFO L225 Difference]: With dead ends: 30 [2022-01-31 11:44:30,324 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 11:44:30,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 11:44:30,330 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 28 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:44:30,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 28 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:44:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 11:44:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-01-31 11:44:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:44:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-01-31 11:44:30,335 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2022-01-31 11:44:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:44:30,339 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-01-31 11:44:30,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:44:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-01-31 11:44:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 11:44:30,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:44:30,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:44:30,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 11:44:30,340 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:44:30,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:44:30,341 INFO L85 PathProgramCache]: Analyzing trace with hash 982061835, now seen corresponding path program 1 times [2022-01-31 11:44:30,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:44:30,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500758826] [2022-01-31 11:44:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:44:30,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:44:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:44:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:30,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:44:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:30,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:44:30,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500758826] [2022-01-31 11:44:30,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500758826] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:44:30,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200856151] [2022-01-31 11:44:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:44:30,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:44:30,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:44:30,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:44:30,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 11:44:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:30,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-31 11:44:30,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:44:30,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-31 11:44:30,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-31 11:44:30,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-31 11:44:31,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-01-31 11:44:31,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2022-01-31 11:44:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:31,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:44:31,616 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 11:44:31,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-01-31 11:44:31,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:44:31,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-01-31 11:44:31,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-01-31 11:44:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:31,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200856151] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:44:31,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 11:44:31,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 24 [2022-01-31 11:44:31,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614069486] [2022-01-31 11:44:31,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 11:44:31,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 11:44:31,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:44:31,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 11:44:31,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=466, Unknown=2, NotChecked=0, Total=552 [2022-01-31 11:44:31,661 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 24 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 11:44:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:44:31,839 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-01-31 11:44:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 11:44:31,840 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-01-31 11:44:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:44:31,842 INFO L225 Difference]: With dead ends: 40 [2022-01-31 11:44:31,842 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 11:44:31,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=680, Unknown=2, NotChecked=0, Total=812 [2022-01-31 11:44:31,843 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:44:31,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 78 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 133 Invalid, 0 Unknown, 89 Unchecked, 0.1s Time] [2022-01-31 11:44:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 11:44:31,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-01-31 11:44:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:44:31,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-31 11:44:31,848 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2022-01-31 11:44:31,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:44:31,849 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-31 11:44:31,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 11:44:31,849 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-31 11:44:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 11:44:31,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:44:31,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:44:31,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 11:44:32,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:44:32,074 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:44:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:44:32,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1570095126, now seen corresponding path program 1 times [2022-01-31 11:44:32,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:44:32,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893945467] [2022-01-31 11:44:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:44:32,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:44:32,089 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:44:32,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662763211] [2022-01-31 11:44:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:44:32,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:44:32,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:44:32,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:44:32,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 11:44:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:32,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-31 11:44:32,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:44:32,178 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-31 11:44:32,234 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-31 11:44:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:32,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:44:32,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-31 11:44:32,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-01-31 11:44:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:32,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:44:32,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893945467] [2022-01-31 11:44:32,317 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:44:32,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662763211] [2022-01-31 11:44:32,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662763211] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:44:32,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 11:44:32,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-01-31 11:44:32,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030143486] [2022-01-31 11:44:32,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 11:44:32,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 11:44:32,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:44:32,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 11:44:32,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-31 11:44:32,319 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:44:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:44:32,378 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-01-31 11:44:32,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 11:44:32,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-01-31 11:44:32,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:44:32,380 INFO L225 Difference]: With dead ends: 36 [2022-01-31 11:44:32,380 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 11:44:32,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-31 11:44:32,381 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 11:44:32,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 139 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 11:44:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 11:44:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-01-31 11:44:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:44:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-01-31 11:44:32,385 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 26 [2022-01-31 11:44:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:44:32,385 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-01-31 11:44:32,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:44:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-01-31 11:44:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 11:44:32,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:44:32,386 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:44:32,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 11:44:32,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-31 11:44:32,609 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:44:32,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:44:32,610 INFO L85 PathProgramCache]: Analyzing trace with hash -440371033, now seen corresponding path program 2 times [2022-01-31 11:44:32,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:44:32,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907658858] [2022-01-31 11:44:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:44:32,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:44:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:32,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:44:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:32,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:44:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:32,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:44:32,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907658858] [2022-01-31 11:44:32,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907658858] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:44:32,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808214429] [2022-01-31 11:44:32,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 11:44:32,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:44:32,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:44:32,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:44:32,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 11:44:32,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 11:44:32,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:44:32,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 11:44:32,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:44:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:32,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:44:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:32,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808214429] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:44:32,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 11:44:32,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-01-31 11:44:32,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913793482] [2022-01-31 11:44:32,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 11:44:32,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 11:44:32,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:44:32,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 11:44:32,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-31 11:44:32,968 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:44:33,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:44:33,121 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-01-31 11:44:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 11:44:33,123 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-01-31 11:44:33,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:44:33,123 INFO L225 Difference]: With dead ends: 39 [2022-01-31 11:44:33,124 INFO L226 Difference]: Without dead ends: 39 [2022-01-31 11:44:33,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-01-31 11:44:33,125 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:44:33,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 65 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:44:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-31 11:44:33,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2022-01-31 11:44:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:44:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-01-31 11:44:33,130 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2022-01-31 11:44:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:44:33,130 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-01-31 11:44:33,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:44:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-01-31 11:44:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 11:44:33,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:44:33,131 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:44:33,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 11:44:33,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:44:33,332 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:44:33,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:44:33,333 INFO L85 PathProgramCache]: Analyzing trace with hash -125805623, now seen corresponding path program 3 times [2022-01-31 11:44:33,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:44:33,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120276815] [2022-01-31 11:44:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:44:33,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:44:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:44:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:33,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:44:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:44:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:33,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:44:33,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120276815] [2022-01-31 11:44:33,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120276815] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:44:33,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114727489] [2022-01-31 11:44:33,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 11:44:33,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:44:33,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:44:33,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:44:33,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 11:44:33,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 11:44:33,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:44:33,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 11:44:33,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:44:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:33,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:44:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:44:33,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114727489] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:44:33,649 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 11:44:33,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-01-31 11:44:33,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250177917] [2022-01-31 11:44:33,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 11:44:33,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 11:44:33,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:44:33,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 11:44:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-31 11:44:33,651 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:44:33,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:44:33,764 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-01-31 11:44:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 11:44:33,764 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-01-31 11:44:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:44:33,765 INFO L225 Difference]: With dead ends: 40 [2022-01-31 11:44:33,765 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 11:44:33,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-01-31 11:44:33,766 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:44:33,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 59 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:44:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 11:44:33,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-01-31 11:44:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:44:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-01-31 11:44:33,770 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 29 [2022-01-31 11:44:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:44:33,770 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-01-31 11:44:33,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:44:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-01-31 11:44:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 11:44:33,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:44:33,771 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:44:33,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 11:44:33,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:44:33,979 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:44:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:44:33,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1676033875, now seen corresponding path program 4 times [2022-01-31 11:44:33,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:44:33,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029104867] [2022-01-31 11:44:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:44:33,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:44:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 11:44:34,014 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 11:44:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 11:44:34,063 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 11:44:34,063 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 11:44:34,064 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 11:44:34,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 11:44:34,068 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-01-31 11:44:34,070 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 11:44:34,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:44:34 BasicIcfg [2022-01-31 11:44:34,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 11:44:34,092 INFO L158 Benchmark]: Toolchain (without parser) took 5099.01ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 124.8MB in the beginning and 123.6MB in the end (delta: 1.2MB). Peak memory consumption was 34.9MB. Max. memory is 8.0GB. [2022-01-31 11:44:34,092 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 172.0MB. Free memory was 141.3MB in the beginning and 141.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 11:44:34,093 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.81ms. Allocated memory is still 172.0MB. Free memory was 124.6MB in the beginning and 148.6MB in the end (delta: -24.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-01-31 11:44:34,093 INFO L158 Benchmark]: Boogie Preprocessor took 26.20ms. Allocated memory is still 172.0MB. Free memory was 148.6MB in the beginning and 147.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 11:44:34,093 INFO L158 Benchmark]: RCFGBuilder took 316.46ms. Allocated memory is still 172.0MB. Free memory was 147.0MB in the beginning and 135.8MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 11:44:34,093 INFO L158 Benchmark]: IcfgTransformer took 41.76ms. Allocated memory is still 172.0MB. Free memory was 135.8MB in the beginning and 134.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 11:44:34,093 INFO L158 Benchmark]: TraceAbstraction took 4513.44ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 133.9MB in the beginning and 123.6MB in the end (delta: 10.3MB). Peak memory consumption was 46.0MB. Max. memory is 8.0GB. [2022-01-31 11:44:34,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 172.0MB. Free memory was 141.3MB in the beginning and 141.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.81ms. Allocated memory is still 172.0MB. Free memory was 124.6MB in the beginning and 148.6MB in the end (delta: -24.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.20ms. Allocated memory is still 172.0MB. Free memory was 148.6MB in the beginning and 147.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 316.46ms. Allocated memory is still 172.0MB. Free memory was 147.0MB in the beginning and 135.8MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 41.76ms. Allocated memory is still 172.0MB. Free memory was 135.8MB in the beginning and 134.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 4513.44ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 133.9MB in the beginning and 123.6MB in the end (delta: 10.3MB). Peak memory consumption was 46.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, N=2, sum={5:0}] [L32] COND TRUE i