/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/nla-digbench-scaling/prod4br-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 19:18:55,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 19:18:55,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 19:18:55,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 19:18:55,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 19:18:55,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 19:18:55,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 19:18:55,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 19:18:55,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 19:18:55,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 19:18:55,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 19:18:55,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 19:18:55,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 19:18:55,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 19:18:55,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 19:18:55,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 19:18:55,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 19:18:55,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 19:18:55,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 19:18:55,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 19:18:55,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 19:18:55,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 19:18:55,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 19:18:55,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 19:18:55,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 19:18:55,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 19:18:55,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 19:18:55,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 19:18:55,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 19:18:55,949 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 19:18:55,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 19:18:55,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 19:18:55,951 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 19:18:55,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 19:18:55,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 19:18:55,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 19:18:55,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 19:18:55,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 19:18:55,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 19:18:55,952 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 19:18:55,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 19:18:55,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 19:18:55,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 19:18:55,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 19:18:55,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 19:18:55,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 19:18:55,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 19:18:55,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 19:18:55,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 19:18:55,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 19:18:55,954 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 19:18:55,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 19:18:56,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 19:18:56,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 19:18:56,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 19:18:56,169 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 19:18:56,171 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 19:18:56,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound10.c [2022-02-23 19:18:56,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7900551/db84057ff14a4dceb92bb14d1c82082c/FLAGc4a92d930 [2022-02-23 19:18:56,645 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 19:18:56,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound10.c [2022-02-23 19:18:56,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7900551/db84057ff14a4dceb92bb14d1c82082c/FLAGc4a92d930 [2022-02-23 19:18:56,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7900551/db84057ff14a4dceb92bb14d1c82082c [2022-02-23 19:18:56,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 19:18:56,664 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 19:18:56,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 19:18:56,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 19:18:56,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 19:18:56,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:18:56" (1/1) ... [2022-02-23 19:18:56,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb1f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56, skipping insertion in model container [2022-02-23 19:18:56,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:18:56" (1/1) ... [2022-02-23 19:18:56,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 19:18:56,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 19:18:56,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound10.c[524,537] [2022-02-23 19:18:56,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 19:18:56,868 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 19:18:56,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound10.c[524,537] [2022-02-23 19:18:56,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 19:18:56,902 INFO L208 MainTranslator]: Completed translation [2022-02-23 19:18:56,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56 WrapperNode [2022-02-23 19:18:56,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 19:18:56,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 19:18:56,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 19:18:56,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 19:18:56,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56" (1/1) ... [2022-02-23 19:18:56,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56" (1/1) ... [2022-02-23 19:18:56,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56" (1/1) ... [2022-02-23 19:18:56,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56" (1/1) ... [2022-02-23 19:18:56,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56" (1/1) ... [2022-02-23 19:18:56,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56" (1/1) ... [2022-02-23 19:18:56,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56" (1/1) ... [2022-02-23 19:18:56,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 19:18:56,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 19:18:56,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 19:18:56,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 19:18:56,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56" (1/1) ... [2022-02-23 19:18:56,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 19:18:56,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:18:56,968 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) [2022-02-23 19:18:56,987 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 [2022-02-23 19:18:57,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 19:18:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 19:18:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 19:18:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 19:18:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 19:18:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 19:18:57,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 19:18:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 19:18:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 19:18:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 19:18:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 19:18:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 19:18:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 19:18:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 19:18:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 19:18:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 19:18:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 19:18:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 19:18:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 19:18:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 19:18:57,065 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 19:18:57,066 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 19:18:57,202 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 19:18:57,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 19:18:57,207 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 19:18:57,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:18:57 BoogieIcfgContainer [2022-02-23 19:18:57,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 19:18:57,209 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 19:18:57,210 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 19:18:57,210 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 19:18:57,213 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:18:57" (1/1) ... [2022-02-23 19:18:57,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 07:18:57 BasicIcfg [2022-02-23 19:18:57,233 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 19:18:57,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 19:18:57,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 19:18:57,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 19:18:57,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:18:56" (1/4) ... [2022-02-23 19:18:57,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594c714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:18:57, skipping insertion in model container [2022-02-23 19:18:57,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:18:56" (2/4) ... [2022-02-23 19:18:57,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594c714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:18:57, skipping insertion in model container [2022-02-23 19:18:57,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:18:57" (3/4) ... [2022-02-23 19:18:57,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594c714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:18:57, skipping insertion in model container [2022-02-23 19:18:57,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 07:18:57" (4/4) ... [2022-02-23 19:18:57,252 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound10.cJordan [2022-02-23 19:18:57,257 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 19:18:57,257 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 19:18:57,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 19:18:57,326 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 19:18:57,327 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 19:18:57,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 19:18:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 19:18:57,352 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:18:57,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:18:57,353 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:18:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:18:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1119019339, now seen corresponding path program 1 times [2022-02-23 19:18:57,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:18:57,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767979326] [2022-02-23 19:18:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:18:57,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:18:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:18:57,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:18:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:18:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:18:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:18:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:18:57,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:18:57,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767979326] [2022-02-23 19:18:57,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767979326] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:18:57,591 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:18:57,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 19:18:57,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589250030] [2022-02-23 19:18:57,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:18:57,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 19:18:57,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:18:57,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 19:18:57,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 19:18:57,627 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 19:18:57,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:18:57,716 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-02-23 19:18:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 19:18:57,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-02-23 19:18:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:18:57,725 INFO L225 Difference]: With dead ends: 33 [2022-02-23 19:18:57,726 INFO L226 Difference]: Without dead ends: 28 [2022-02-23 19:18:57,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 19:18:57,734 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:18:57,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:18:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-02-23 19:18:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-02-23 19:18:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 19:18:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-02-23 19:18:57,774 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2022-02-23 19:18:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:18:57,775 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-02-23 19:18:57,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 19:18:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-02-23 19:18:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-23 19:18:57,777 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:18:57,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:18:57,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 19:18:57,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:18:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:18:57,780 INFO L85 PathProgramCache]: Analyzing trace with hash -496973861, now seen corresponding path program 1 times [2022-02-23 19:18:57,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:18:57,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369134743] [2022-02-23 19:18:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:18:57,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:18:57,812 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:18:57,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379754920] [2022-02-23 19:18:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:18:57,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:18:57,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:18:57,819 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) [2022-02-23 19:18:57,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 19:18:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:18:57,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-23 19:18:57,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:18:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:18:58,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 19:18:58,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:18:58,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369134743] [2022-02-23 19:18:58,026 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:18:58,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379754920] [2022-02-23 19:18:58,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379754920] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:18:58,027 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:18:58,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-23 19:18:58,027 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190614637] [2022-02-23 19:18:58,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:18:58,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-23 19:18:58,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:18:58,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-23 19:18:58,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 19:18:58,029 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 19:18:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:18:58,046 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-02-23 19:18:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-23 19:18:58,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-02-23 19:18:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:18:58,049 INFO L225 Difference]: With dead ends: 29 [2022-02-23 19:18:58,050 INFO L226 Difference]: Without dead ends: 29 [2022-02-23 19:18:58,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 19:18:58,054 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:18:58,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 19:18:58,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-23 19:18:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-02-23 19:18:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 19:18:58,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-02-23 19:18:58,064 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2022-02-23 19:18:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:18:58,064 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-02-23 19:18:58,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 19:18:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-02-23 19:18:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-23 19:18:58,065 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:18:58,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:18:58,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 19:18:58,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:18:58,289 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:18:58,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:18:58,290 INFO L85 PathProgramCache]: Analyzing trace with hash -495871594, now seen corresponding path program 1 times [2022-02-23 19:18:58,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:18:58,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798311466] [2022-02-23 19:18:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:18:58,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:18:58,306 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:18:58,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651404356] [2022-02-23 19:18:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:18:58,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:18:58,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:18:58,312 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) [2022-02-23 19:18:58,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 19:18:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:18:58,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-23 19:18:58,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:18:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:18:58,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 19:18:58,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:18:58,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798311466] [2022-02-23 19:18:58,510 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:18:58,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651404356] [2022-02-23 19:18:58,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651404356] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:18:58,510 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:18:58,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 19:18:58,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031654832] [2022-02-23 19:18:58,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:18:58,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 19:18:58,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:18:58,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 19:18:58,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 19:18:58,511 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 19:18:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:18:58,586 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-02-23 19:18:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 19:18:58,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-02-23 19:18:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:18:58,588 INFO L225 Difference]: With dead ends: 40 [2022-02-23 19:18:58,589 INFO L226 Difference]: Without dead ends: 40 [2022-02-23 19:18:58,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:18:58,590 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:18:58,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 90 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:18:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-02-23 19:18:58,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2022-02-23 19:18:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-23 19:18:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-02-23 19:18:58,596 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2022-02-23 19:18:58,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:18:58,596 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-02-23 19:18:58,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 19:18:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-02-23 19:18:58,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-23 19:18:58,597 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:18:58,597 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:18:58,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 19:18:58,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-23 19:18:58,812 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:18:58,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:18:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1025358414, now seen corresponding path program 1 times [2022-02-23 19:18:58,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:18:58,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933473913] [2022-02-23 19:18:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:18:58,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:18:58,825 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:18:58,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907817783] [2022-02-23 19:18:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:18:58,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:18:58,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:18:58,827 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) [2022-02-23 19:18:58,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 19:18:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:18:58,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-23 19:18:58,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:18:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:18:59,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 19:18:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:18:59,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:18:59,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933473913] [2022-02-23 19:18:59,457 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:18:59,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907817783] [2022-02-23 19:18:59,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907817783] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 19:18:59,457 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 19:18:59,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2022-02-23 19:18:59,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308800932] [2022-02-23 19:18:59,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 19:18:59,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-23 19:18:59,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:18:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-23 19:18:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-02-23 19:18:59,461 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 19:18:59,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:18:59,727 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2022-02-23 19:18:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-23 19:18:59,728 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2022-02-23 19:18:59,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:18:59,730 INFO L225 Difference]: With dead ends: 53 [2022-02-23 19:18:59,730 INFO L226 Difference]: Without dead ends: 53 [2022-02-23 19:18:59,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-02-23 19:18:59,731 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 60 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:18:59,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 139 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 19:18:59,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-23 19:18:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2022-02-23 19:18:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.24) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 19:18:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-02-23 19:18:59,738 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 24 [2022-02-23 19:18:59,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:18:59,739 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-02-23 19:18:59,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 19:18:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-02-23 19:18:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-23 19:18:59,747 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:18:59,748 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:18:59,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-23 19:18:59,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:18:59,960 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:18:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:18:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2117889998, now seen corresponding path program 1 times [2022-02-23 19:18:59,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:18:59,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574653102] [2022-02-23 19:18:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:18:59,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:18:59,971 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:18:59,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558550962] [2022-02-23 19:18:59,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:18:59,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:18:59,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:18:59,972 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) [2022-02-23 19:19:00,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 19:19:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:19:00,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-23 19:19:00,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:19:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:19:00,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 19:19:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:19:00,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:19:00,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574653102] [2022-02-23 19:19:00,155 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:19:00,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558550962] [2022-02-23 19:19:00,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558550962] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 19:19:00,155 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 19:19:00,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-02-23 19:19:00,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260395809] [2022-02-23 19:19:00,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 19:19:00,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 19:19:00,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:19:00,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 19:19:00,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:19:00,157 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-02-23 19:19:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:19:00,237 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2022-02-23 19:19:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 19:19:00,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2022-02-23 19:19:00,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:19:00,240 INFO L225 Difference]: With dead ends: 95 [2022-02-23 19:19:00,240 INFO L226 Difference]: Without dead ends: 93 [2022-02-23 19:19:00,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:19:00,241 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 64 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:19:00,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 180 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:19:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-23 19:19:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2022-02-23 19:19:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 64 states have internal predecessors, (80), 16 states have call successors, (16), 12 states have call predecessors, (16), 10 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-02-23 19:19:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2022-02-23 19:19:00,253 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 27 [2022-02-23 19:19:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:19:00,253 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2022-02-23 19:19:00,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-02-23 19:19:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2022-02-23 19:19:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-23 19:19:00,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:19:00,254 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:19:00,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-23 19:19:00,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:19:00,477 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:19:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:19:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2116787731, now seen corresponding path program 1 times [2022-02-23 19:19:00,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:19:00,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259739388] [2022-02-23 19:19:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:19:00,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:19:00,487 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:19:00,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340921889] [2022-02-23 19:19:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:19:00,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:19:00,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:19:00,489 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) [2022-02-23 19:19:00,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-23 19:19:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:19:00,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-23 19:19:00,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:19:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:19:04,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 19:19:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:19:05,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:19:05,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259739388] [2022-02-23 19:19:05,727 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:19:05,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340921889] [2022-02-23 19:19:05,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340921889] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 19:19:05,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 19:19:05,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 17 [2022-02-23 19:19:05,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718367807] [2022-02-23 19:19:05,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 19:19:05,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-23 19:19:05,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:19:05,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-23 19:19:05,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-02-23 19:19:05,729 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-23 19:19:07,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:19:07,324 INFO L93 Difference]: Finished difference Result 125 states and 160 transitions. [2022-02-23 19:19:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-23 19:19:07,325 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 27 [2022-02-23 19:19:07,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:19:07,328 INFO L225 Difference]: With dead ends: 125 [2022-02-23 19:19:07,328 INFO L226 Difference]: Without dead ends: 121 [2022-02-23 19:19:07,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-02-23 19:19:07,329 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 84 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-23 19:19:07,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 243 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-23 19:19:07,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-02-23 19:19:07,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 79. [2022-02-23 19:19:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 59 states have internal predecessors, (75), 12 states have call successors, (12), 11 states have call predecessors, (12), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-23 19:19:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-02-23 19:19:07,339 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 27 [2022-02-23 19:19:07,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:19:07,339 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-02-23 19:19:07,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-23 19:19:07,339 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-02-23 19:19:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-23 19:19:07,340 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:19:07,340 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:19:07,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-23 19:19:07,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:19:07,552 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:19:07,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:19:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash -410392694, now seen corresponding path program 1 times [2022-02-23 19:19:07,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:19:07,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274629801] [2022-02-23 19:19:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:19:07,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:19:07,561 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:19:07,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280220396] [2022-02-23 19:19:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:19:07,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:19:07,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:19:07,563 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) [2022-02-23 19:19:07,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-23 19:19:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:19:07,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 19:19:07,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:19:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 19:19:07,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 19:19:07,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:19:07,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274629801] [2022-02-23 19:19:07,709 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:19:07,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280220396] [2022-02-23 19:19:07,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280220396] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:19:07,726 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:19:07,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-23 19:19:07,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772625923] [2022-02-23 19:19:07,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:19:07,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 19:19:07,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:19:07,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 19:19:07,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-02-23 19:19:07,727 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-02-23 19:19:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:19:07,819 INFO L93 Difference]: Finished difference Result 114 states and 148 transitions. [2022-02-23 19:19:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 19:19:07,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2022-02-23 19:19:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:19:07,820 INFO L225 Difference]: With dead ends: 114 [2022-02-23 19:19:07,820 INFO L226 Difference]: Without dead ends: 104 [2022-02-23 19:19:07,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:19:07,821 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:19:07,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 157 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:19:07,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-23 19:19:07,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2022-02-23 19:19:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 76 states have internal predecessors, (98), 15 states have call successors, (15), 11 states have call predecessors, (15), 9 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-23 19:19:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2022-02-23 19:19:07,830 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 29 [2022-02-23 19:19:07,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:19:07,830 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2022-02-23 19:19:07,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-02-23 19:19:07,830 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2022-02-23 19:19:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-23 19:19:07,831 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:19:07,831 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:19:07,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-23 19:19:08,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:19:08,044 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:19:08,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:19:08,044 INFO L85 PathProgramCache]: Analyzing trace with hash 159893073, now seen corresponding path program 1 times [2022-02-23 19:19:08,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:19:08,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895830544] [2022-02-23 19:19:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:19:08,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:19:08,053 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:19:08,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898322207] [2022-02-23 19:19:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:19:08,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:19:08,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:19:08,055 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) [2022-02-23 19:19:08,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-23 19:19:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:19:08,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-23 19:19:08,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:19:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-23 19:19:08,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 19:19:08,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:19:08,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895830544] [2022-02-23 19:19:08,182 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:19:08,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898322207] [2022-02-23 19:19:08,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898322207] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:19:08,182 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:19:08,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 19:19:08,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289712309] [2022-02-23 19:19:08,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:19:08,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 19:19:08,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:19:08,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 19:19:08,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:19:08,184 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-23 19:19:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:19:08,228 INFO L93 Difference]: Finished difference Result 139 states and 177 transitions. [2022-02-23 19:19:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 19:19:08,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2022-02-23 19:19:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:19:08,229 INFO L225 Difference]: With dead ends: 139 [2022-02-23 19:19:08,229 INFO L226 Difference]: Without dead ends: 129 [2022-02-23 19:19:08,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-23 19:19:08,230 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:19:08,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 19:19:08,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-23 19:19:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2022-02-23 19:19:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 87 states have internal predecessors, (110), 18 states have call successors, (18), 11 states have call predecessors, (18), 9 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-23 19:19:08,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 143 transitions. [2022-02-23 19:19:08,238 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 143 transitions. Word has length 40 [2022-02-23 19:19:08,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:19:08,238 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 143 transitions. [2022-02-23 19:19:08,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-23 19:19:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 143 transitions. [2022-02-23 19:19:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-23 19:19:08,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:19:08,240 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:19:08,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-23 19:19:08,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:19:08,456 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:19:08,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:19:08,456 INFO L85 PathProgramCache]: Analyzing trace with hash -837179280, now seen corresponding path program 1 times [2022-02-23 19:19:08,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:19:08,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842996487] [2022-02-23 19:19:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:19:08,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:19:08,467 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:19:08,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773964334] [2022-02-23 19:19:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:19:08,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:19:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:19:08,469 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) [2022-02-23 19:19:08,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-23 19:19:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:19:08,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-23 19:19:08,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:19:08,631 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-23 19:19:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-23 19:19:08,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 19:19:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-23 19:19:08,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:19:08,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842996487] [2022-02-23 19:19:08,740 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:19:08,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773964334] [2022-02-23 19:19:08,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773964334] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-23 19:19:08,741 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-23 19:19:08,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-02-23 19:19:08,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217374572] [2022-02-23 19:19:08,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:19:08,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 19:19:08,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:19:08,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 19:19:08,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:19:08,742 INFO L87 Difference]: Start difference. First operand 113 states and 143 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 19:19:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:19:08,885 INFO L93 Difference]: Finished difference Result 118 states and 146 transitions. [2022-02-23 19:19:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 19:19:08,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-02-23 19:19:08,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:19:08,886 INFO L225 Difference]: With dead ends: 118 [2022-02-23 19:19:08,886 INFO L226 Difference]: Without dead ends: 100 [2022-02-23 19:19:08,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:19:08,887 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:19:08,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 126 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:19:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-23 19:19:08,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 66. [2022-02-23 19:19:08,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 50 states have internal predecessors, (63), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 19:19:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2022-02-23 19:19:08,893 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 40 [2022-02-23 19:19:08,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:19:08,893 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2022-02-23 19:19:08,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 19:19:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2022-02-23 19:19:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-23 19:19:08,894 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:19:08,894 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-23 19:19:08,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-23 19:19:09,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-02-23 19:19:09,104 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:19:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:19:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1169624165, now seen corresponding path program 2 times [2022-02-23 19:19:09,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:19:09,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912192602] [2022-02-23 19:19:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:19:09,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:19:09,113 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:19:09,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132267277] [2022-02-23 19:19:09,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 19:19:09,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:19:09,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:19:09,114 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) [2022-02-23 19:19:09,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-23 19:19:09,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 19:19:09,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 19:19:09,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-23 19:19:09,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:19:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 19:19:09,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 19:19:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 19:19:09,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:19:09,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912192602] [2022-02-23 19:19:09,427 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:19:09,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132267277] [2022-02-23 19:19:09,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132267277] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 19:19:09,427 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 19:19:09,427 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-02-23 19:19:09,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116452248] [2022-02-23 19:19:09,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 19:19:09,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-23 19:19:09,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:19:09,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-23 19:19:09,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-02-23 19:19:09,429 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2022-02-23 19:19:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:19:09,580 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2022-02-23 19:19:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-23 19:19:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 54 [2022-02-23 19:19:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:19:09,582 INFO L225 Difference]: With dead ends: 132 [2022-02-23 19:19:09,582 INFO L226 Difference]: Without dead ends: 132 [2022-02-23 19:19:09,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-02-23 19:19:09,583 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 168 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:19:09,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 256 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:19:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-02-23 19:19:09,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-02-23 19:19:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 104 states have internal predecessors, (135), 15 states have call successors, (15), 14 states have call predecessors, (15), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-02-23 19:19:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 163 transitions. [2022-02-23 19:19:09,588 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 163 transitions. Word has length 54 [2022-02-23 19:19:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:19:09,589 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 163 transitions. [2022-02-23 19:19:09,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2022-02-23 19:19:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 163 transitions. [2022-02-23 19:19:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-23 19:19:09,592 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:19:09,592 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:19:09,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-23 19:19:09,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-23 19:19:09,815 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:19:09,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:19:09,815 INFO L85 PathProgramCache]: Analyzing trace with hash 93180219, now seen corresponding path program 3 times [2022-02-23 19:19:09,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:19:09,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124093755] [2022-02-23 19:19:09,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:19:09,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:19:09,826 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:19:09,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529428992] [2022-02-23 19:19:09,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 19:19:09,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:19:09,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:19:09,828 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) [2022-02-23 19:19:09,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-23 19:19:09,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-02-23 19:19:09,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-02-23 19:19:09,972 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-23 19:19:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 19:19:10,052 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-23 19:19:10,052 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-23 19:19:10,053 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 19:19:10,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-23 19:19:10,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-23 19:19:10,278 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:19:10,280 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 19:19:10,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:19:10 BasicIcfg [2022-02-23 19:19:10,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 19:19:10,329 INFO L158 Benchmark]: Toolchain (without parser) took 13665.07ms. Allocated memory was 196.1MB in the beginning and 302.0MB in the end (delta: 105.9MB). Free memory was 142.3MB in the beginning and 147.8MB in the end (delta: -5.5MB). Peak memory consumption was 101.7MB. Max. memory is 8.0GB. [2022-02-23 19:19:10,329 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 19:19:10,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.06ms. Allocated memory was 196.1MB in the beginning and 302.0MB in the end (delta: 105.9MB). Free memory was 142.1MB in the beginning and 273.0MB in the end (delta: -130.9MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-02-23 19:19:10,330 INFO L158 Benchmark]: Boogie Preprocessor took 25.41ms. Allocated memory is still 302.0MB. Free memory was 273.0MB in the beginning and 271.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 19:19:10,330 INFO L158 Benchmark]: RCFGBuilder took 279.61ms. Allocated memory is still 302.0MB. Free memory was 271.5MB in the beginning and 260.3MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 19:19:10,330 INFO L158 Benchmark]: IcfgTransformer took 23.83ms. Allocated memory is still 302.0MB. Free memory was 259.9MB in the beginning and 258.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 19:19:10,331 INFO L158 Benchmark]: TraceAbstraction took 13094.05ms. Allocated memory is still 302.0MB. Free memory was 258.2MB in the beginning and 147.8MB in the end (delta: 110.4MB). Peak memory consumption was 112.0MB. Max. memory is 8.0GB. [2022-02-23 19:19:10,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.06ms. Allocated memory was 196.1MB in the beginning and 302.0MB in the end (delta: 105.9MB). Free memory was 142.1MB in the beginning and 273.0MB in the end (delta: -130.9MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.41ms. Allocated memory is still 302.0MB. Free memory was 273.0MB in the beginning and 271.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 279.61ms. Allocated memory is still 302.0MB. Free memory was 271.5MB in the beginning and 260.3MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 23.83ms. Allocated memory is still 302.0MB. Free memory was 259.9MB in the beginning and 258.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 13094.05ms. Allocated memory is still 302.0MB. Free memory was 258.2MB in the beginning and 147.8MB in the end (delta: 110.4MB). Peak memory consumption was 112.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [\old(counter)=15, counter=0] [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L26] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=1024, y=1024] [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [\old(counter)=0, a=1024, b=1024, counter=0, p=1, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=1024, b=1024, counter=1, counter++=0, p=1, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=1024, b=1024, counter=1, p=1, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=1024, b=1024, counter=1, p=1, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=512, b=512, counter=1, p=4, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=512, b=512, counter=2, counter++=1, p=4, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=512, b=512, counter=2, p=4, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=512, b=512, counter=2, p=4, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=256, b=256, counter=2, p=16, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=256, b=256, counter=3, counter++=2, p=16, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=256, b=256, counter=3, p=16, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=256, b=256, counter=3, p=16, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=128, b=128, counter=3, p=64, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=128, b=128, counter=4, counter++=3, p=64, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=128, b=128, counter=4, p=64, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=128, b=128, counter=4, p=64, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=64, b=64, counter=4, p=256, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=64, b=64, counter=5, counter++=4, p=256, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=64, b=64, counter=5, p=256, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=64, b=64, counter=5, p=256, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=32, b=32, counter=5, p=1024, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=32, b=32, counter=6, counter++=5, p=1024, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=32, b=32, counter=6, p=1024, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=32, b=32, counter=6, p=1024, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=16, b=16, counter=6, p=4096, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=16, b=16, counter=7, counter++=6, p=4096, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=16, b=16, counter=7, p=4096, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=16, b=16, counter=7, p=4096, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=8, b=8, counter=7, p=16384, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=8, b=8, counter=8, counter++=7, p=16384, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=8, b=8, counter=8, p=16384, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=8, b=8, counter=8, p=16384, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=4, b=4, counter=8, p=65536, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=4, b=4, counter=9, counter++=8, p=65536, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=4, b=4, counter=9, p=65536, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=4, b=4, counter=9, p=65536, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=2, b=2, counter=9, p=262144, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=2, b=2, counter=10, counter++=9, p=262144, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=2, b=2, counter=10, p=262144, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=2, b=2, counter=10, p=262144, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=1, b=1, counter=10, p=1048576, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [\old(counter)=0, a=1, b=1, counter=11, counter++=10, p=1048576, q=0, x=1024, y=1024] [L33] COND FALSE !(counter++<10) [L56] CALL __VERIFIER_assert(q == (long long) x * y) VAL [\old(cond)=0, \old(counter)=0, counter=11] [L12] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] [L14] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.0s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 454 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 440 mSDsluCounter, 1435 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1125 mSDsCounter, 196 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 847 IncrementalHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 196 mSolverCounterUnsat, 310 mSDtfsCounter, 847 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 477 GetRequests, 373 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=10, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 124 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 1534 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1048 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 118/236 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-23 19:19:10,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...