/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/loops/eureka_01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 16:55:47,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 16:55:47,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 16:55:47,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 16:55:47,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 16:55:47,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 16:55:47,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 16:55:47,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 16:55:47,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 16:55:47,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 16:55:47,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 16:55:47,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 16:55:47,679 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 16:55:47,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 16:55:47,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 16:55:47,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 16:55:47,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 16:55:47,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 16:55:47,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 16:55:47,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 16:55:47,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 16:55:47,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 16:55:47,701 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 16:55:47,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 16:55:47,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 16:55:47,703 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 16:55:47,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 16:55:47,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 16:55:47,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 16:55:47,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 16:55:47,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 16:55:47,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 16:55:47,703 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 16:55:47,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 16:55:47,704 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 16:55:47,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 16:55:47,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 16:55:47,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 16:55:47,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 16:55:47,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 16:55:47,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:55:47,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 16:55:47,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 16:55:47,705 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 16:55:47,705 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 16:55:47,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 16:55:47,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 16:55:47,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 16:55:47,915 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 16:55:47,920 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 16:55:47,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01-2.c [2022-03-18 16:55:47,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c5d2ad0/7014fb801ffd4775b8314e5a38337ec8/FLAGeb05a7a03 [2022-03-18 16:55:48,294 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 16:55:48,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c [2022-03-18 16:55:48,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c5d2ad0/7014fb801ffd4775b8314e5a38337ec8/FLAGeb05a7a03 [2022-03-18 16:55:48,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c5d2ad0/7014fb801ffd4775b8314e5a38337ec8 [2022-03-18 16:55:48,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 16:55:48,317 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 16:55:48,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 16:55:48,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 16:55:48,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 16:55:48,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8578a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48, skipping insertion in model container [2022-03-18 16:55:48,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 16:55:48,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 16:55:48,487 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c[323,336] [2022-03-18 16:55:48,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:55:48,529 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 16:55:48,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c[323,336] [2022-03-18 16:55:48,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:55:48,572 INFO L208 MainTranslator]: Completed translation [2022-03-18 16:55:48,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48 WrapperNode [2022-03-18 16:55:48,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 16:55:48,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 16:55:48,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 16:55:48,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 16:55:48,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 16:55:48,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 16:55:48,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 16:55:48,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 16:55:48,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:55:48,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:55:48,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 16:55:48,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 16:55:48,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 16:55:48,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 16:55:48,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 16:55:48,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 16:55:48,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 16:55:48,666 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 16:55:48,666 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 16:55:48,666 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 16:55:48,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 16:55:48,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 16:55:48,667 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 16:55:48,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-18 16:55:48,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 16:55:48,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 16:55:48,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 16:55:48,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 16:55:48,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 16:55:48,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 16:55:48,732 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 16:55:48,733 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 16:55:48,920 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 16:55:48,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 16:55:48,924 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-03-18 16:55:48,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:55:48 BoogieIcfgContainer [2022-03-18 16:55:48,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 16:55:48,926 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 16:55:48,926 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 16:55:48,927 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 16:55:48,929 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:55:48" (1/1) ... [2022-03-18 16:55:48,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 04:55:48 BasicIcfg [2022-03-18 16:55:48,944 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 16:55:48,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 16:55:48,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 16:55:48,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 16:55:48,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 04:55:48" (1/4) ... [2022-03-18 16:55:48,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9ba8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:55:48, skipping insertion in model container [2022-03-18 16:55:48,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:55:48" (2/4) ... [2022-03-18 16:55:48,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9ba8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:55:48, skipping insertion in model container [2022-03-18 16:55:48,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:55:48" (3/4) ... [2022-03-18 16:55:48,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9ba8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 04:55:48, skipping insertion in model container [2022-03-18 16:55:48,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 04:55:48" (4/4) ... [2022-03-18 16:55:48,952 INFO L111 eAbstractionObserver]: Analyzing ICFG eureka_01-2.cJordan [2022-03-18 16:55:48,955 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 16:55:48,956 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 16:55:48,994 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 16:55:49,000 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 16:55:49,000 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 16:55:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 16:55:49,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 16:55:49,014 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:49,015 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:55:49,015 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:49,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1334968457, now seen corresponding path program 1 times [2022-03-18 16:55:49,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:49,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557520501] [2022-03-18 16:55:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:49,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:55:49,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:49,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557520501] [2022-03-18 16:55:49,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557520501] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:55:49,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:55:49,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 16:55:49,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730661285] [2022-03-18 16:55:49,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:55:49,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 16:55:49,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:49,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 16:55:49,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 16:55:49,256 INFO L87 Difference]: Start difference. First operand has 35 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:49,289 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-03-18 16:55:49,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 16:55:49,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 16:55:49,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:49,296 INFO L225 Difference]: With dead ends: 35 [2022-03-18 16:55:49,297 INFO L226 Difference]: Without dead ends: 30 [2022-03-18 16:55:49,298 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 16:55:49,300 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:49,301 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 43 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 16:55:49,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-03-18 16:55:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-03-18 16:55:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-03-18 16:55:49,325 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 17 [2022-03-18 16:55:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:49,326 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-03-18 16:55:49,326 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-03-18 16:55:49,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 16:55:49,327 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:49,327 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:55:49,328 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 16:55:49,328 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:49,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash 243096698, now seen corresponding path program 1 times [2022-03-18 16:55:49,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:49,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260647103] [2022-03-18 16:55:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:49,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:49,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:55:49,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:49,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260647103] [2022-03-18 16:55:49,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260647103] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:55:49,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:55:49,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 16:55:49,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993636269] [2022-03-18 16:55:49,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:55:49,437 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 16:55:49,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:49,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 16:55:49,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 16:55:49,438 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:49,517 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-03-18 16:55:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 16:55:49,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 16:55:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:49,520 INFO L225 Difference]: With dead ends: 33 [2022-03-18 16:55:49,520 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 16:55:49,521 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 16:55:49,522 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 35 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:49,522 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 38 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 16:55:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 16:55:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-03-18 16:55:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-03-18 16:55:49,529 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 17 [2022-03-18 16:55:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:49,529 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-03-18 16:55:49,529 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-03-18 16:55:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 16:55:49,531 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:49,533 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:55:49,533 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 16:55:49,535 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:49,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:49,536 INFO L85 PathProgramCache]: Analyzing trace with hash 717214907, now seen corresponding path program 1 times [2022-03-18 16:55:49,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:49,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751291805] [2022-03-18 16:55:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:49,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:55:49,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:49,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751291805] [2022-03-18 16:55:49,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751291805] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:55:49,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:55:49,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 16:55:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612888585] [2022-03-18 16:55:49,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:55:49,617 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 16:55:49,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:49,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 16:55:49,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 16:55:49,618 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:49,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:49,704 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2022-03-18 16:55:49,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 16:55:49,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-03-18 16:55:49,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:49,706 INFO L225 Difference]: With dead ends: 46 [2022-03-18 16:55:49,706 INFO L226 Difference]: Without dead ends: 46 [2022-03-18 16:55:49,706 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 16:55:49,707 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 90 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:49,707 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 29 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 16:55:49,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-18 16:55:49,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2022-03-18 16:55:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:49,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-03-18 16:55:49,712 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 20 [2022-03-18 16:55:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:49,712 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-03-18 16:55:49,713 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:49,713 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-03-18 16:55:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-18 16:55:49,713 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:49,713 INFO L500 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] [2022-03-18 16:55:49,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 16:55:49,713 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:49,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1347595944, now seen corresponding path program 1 times [2022-03-18 16:55:49,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:49,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205524272] [2022-03-18 16:55:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:49,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:55:49,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:49,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205524272] [2022-03-18 16:55:49,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205524272] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:55:49,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:55:49,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 16:55:49,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112372244] [2022-03-18 16:55:49,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:55:49,773 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 16:55:49,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 16:55:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 16:55:49,774 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:49,836 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-03-18 16:55:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 16:55:49,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-03-18 16:55:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:49,837 INFO L225 Difference]: With dead ends: 35 [2022-03-18 16:55:49,837 INFO L226 Difference]: Without dead ends: 35 [2022-03-18 16:55:49,837 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 16:55:49,838 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:49,839 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 40 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 16:55:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-18 16:55:49,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-03-18 16:55:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-03-18 16:55:49,841 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 23 [2022-03-18 16:55:49,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:49,841 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-03-18 16:55:49,842 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:49,842 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-03-18 16:55:49,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-18 16:55:49,842 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:49,842 INFO L500 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] [2022-03-18 16:55:49,842 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 16:55:49,843 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:49,843 INFO L85 PathProgramCache]: Analyzing trace with hash -468765620, now seen corresponding path program 1 times [2022-03-18 16:55:49,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:49,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223527736] [2022-03-18 16:55:49,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:49,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:49,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 16:55:49,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:49,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223527736] [2022-03-18 16:55:49,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223527736] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:55:49,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:55:49,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 16:55:49,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753132025] [2022-03-18 16:55:49,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:55:49,897 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 16:55:49,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:49,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 16:55:49,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 16:55:49,898 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:49,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:49,962 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-03-18 16:55:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 16:55:49,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-03-18 16:55:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:49,964 INFO L225 Difference]: With dead ends: 47 [2022-03-18 16:55:49,964 INFO L226 Difference]: Without dead ends: 47 [2022-03-18 16:55:49,965 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 16:55:49,972 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 72 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:49,973 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 29 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 16:55:49,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-18 16:55:49,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2022-03-18 16:55:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-03-18 16:55:49,976 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 26 [2022-03-18 16:55:49,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:49,976 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-03-18 16:55:49,976 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-03-18 16:55:49,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-18 16:55:49,977 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:49,977 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:55:49,977 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 16:55:49,977 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:49,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1132636388, now seen corresponding path program 1 times [2022-03-18 16:55:49,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:49,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086693208] [2022-03-18 16:55:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:49,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 16:55:50,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:50,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086693208] [2022-03-18 16:55:50,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086693208] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:55:50,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284835695] [2022-03-18 16:55:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:50,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:55:50,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:55:50,088 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) [2022-03-18 16:55:50,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 16:55:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:50,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 16:55:50,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:55:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 16:55:50,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:55:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 16:55:50,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284835695] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:55:50,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:55:50,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-03-18 16:55:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18670495] [2022-03-18 16:55:50,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:55:50,398 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 16:55:50,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:50,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 16:55:50,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:55:50,398 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:50,554 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-03-18 16:55:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 16:55:50,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-03-18 16:55:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:50,558 INFO L225 Difference]: With dead ends: 43 [2022-03-18 16:55:50,558 INFO L226 Difference]: Without dead ends: 43 [2022-03-18 16:55:50,559 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:55:50,564 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 55 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:50,565 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 46 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 16:55:50,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-03-18 16:55:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-03-18 16:55:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2022-03-18 16:55:50,573 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2022-03-18 16:55:50,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:50,574 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2022-03-18 16:55:50,574 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2022-03-18 16:55:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-18 16:55:50,574 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:50,575 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2022-03-18 16:55:50,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 16:55:50,775 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-03-18 16:55:50,776 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1435177147, now seen corresponding path program 2 times [2022-03-18 16:55:50,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:50,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904567877] [2022-03-18 16:55:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-18 16:55:50,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:50,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904567877] [2022-03-18 16:55:50,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904567877] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:55:50,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163648623] [2022-03-18 16:55:50,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 16:55:50,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:55:50,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:55:50,865 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) [2022-03-18 16:55:50,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 16:55:50,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 16:55:50,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 16:55:50,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 16:55:50,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:55:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-18 16:55:51,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 16:55:51,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163648623] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:55:51,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 16:55:51,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-03-18 16:55:51,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422203847] [2022-03-18 16:55:51,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:55:51,056 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 16:55:51,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 16:55:51,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 16:55:51,057 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:51,103 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-03-18 16:55:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 16:55:51,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-03-18 16:55:51,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:51,104 INFO L225 Difference]: With dead ends: 54 [2022-03-18 16:55:51,104 INFO L226 Difference]: Without dead ends: 54 [2022-03-18 16:55:51,105 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 16:55:51,105 INFO L912 BasicCegarLoop]: 32 mSDtfsCounter, 25 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:51,105 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 63 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 16:55:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-03-18 16:55:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2022-03-18 16:55:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-03-18 16:55:51,109 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 38 [2022-03-18 16:55:51,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:51,109 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-03-18 16:55:51,109 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:51,109 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-03-18 16:55:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-18 16:55:51,110 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:51,110 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:55:51,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 16:55:51,310 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-03-18 16:55:51,311 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:51,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1510212028, now seen corresponding path program 1 times [2022-03-18 16:55:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:51,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281620712] [2022-03-18 16:55:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 16:55:51,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:51,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281620712] [2022-03-18 16:55:51,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281620712] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:55:51,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838828724] [2022-03-18 16:55:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:51,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:55:51,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:55:51,399 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) [2022-03-18 16:55:51,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 16:55:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:51,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 16:55:51,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:55:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 16:55:51,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:55:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 16:55:51,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838828724] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:55:51,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:55:51,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2022-03-18 16:55:51,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287467290] [2022-03-18 16:55:51,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:55:51,719 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 16:55:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:51,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 16:55:51,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2022-03-18 16:55:51,720 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 17 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:51,891 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-03-18 16:55:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 16:55:51,891 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 17 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-03-18 16:55:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:51,892 INFO L225 Difference]: With dead ends: 48 [2022-03-18 16:55:51,892 INFO L226 Difference]: Without dead ends: 48 [2022-03-18 16:55:51,892 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2022-03-18 16:55:51,893 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 67 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:51,893 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 56 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 16:55:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-18 16:55:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-03-18 16:55:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-03-18 16:55:51,895 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 38 [2022-03-18 16:55:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:51,895 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-03-18 16:55:51,896 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 17 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-03-18 16:55:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-18 16:55:51,900 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:51,901 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:55:51,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 16:55:52,120 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:55:52,120 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:52,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:52,121 INFO L85 PathProgramCache]: Analyzing trace with hash 324120804, now seen corresponding path program 2 times [2022-03-18 16:55:52,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:52,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042449650] [2022-03-18 16:55:52,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:52,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-18 16:55:52,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:52,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042449650] [2022-03-18 16:55:52,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042449650] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:55:52,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622682441] [2022-03-18 16:55:52,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 16:55:52,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:55:52,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:55:52,196 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) [2022-03-18 16:55:52,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 16:55:52,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 16:55:52,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 16:55:52,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 16:55:52,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:55:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-03-18 16:55:52,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:55:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-03-18 16:55:52,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622682441] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:55:52,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:55:52,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-03-18 16:55:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459591477] [2022-03-18 16:55:52,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:55:52,418 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:55:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:52,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:55:52,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:55:52,419 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:52,724 INFO L93 Difference]: Finished difference Result 122 states and 153 transitions. [2022-03-18 16:55:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 16:55:52,725 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-03-18 16:55:52,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:52,726 INFO L225 Difference]: With dead ends: 122 [2022-03-18 16:55:52,726 INFO L226 Difference]: Without dead ends: 122 [2022-03-18 16:55:52,726 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=228, Invalid=422, Unknown=0, NotChecked=0, Total=650 [2022-03-18 16:55:52,727 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 253 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:52,727 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 56 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 16:55:52,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-03-18 16:55:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 58. [2022-03-18 16:55:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 52 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2022-03-18 16:55:52,731 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 41 [2022-03-18 16:55:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:52,731 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2022-03-18 16:55:52,731 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2022-03-18 16:55:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 16:55:52,731 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:52,731 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:55:52,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 16:55:52,940 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:55:52,940 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:52,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash -375257896, now seen corresponding path program 3 times [2022-03-18 16:55:52,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:52,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811982030] [2022-03-18 16:55:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:52,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:53,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:53,006 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-03-18 16:55:53,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:53,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811982030] [2022-03-18 16:55:53,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811982030] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:55:53,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494968224] [2022-03-18 16:55:53,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 16:55:53,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:55:53,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:55:53,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:55:53,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 16:55:53,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-18 16:55:53,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 16:55:53,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 16:55:53,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:55:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-03-18 16:55:53,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:55:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-03-18 16:55:53,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494968224] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:55:53,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:55:53,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-03-18 16:55:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030393270] [2022-03-18 16:55:53,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:55:53,273 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:55:53,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:55:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:55:53,274 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:53,666 INFO L93 Difference]: Finished difference Result 120 states and 147 transitions. [2022-03-18 16:55:53,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:55:53,666 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-03-18 16:55:53,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:53,667 INFO L225 Difference]: With dead ends: 120 [2022-03-18 16:55:53,667 INFO L226 Difference]: Without dead ends: 120 [2022-03-18 16:55:53,667 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2022-03-18 16:55:53,668 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 434 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:53,668 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 60 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 16:55:53,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-03-18 16:55:53,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 97. [2022-03-18 16:55:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 91 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2022-03-18 16:55:53,672 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 53 [2022-03-18 16:55:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:53,672 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2022-03-18 16:55:53,672 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2022-03-18 16:55:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-18 16:55:53,673 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:53,673 INFO L500 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:55:53,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 16:55:53,879 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-18 16:55:53,880 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:53,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:53,880 INFO L85 PathProgramCache]: Analyzing trace with hash -997527169, now seen corresponding path program 4 times [2022-03-18 16:55:53,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:53,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842688659] [2022-03-18 16:55:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:53,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 106 proven. 12 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-03-18 16:55:54,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:54,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842688659] [2022-03-18 16:55:54,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842688659] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:55:54,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449758496] [2022-03-18 16:55:54,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 16:55:54,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:55:54,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:55:54,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:55:54,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 16:55:54,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 16:55:54,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 16:55:54,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-18 16:55:54,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:55:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 26 proven. 114 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-03-18 16:55:54,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:55:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 26 proven. 114 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-03-18 16:55:54,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449758496] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:55:54,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:55:54,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 21 [2022-03-18 16:55:54,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551161177] [2022-03-18 16:55:54,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:55:54,462 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 16:55:54,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:55:54,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 16:55:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:55:54,463 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:55:54,652 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2022-03-18 16:55:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 16:55:54,653 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2022-03-18 16:55:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:55:54,653 INFO L225 Difference]: With dead ends: 117 [2022-03-18 16:55:54,653 INFO L226 Difference]: Without dead ends: 117 [2022-03-18 16:55:54,654 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2022-03-18 16:55:54,654 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 95 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:55:54,655 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 75 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 16:55:54,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-03-18 16:55:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 109. [2022-03-18 16:55:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.2427184466019416) internal successors, (128), 103 states have internal predecessors, (128), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:55:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 133 transitions. [2022-03-18 16:55:54,658 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 133 transitions. Word has length 92 [2022-03-18 16:55:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:55:54,658 INFO L478 AbstractCegarLoop]: Abstraction has 109 states and 133 transitions. [2022-03-18 16:55:54,658 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:55:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 133 transitions. [2022-03-18 16:55:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-18 16:55:54,659 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:55:54,659 INFO L500 BasicCegarLoop]: trace histogram [16, 16, 16, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:55:54,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 16:55:54,863 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:55:54,863 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:55:54,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:55:54,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1061294853, now seen corresponding path program 5 times [2022-03-18 16:55:54,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:55:54,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535518613] [2022-03-18 16:55:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:55:54,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:55:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:54,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:55:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:55:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 175 proven. 22 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-03-18 16:55:54,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:55:54,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535518613] [2022-03-18 16:55:54,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535518613] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:55:54,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104618304] [2022-03-18 16:55:54,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 16:55:54,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:55:54,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:55:54,944 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:55:54,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 16:56:41,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-03-18 16:56:41,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 16:56:41,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 16:56:41,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:56:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 294 proven. 22 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-03-18 16:56:42,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:56:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 237 proven. 79 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-03-18 16:56:42,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104618304] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:56:42,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:56:42,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2022-03-18 16:56:42,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170284647] [2022-03-18 16:56:42,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:56:42,284 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 16:56:42,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:56:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 16:56:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=231, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:56:42,284 INFO L87 Difference]: Start difference. First operand 109 states and 133 transitions. Second operand has 20 states, 20 states have (on average 4.4) internal successors, (88), 19 states have internal predecessors, (88), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:56:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:56:42,510 INFO L93 Difference]: Finished difference Result 181 states and 229 transitions. [2022-03-18 16:56:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 16:56:42,511 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.4) internal successors, (88), 19 states have internal predecessors, (88), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2022-03-18 16:56:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:56:42,511 INFO L225 Difference]: With dead ends: 181 [2022-03-18 16:56:42,512 INFO L226 Difference]: Without dead ends: 181 [2022-03-18 16:56:42,512 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=329, Invalid=601, Unknown=0, NotChecked=0, Total=930 [2022-03-18 16:56:42,512 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 142 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:56:42,513 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 55 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 16:56:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-03-18 16:56:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-03-18 16:56:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 175 states have (on average 1.28) internal successors, (224), 175 states have internal predecessors, (224), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:56:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 229 transitions. [2022-03-18 16:56:42,516 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 229 transitions. Word has length 104 [2022-03-18 16:56:42,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:56:42,516 INFO L478 AbstractCegarLoop]: Abstraction has 181 states and 229 transitions. [2022-03-18 16:56:42,516 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.4) internal successors, (88), 19 states have internal predecessors, (88), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:56:42,516 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 229 transitions. [2022-03-18 16:56:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-03-18 16:56:42,517 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:56:42,517 INFO L500 BasicCegarLoop]: trace histogram [40, 40, 40, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:56:42,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 16:56:42,729 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:56:42,729 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:56:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:56:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1106462853, now seen corresponding path program 6 times [2022-03-18 16:56:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:56:42,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413869916] [2022-03-18 16:56:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:56:42,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:56:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:56:42,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:56:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:56:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 967 proven. 145 refuted. 0 times theorem prover too weak. 1467 trivial. 0 not checked. [2022-03-18 16:56:42,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:56:42,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413869916] [2022-03-18 16:56:42,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413869916] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:56:42,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766361583] [2022-03-18 16:56:42,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 16:56:42,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:56:42,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:56:42,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:56:42,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 16:56:43,694 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-03-18 16:56:43,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 16:56:43,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 16:56:43,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:56:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2557 trivial. 0 not checked. [2022-03-18 16:56:44,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:56:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2557 trivial. 0 not checked. [2022-03-18 16:56:44,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766361583] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:56:44,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:56:44,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 27 [2022-03-18 16:56:44,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709851410] [2022-03-18 16:56:44,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:56:44,308 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-18 16:56:44,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:56:44,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-18 16:56:44,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2022-03-18 16:56:44,309 INFO L87 Difference]: Start difference. First operand 181 states and 229 transitions. Second operand has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 26 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:56:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:56:48,219 INFO L93 Difference]: Finished difference Result 552 states and 720 transitions. [2022-03-18 16:56:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-18 16:56:48,220 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 26 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 176 [2022-03-18 16:56:48,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:56:48,221 INFO L225 Difference]: With dead ends: 552 [2022-03-18 16:56:48,221 INFO L226 Difference]: Without dead ends: 552 [2022-03-18 16:56:48,228 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8984 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7391, Invalid=17731, Unknown=0, NotChecked=0, Total=25122 [2022-03-18 16:56:48,229 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 2315 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 16:56:48,229 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2315 Valid, 65 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 16:56:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-03-18 16:56:48,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 211. [2022-03-18 16:56:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 205 states have (on average 1.2585365853658537) internal successors, (258), 205 states have internal predecessors, (258), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:56:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 263 transitions. [2022-03-18 16:56:48,240 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 263 transitions. Word has length 176 [2022-03-18 16:56:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:56:48,241 INFO L478 AbstractCegarLoop]: Abstraction has 211 states and 263 transitions. [2022-03-18 16:56:48,241 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 26 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:56:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 263 transitions. [2022-03-18 16:56:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-03-18 16:56:48,245 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:56:48,245 INFO L500 BasicCegarLoop]: trace histogram [44, 44, 44, 10, 10, 10, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:56:48,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-18 16:56:48,462 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-18 16:56:48,463 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:56:48,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:56:48,463 INFO L85 PathProgramCache]: Analyzing trace with hash 580463551, now seen corresponding path program 7 times [2022-03-18 16:56:48,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:56:48,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528317174] [2022-03-18 16:56:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:56:48,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:56:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:56:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:56:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:56:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3216 backedges. 1162 proven. 176 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2022-03-18 16:56:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:56:48,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528317174] [2022-03-18 16:56:48,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528317174] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:56:48,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615385369] [2022-03-18 16:56:48,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 16:56:48,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:56:48,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:56:48,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:56:48,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-18 16:56:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:56:48,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 16:56:48,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:56:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3216 backedges. 1162 proven. 176 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2022-03-18 16:56:49,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:56:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3216 backedges. 1162 proven. 176 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2022-03-18 16:56:49,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615385369] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:56:49,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:56:49,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 37 [2022-03-18 16:56:49,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565268433] [2022-03-18 16:56:49,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:56:49,658 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-18 16:56:49,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:56:49,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-18 16:56:49,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=793, Unknown=0, NotChecked=0, Total=1332 [2022-03-18 16:56:49,659 INFO L87 Difference]: Start difference. First operand 211 states and 263 transitions. Second operand has 37 states, 37 states have (on average 3.5135135135135136) internal successors, (130), 36 states have internal predecessors, (130), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:56:50,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:56:50,063 INFO L93 Difference]: Finished difference Result 319 states and 407 transitions. [2022-03-18 16:56:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-18 16:56:50,064 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.5135135135135136) internal successors, (130), 36 states have internal predecessors, (130), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 206 [2022-03-18 16:56:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:56:50,064 INFO L225 Difference]: With dead ends: 319 [2022-03-18 16:56:50,065 INFO L226 Difference]: Without dead ends: 319 [2022-03-18 16:56:50,065 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 392 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1142, Invalid=2164, Unknown=0, NotChecked=0, Total=3306 [2022-03-18 16:56:50,066 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 251 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:56:50,066 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 60 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 16:56:50,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-03-18 16:56:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-03-18 16:56:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 313 states have (on average 1.2843450479233227) internal successors, (402), 313 states have internal predecessors, (402), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:56:50,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 407 transitions. [2022-03-18 16:56:50,070 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 407 transitions. Word has length 206 [2022-03-18 16:56:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:56:50,070 INFO L478 AbstractCegarLoop]: Abstraction has 319 states and 407 transitions. [2022-03-18 16:56:50,070 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.5135135135135136) internal successors, (130), 36 states have internal predecessors, (130), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:56:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 407 transitions. [2022-03-18 16:56:50,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-03-18 16:56:50,072 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:56:50,072 INFO L500 BasicCegarLoop]: trace histogram [80, 80, 80, 10, 10, 10, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:56:50,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-18 16:56:50,290 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-18 16:56:50,290 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:56:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:56:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1757799995, now seen corresponding path program 8 times [2022-03-18 16:56:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:56:50,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955111482] [2022-03-18 16:56:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:56:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:56:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:56:50,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:56:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:56:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10002 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2022-03-18 16:56:50,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:56:50,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955111482] [2022-03-18 16:56:50,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955111482] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:56:50,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788629590] [2022-03-18 16:56:50,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 16:56:50,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:56:50,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:56:50,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:56:50,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-18 16:56:50,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 16:56:50,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 16:56:51,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 16:56:51,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:56:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10002 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2022-03-18 16:56:51,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:56:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10002 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2022-03-18 16:56:52,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788629590] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:56:52,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:56:52,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2022-03-18 16:56:52,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61472793] [2022-03-18 16:56:52,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:56:52,437 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 16:56:52,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:56:52,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 16:56:52,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:56:52,438 INFO L87 Difference]: Start difference. First operand 319 states and 407 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 19 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:56:52,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:56:52,646 INFO L93 Difference]: Finished difference Result 399 states and 512 transitions. [2022-03-18 16:56:52,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 16:56:52,646 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 19 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 314 [2022-03-18 16:56:52,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:56:52,648 INFO L225 Difference]: With dead ends: 399 [2022-03-18 16:56:52,648 INFO L226 Difference]: Without dead ends: 399 [2022-03-18 16:56:52,649 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=218, Invalid=432, Unknown=0, NotChecked=0, Total=650 [2022-03-18 16:56:52,651 INFO L912 BasicCegarLoop]: 23 mSDtfsCounter, 308 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:56:52,651 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 50 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 16:56:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-03-18 16:56:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 382. [2022-03-18 16:56:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 376 states have (on average 1.2925531914893618) internal successors, (486), 376 states have internal predecessors, (486), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 16:56:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 491 transitions. [2022-03-18 16:56:52,659 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 491 transitions. Word has length 314 [2022-03-18 16:56:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:56:52,660 INFO L478 AbstractCegarLoop]: Abstraction has 382 states and 491 transitions. [2022-03-18 16:56:52,660 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 19 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:56:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 491 transitions. [2022-03-18 16:56:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-03-18 16:56:52,662 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:56:52,663 INFO L500 BasicCegarLoop]: trace histogram [100, 100, 100, 10, 10, 10, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:56:52,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-18 16:56:52,875 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-18 16:56:52,875 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:56:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:56:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2021649304, now seen corresponding path program 9 times [2022-03-18 16:56:52,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:56:52,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772338671] [2022-03-18 16:56:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:56:52,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:56:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:56:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:56:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:56:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15565 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 15420 trivial. 0 not checked. [2022-03-18 16:56:53,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:56:53,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772338671] [2022-03-18 16:56:53,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772338671] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:56:53,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276979281] [2022-03-18 16:56:53,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 16:56:53,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:56:53,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:56:53,254 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:56:53,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-18 16:56:54,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-18 16:56:54,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 16:56:54,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-18 16:56:54,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:56:54,066 INFO L390 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 18 treesize of output 16 [2022-03-18 16:56:54,174 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-03-18 16:56:54,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 61 [2022-03-18 16:56:54,268 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-03-18 16:56:54,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 61 [2022-03-18 16:56:54,372 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-03-18 16:56:54,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 61 [2022-03-18 16:56:54,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-18 16:56:54,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-18 16:56:54,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,491 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-03-18 16:56:54,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 68 treesize of output 82 [2022-03-18 16:56:54,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-18 16:56:54,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-18 16:56:54,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:54,723 INFO L356 Elim1Store]: treesize reduction 64, result has 15.8 percent of original size [2022-03-18 16:56:54,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 80 treesize of output 97 [2022-03-18 16:56:55,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-18 16:56:55,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:55,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:55,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:55,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:55,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:55,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:55,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-18 16:56:55,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-18 16:56:55,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 16:56:55,277 INFO L356 Elim1Store]: treesize reduction 116, result has 17.1 percent of original size [2022-03-18 16:56:55,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 99 treesize of output 115 [2022-03-18 16:56:55,479 INFO L356 Elim1Store]: treesize reduction 73, result has 27.0 percent of original size [2022-03-18 16:56:55,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 18 case distinctions, treesize of input 100 treesize of output 71 [2022-03-18 16:56:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15565 backedges. 524 proven. 4 refuted. 0 times theorem prover too weak. 15037 trivial. 0 not checked. [2022-03-18 16:56:55,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:57:00,295 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_main_~x~0_358 Int)) (or (not (<= v_main_~x~0_358 (select (select |c_#memory_int| |c_main_~#Dest~0.base|) (+ (* c_main_~j~0 4) |c_main_~#Dest~0.offset|)))) (forall ((v_ArrVal_1787 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_main_~#distance~0.base|) (+ (* v_main_~x~0_358 4) |c_main_~#distance~0.offset|) v_ArrVal_1787))) (let ((.cse1 (store |c_#memory_int| |c_main_~#distance~0.base| .cse0)) (.cse2 (* c_main_~j~0 4))) (<= (select .cse0 (+ (* (select (select .cse1 |c_main_~#Dest~0.base|) (+ .cse2 4 |c_main_~#Dest~0.offset|)) 4) |c_main_~#distance~0.offset|)) (+ (select .cse0 (+ (* (select (select .cse1 |c_main_~#Source~0.base|) (+ |c_main_~#Source~0.offset| .cse2 4)) 4) |c_main_~#distance~0.offset|)) (select (select .cse1 |c_main_~#Weight~0.base|) (+ |c_main_~#Weight~0.offset| .cse2 4))))))))) is different from false [2022-03-18 16:57:00,991 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_main_~x~0_358 Int) (v_ArrVal_1787 Int)) (or (not (<= v_main_~x~0_358 (select (select |c_#memory_int| |c_main_~#Dest~0.base|) |c_main_~#Dest~0.offset|))) (let ((.cse0 (store (select |c_#memory_int| |c_main_~#distance~0.base|) (+ (* v_main_~x~0_358 4) |c_main_~#distance~0.offset|) v_ArrVal_1787))) (let ((.cse1 (store |c_#memory_int| |c_main_~#distance~0.base| .cse0))) (<= (select .cse0 (+ (* (select (select .cse1 |c_main_~#Dest~0.base|) (+ 4 |c_main_~#Dest~0.offset|)) 4) |c_main_~#distance~0.offset|)) (+ (select (select .cse1 |c_main_~#Weight~0.base|) (+ |c_main_~#Weight~0.offset| 4)) (select .cse0 (+ (* (select (select .cse1 |c_main_~#Source~0.base|) (+ |c_main_~#Source~0.offset| 4)) 4) |c_main_~#distance~0.offset|)))))))) is different from false [2022-03-18 16:57:22,429 WARN L833 $PredicateComparison]: unable to prove that (forall ((main_~i~0 Int)) (or (forall ((v_main_~x~0_358 Int) (|main_~#distance~0.offset| Int) (v_ArrVal_1782 Int) (v_ArrVal_1784 Int) (v_ArrVal_1787 Int)) (let ((.cse2 (let ((.cse3 (* main_~i~0 4))) (store (store (select |c_#memory_int| |c_main_~#distance~0.base|) (+ |main_~#distance~0.offset| 4 .cse3) v_ArrVal_1782) (+ |main_~#distance~0.offset| 8 .cse3) v_ArrVal_1784)))) (or (let ((.cse0 (store .cse2 (+ |main_~#distance~0.offset| (* v_main_~x~0_358 4)) v_ArrVal_1787))) (let ((.cse1 (store |c_#memory_int| |c_main_~#distance~0.base| .cse0))) (<= (select .cse0 (+ (* (select (select .cse1 |c_main_~#Dest~0.base|) (+ 4 |c_main_~#Dest~0.offset|)) 4) |main_~#distance~0.offset|)) (+ (select (select .cse1 |c_main_~#Weight~0.base|) (+ |c_main_~#Weight~0.offset| 4)) (select .cse0 (+ (* 4 (select (select .cse1 |c_main_~#Source~0.base|) (+ |c_main_~#Source~0.offset| 4))) |main_~#distance~0.offset|)))))) (not (<= v_main_~x~0_358 (select (select (store |c_#memory_int| |c_main_~#distance~0.base| .cse2) |c_main_~#Dest~0.base|) |c_main_~#Dest~0.offset|))) (< v_ArrVal_1784 v_ArrVal_1782)))) (not (< (+ main_~i~0 2) c_main_~nodecount~0)) (< (+ main_~i~0 3) c_main_~nodecount~0))) is different from false [2022-03-18 16:57:22,722 INFO L356 Elim1Store]: treesize reduction 428, result has 24.0 percent of original size [2022-03-18 16:57:22,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 17439 treesize of output 7666