/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/array-fpi/ss2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 11:57:43,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 11:57:43,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 11:57:43,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 11:57:43,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 11:57:43,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 11:57:43,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 11:57:43,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 11:57:43,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 11:57:43,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 11:57:43,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 11:57:43,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 11:57:43,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 11:57:43,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 11:57:43,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 11:57:43,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 11:57:43,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 11:57:43,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 11:57:43,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 11:57:43,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 11:57:43,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 11:57:43,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 11:57:43,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 11:57:43,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 11:57:43,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 11:57:43,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 11:57:43,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 11:57:43,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 11:57:43,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 11:57:43,158 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 11:57:43,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 11:57:43,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 11:57:43,160 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 11:57:43,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 11:57:43,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 11:57:43,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 11:57:43,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 11:57:43,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 11:57:43,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 11:57:43,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 11:57:43,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 11:57:43,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 11:57:43,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 11:57:43,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 11:57:43,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 11:57:43,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 11:57:43,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 11:57:43,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 11:57:43,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 11:57:43,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 11:57:43,162 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 11:57:43,163 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 11:57:43,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 11:57:43,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 11:57:43,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 11:57:43,355 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 11:57:43,358 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 11:57:43,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2.c [2022-01-31 11:57:43,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dac3e635/ef96c2498ef84c49a2029b86f714b210/FLAG53d2a86d7 [2022-01-31 11:57:43,731 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 11:57:43,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss2.c [2022-01-31 11:57:43,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dac3e635/ef96c2498ef84c49a2029b86f714b210/FLAG53d2a86d7 [2022-01-31 11:57:43,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dac3e635/ef96c2498ef84c49a2029b86f714b210 [2022-01-31 11:57:43,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 11:57:43,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 11:57:43,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 11:57:43,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 11:57:43,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 11:57:43,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:57:43" (1/1) ... [2022-01-31 11:57:43,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5bb3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43, skipping insertion in model container [2022-01-31 11:57:43,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:57:43" (1/1) ... [2022-01-31 11:57:43,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 11:57:43,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 11:57:43,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss2.c[586,599] [2022-01-31 11:57:43,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 11:57:43,911 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 11:57:43,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss2.c[586,599] [2022-01-31 11:57:43,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 11:57:43,934 INFO L208 MainTranslator]: Completed translation [2022-01-31 11:57:43,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43 WrapperNode [2022-01-31 11:57:43,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 11:57:43,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 11:57:43,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 11:57:43,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 11:57:43,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43" (1/1) ... [2022-01-31 11:57:43,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43" (1/1) ... [2022-01-31 11:57:43,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43" (1/1) ... [2022-01-31 11:57:43,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43" (1/1) ... [2022-01-31 11:57:43,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43" (1/1) ... [2022-01-31 11:57:43,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43" (1/1) ... [2022-01-31 11:57:43,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43" (1/1) ... [2022-01-31 11:57:43,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 11:57:43,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 11:57:43,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 11:57:43,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 11:57:43,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43" (1/1) ... [2022-01-31 11:57:43,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 11:57:43,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:57:43,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 11:57:44,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 11:57:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 11:57:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 11:57:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 11:57:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 11:57:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 11:57:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 11:57:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 11:57:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 11:57:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 11:57:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 11:57:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 11:57:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 11:57:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 11:57:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 11:57:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 11:57:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 11:57:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 11:57:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 11:57:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 11:57:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 11:57:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 11:57:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 11:57:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 11:57:44,083 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 11:57:44,084 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 11:57:44,204 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 11:57:44,208 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 11:57:44,208 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-31 11:57:44,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:57:44 BoogieIcfgContainer [2022-01-31 11:57:44,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 11:57:44,210 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 11:57:44,210 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 11:57:44,211 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 11:57:44,213 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:57:44" (1/1) ... [2022-01-31 11:57:44,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 11:57:44 BasicIcfg [2022-01-31 11:57:44,246 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 11:57:44,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 11:57:44,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 11:57:44,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 11:57:44,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:57:43" (1/4) ... [2022-01-31 11:57:44,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749032c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:57:44, skipping insertion in model container [2022-01-31 11:57:44,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:57:43" (2/4) ... [2022-01-31 11:57:44,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749032c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:57:44, skipping insertion in model container [2022-01-31 11:57:44,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:57:44" (3/4) ... [2022-01-31 11:57:44,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749032c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:57:44, skipping insertion in model container [2022-01-31 11:57:44,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 11:57:44" (4/4) ... [2022-01-31 11:57:44,250 INFO L111 eAbstractionObserver]: Analyzing ICFG ss2.cJordan [2022-01-31 11:57:44,259 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 11:57:44,260 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 11:57:44,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 11:57:44,294 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 11:57:44,294 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 11:57:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 11:57:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 11:57:44,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:57:44,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:57:44,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:57:44,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:57:44,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1538251681, now seen corresponding path program 1 times [2022-01-31 11:57:44,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:57:44,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432402659] [2022-01-31 11:57:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:57:44,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:57:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:57:44,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:57:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:57:44,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:57:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:57:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:57:44,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:57:44,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432402659] [2022-01-31 11:57:44,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432402659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:57:44,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:57:44,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 11:57:44,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127328750] [2022-01-31 11:57:44,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:57:44,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 11:57:44,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:57:44,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 11:57:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 11:57:44,489 INFO L87 Difference]: Start difference. First operand has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:57:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:57:44,575 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2022-01-31 11:57:44,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 11:57:44,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 30 [2022-01-31 11:57:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:57:44,584 INFO L225 Difference]: With dead ends: 46 [2022-01-31 11:57:44,585 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 11:57:44,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 11:57:44,592 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:57:44,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 57 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:57:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 11:57:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-31 11:57:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:57:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-01-31 11:57:44,621 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2022-01-31 11:57:44,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:57:44,622 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-01-31 11:57:44,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:57:44,623 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-01-31 11:57:44,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 11:57:44,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:57:44,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:57:44,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 11:57:44,624 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:57:44,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:57:44,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1476344410, now seen corresponding path program 1 times [2022-01-31 11:57:44,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:57:44,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361765617] [2022-01-31 11:57:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:57:44,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:57:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:57:44,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:57:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:57:44,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:57:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:57:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:57:44,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:57:44,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361765617] [2022-01-31 11:57:44,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361765617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:57:44,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:57:44,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 11:57:44,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835778921] [2022-01-31 11:57:44,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:57:44,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 11:57:44,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:57:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 11:57:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 11:57:44,778 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:57:44,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:57:44,902 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-01-31 11:57:44,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 11:57:44,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-01-31 11:57:44,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:57:44,905 INFO L225 Difference]: With dead ends: 57 [2022-01-31 11:57:44,906 INFO L226 Difference]: Without dead ends: 57 [2022-01-31 11:57:44,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 11:57:44,910 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:57:44,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 35 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:57:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-31 11:57:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2022-01-31 11:57:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:57:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-01-31 11:57:44,926 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2022-01-31 11:57:44,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:57:44,930 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-01-31 11:57:44,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:57:44,931 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-01-31 11:57:44,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 11:57:44,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:57:44,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:57:44,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 11:57:44,932 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:57:44,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:57:44,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1781419240, now seen corresponding path program 1 times [2022-01-31 11:57:44,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:57:44,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89235733] [2022-01-31 11:57:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:57:44,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:57:44,983 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:57:44,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986347102] [2022-01-31 11:57:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:57:44,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:57:44,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:57:44,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:57:44,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 11:57:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:57:45,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-31 11:57:45,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:57:45,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-31 11:57:45,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-31 11:57:45,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 11:57:45,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-01-31 11:57:45,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-01-31 11:57:45,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-01-31 11:57:45,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 23 [2022-01-31 11:57:45,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-01-31 11:57:45,941 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2022-01-31 11:57:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:57:46,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:57:47,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:57:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:57:48,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:57:48,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89235733] [2022-01-31 11:57:48,511 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:57:48,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986347102] [2022-01-31 11:57:48,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986347102] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:57:48,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 11:57:48,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 42 [2022-01-31 11:57:48,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430186922] [2022-01-31 11:57:48,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 11:57:48,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 11:57:48,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:57:48,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 11:57:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1476, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 11:57:48,513 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 42 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:57:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:57:56,572 INFO L93 Difference]: Finished difference Result 94 states and 109 transitions. [2022-01-31 11:57:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 11:57:56,573 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-01-31 11:57:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:57:56,574 INFO L225 Difference]: With dead ends: 94 [2022-01-31 11:57:56,574 INFO L226 Difference]: Without dead ends: 94 [2022-01-31 11:57:56,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=539, Invalid=3001, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 11:57:56,576 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 107 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-31 11:57:56,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 381 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 992 Invalid, 0 Unknown, 14 Unchecked, 2.9s Time] [2022-01-31 11:57:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-31 11:57:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2022-01-31 11:57:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 68 states have internal predecessors, (80), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 11:57:56,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2022-01-31 11:57:56,584 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 42 [2022-01-31 11:57:56,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:57:56,584 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2022-01-31 11:57:56,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:57:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2022-01-31 11:57:56,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 11:57:56,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:57:56,585 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:57:56,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 11:57:56,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:57:56,803 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:57:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:57:56,804 INFO L85 PathProgramCache]: Analyzing trace with hash 477776790, now seen corresponding path program 2 times [2022-01-31 11:57:56,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:57:56,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656573742] [2022-01-31 11:57:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:57:56,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:57:56,833 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:57:56,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682745403] [2022-01-31 11:57:56,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 11:57:56,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:57:56,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:57:56,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:57:56,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 11:57:56,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 11:57:56,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:57:56,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 11:57:56,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:57:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 11:57:56,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:57:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 11:57:57,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:57:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656573742] [2022-01-31 11:57:57,049 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:57:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682745403] [2022-01-31 11:57:57,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682745403] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:57:57,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 11:57:57,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 11:57:57,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358066362] [2022-01-31 11:57:57,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 11:57:57,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 11:57:57,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:57:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 11:57:57,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 11:57:57,050 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:57:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:57:57,217 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2022-01-31 11:57:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 11:57:57,228 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 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 44 [2022-01-31 11:57:57,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:57:57,228 INFO L225 Difference]: With dead ends: 132 [2022-01-31 11:57:57,228 INFO L226 Difference]: Without dead ends: 100 [2022-01-31 11:57:57,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-31 11:57:57,229 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 80 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:57:57,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 114 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:57:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-31 11:57:57,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2022-01-31 11:57:57,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 71 states have internal predecessors, (83), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:57:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2022-01-31 11:57:57,234 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 44 [2022-01-31 11:57:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:57:57,234 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2022-01-31 11:57:57,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:57:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2022-01-31 11:57:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 11:57:57,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:57:57,235 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:57:57,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 11:57:57,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-31 11:57:57,454 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:57:57,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:57:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash -745812652, now seen corresponding path program 3 times [2022-01-31 11:57:57,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:57:57,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282423193] [2022-01-31 11:57:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:57:57,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:57:57,469 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:57:57,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181149176] [2022-01-31 11:57:57,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 11:57:57,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:57:57,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:57:57,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:57:57,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 11:57:57,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 11:57:57,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:57:57,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 11:57:57,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:57:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 11:57:57,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:57:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 11:57:57,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:57:57,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282423193] [2022-01-31 11:57:57,698 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:57:57,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181149176] [2022-01-31 11:57:57,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181149176] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:57:57,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 11:57:57,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 11:57:57,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869579636] [2022-01-31 11:57:57,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 11:57:57,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 11:57:57,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:57:57,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 11:57:57,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 11:57:57,700 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:57:57,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:57:57,836 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2022-01-31 11:57:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 11:57:57,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 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 44 [2022-01-31 11:57:57,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:57:57,837 INFO L225 Difference]: With dead ends: 72 [2022-01-31 11:57:57,837 INFO L226 Difference]: Without dead ends: 72 [2022-01-31 11:57:57,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-31 11:57:57,837 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 96 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:57:57,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 87 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:57:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-31 11:57:57,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2022-01-31 11:57:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:57:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2022-01-31 11:57:57,841 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 44 [2022-01-31 11:57:57,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:57:57,841 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2022-01-31 11:57:57,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:57:57,841 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2022-01-31 11:57:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 11:57:57,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:57:57,842 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:57:57,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 11:57:58,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:57:58,060 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:57:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:57:58,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1829560330, now seen corresponding path program 4 times [2022-01-31 11:57:58,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:57:58,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043215861] [2022-01-31 11:57:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:57:58,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:57:58,081 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:57:58,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98993623] [2022-01-31 11:57:58,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 11:57:58,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:57:58,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:57:58,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:57:58,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 11:57:58,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 11:57:58,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:57:58,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 87 conjunts are in the unsatisfiable core [2022-01-31 11:57:58,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:57:58,178 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-31 11:57:58,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 11:57:58,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-01-31 11:57:58,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:57:58,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-01-31 11:57:58,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-01-31 11:57:58,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:57:58,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-01-31 11:57:58,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-01-31 11:57:58,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:57:58,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2022-01-31 11:57:58,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:58,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2022-01-31 11:57:59,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:59,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:59,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:57:59,044 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 39 [2022-01-31 11:57:59,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:59,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:59,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 37 [2022-01-31 11:57:59,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:59,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:59,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:57:59,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 41 [2022-01-31 11:57:59,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:59,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:59,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:59,429 INFO L353 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-01-31 11:57:59,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 52 [2022-01-31 11:57:59,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:57:59,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-01-31 11:57:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:57:59,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:58:01,920 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~i~0_93 Int)) (or (forall ((v_ArrVal_239 Int)) (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (select (store (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset (* v_main_~i~0_93 8)) v_ArrVal_239) c_main_~a~0.offset))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_93)))) is different from false [2022-01-31 11:58:02,958 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~i~0_93 Int) (v_ArrVal_239 Int)) (or (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (select (store (let ((.cse0 (select |c_#memory_int| c_main_~a~0.base)) (.cse1 (+ c_main_~a~0.offset (* c_main_~i~0 8)))) (store .cse0 .cse1 (+ (select (select |c_#memory_int| |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|) (select .cse0 .cse1)))) (+ c_main_~a~0.offset (* v_main_~i~0_93 8)) v_ArrVal_239) c_main_~a~0.offset)) (not (<= (+ c_main_~i~0 1) v_main_~i~0_93)))) is different from false [2022-01-31 11:58:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-01-31 11:58:34,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:58:34,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043215861] [2022-01-31 11:58:34,084 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:58:34,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98993623] [2022-01-31 11:58:34,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98993623] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:58:34,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 11:58:34,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 60 [2022-01-31 11:58:34,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512747305] [2022-01-31 11:58:34,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 11:58:34,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 11:58:34,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:58:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 11:58:34,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3075, Unknown=3, NotChecked=226, Total=3540 [2022-01-31 11:58:34,086 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 60 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 59 states have internal predecessors, (86), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:58:52,632 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| c_main_~a~0.base))) (and (forall ((v_main_~i~0_93 Int)) (or (forall ((v_ArrVal_239 Int)) (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (select (store (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset (* v_main_~i~0_93 8)) v_ArrVal_239) c_main_~a~0.offset))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_93)))) (<= c_~N~0 2) (= c_main_~i~0 0) (exists ((|main_~#sum~0.offset| Int) (|main_~#sum~0.base| Int)) (and (= (select (select |c_#memory_int| |main_~#sum~0.base|) |main_~#sum~0.offset|) 6) (< (+ c_main_~a~0.base 1) |main_~#sum~0.base|))) (= c_main_~a~0.offset 0) (< 1 c_~N~0) (= (select .cse0 (+ c_main_~a~0.offset 8)) 2) (= (+ (select .cse0 (+ c_main_~a~0.offset (* c_main_~i~0 8))) (- 6)) 2))) is different from false [2022-01-31 11:59:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:59:49,163 INFO L93 Difference]: Finished difference Result 126 states and 144 transitions. [2022-01-31 11:59:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 11:59:49,164 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 59 states have internal predecessors, (86), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-01-31 11:59:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:59:49,165 INFO L225 Difference]: With dead ends: 126 [2022-01-31 11:59:49,165 INFO L226 Difference]: Without dead ends: 126 [2022-01-31 11:59:49,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 106.9s TimeCoverageRelationStatistics Valid=294, Invalid=4259, Unknown=15, NotChecked=402, Total=4970 [2022-01-31 11:59:49,168 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 35 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1124 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 11:59:49,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 599 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 303 Invalid, 0 Unknown, 1124 Unchecked, 0.2s Time] [2022-01-31 11:59:49,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-31 11:59:49,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 108. [2022-01-31 11:59:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 98 states have (on average 1.163265306122449) internal successors, (114), 99 states have internal predecessors, (114), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 11:59:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2022-01-31 11:59:49,178 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 54 [2022-01-31 11:59:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:59:49,178 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2022-01-31 11:59:49,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 59 states have internal predecessors, (86), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2022-01-31 11:59:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 11:59:49,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:59:49,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:59:49,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 11:59:49,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:49,380 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:59:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:59:49,381 INFO L85 PathProgramCache]: Analyzing trace with hash 295568392, now seen corresponding path program 5 times [2022-01-31 11:59:49,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:59:49,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904814555] [2022-01-31 11:59:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:49,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:59:49,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:59:49,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134171207] [2022-01-31 11:59:49,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 11:59:49,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:49,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:59:49,407 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) [2022-01-31 11:59:49,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 11:59:49,571 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-31 11:59:49,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:59:49,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 11:59:49,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:59:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 11:59:49,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:59:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 11:59:49,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:59:49,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904814555] [2022-01-31 11:59:49,781 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:59:49,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134171207] [2022-01-31 11:59:49,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134171207] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:59:49,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 11:59:49,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 11:59:49,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18776709] [2022-01-31 11:59:49,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 11:59:49,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 11:59:49,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:59:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 11:59:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 11:59:49,783 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:59:49,989 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2022-01-31 11:59:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 11:59:49,990 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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 56 [2022-01-31 11:59:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:59:49,991 INFO L225 Difference]: With dead ends: 170 [2022-01-31 11:59:49,992 INFO L226 Difference]: Without dead ends: 167 [2022-01-31 11:59:49,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-31 11:59:49,992 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 125 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 11:59:49,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 115 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 11:59:49,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-01-31 11:59:49,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 143. [2022-01-31 11:59:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 130 states have (on average 1.1076923076923078) internal successors, (144), 132 states have internal predecessors, (144), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 11:59:49,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 156 transitions. [2022-01-31 11:59:49,998 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 156 transitions. Word has length 56 [2022-01-31 11:59:49,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:59:49,998 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 156 transitions. [2022-01-31 11:59:49,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:49,998 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 156 transitions. [2022-01-31 11:59:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 11:59:50,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:59:50,016 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:59:50,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 11:59:50,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:50,217 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:59:50,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:59:50,217 INFO L85 PathProgramCache]: Analyzing trace with hash 421888070, now seen corresponding path program 6 times [2022-01-31 11:59:50,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:59:50,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125938837] [2022-01-31 11:59:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:50,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:59:50,230 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:59:50,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703662873] [2022-01-31 11:59:50,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 11:59:50,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:50,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:59:50,235 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) [2022-01-31 11:59:50,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 11:59:50,309 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-31 11:59:50,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:59:50,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 11:59:50,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:59:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 11:59:50,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:59:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 11:59:50,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:59:50,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125938837] [2022-01-31 11:59:50,502 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:59:50,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703662873] [2022-01-31 11:59:50,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703662873] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:59:50,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 11:59:50,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 11:59:50,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510874465] [2022-01-31 11:59:50,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 11:59:50,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 11:59:50,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:59:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 11:59:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 11:59:50,504 INFO L87 Difference]: Start difference. First operand 143 states and 156 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:59:50,792 INFO L93 Difference]: Finished difference Result 135 states and 144 transitions. [2022-01-31 11:59:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 11:59:50,792 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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 56 [2022-01-31 11:59:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:59:50,793 INFO L225 Difference]: With dead ends: 135 [2022-01-31 11:59:50,793 INFO L226 Difference]: Without dead ends: 133 [2022-01-31 11:59:50,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-31 11:59:50,793 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 129 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 11:59:50,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 145 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 11:59:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-31 11:59:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2022-01-31 11:59:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 103 states have internal predecessors, (111), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 11:59:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2022-01-31 11:59:50,798 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 56 [2022-01-31 11:59:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:59:50,798 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2022-01-31 11:59:50,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2022-01-31 11:59:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 11:59:50,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:59:50,799 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:59:50,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 11:59:51,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:51,016 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:59:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:59:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -877408961, now seen corresponding path program 1 times [2022-01-31 11:59:51,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:59:51,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223551765] [2022-01-31 11:59:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:51,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:59:51,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:59:51,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119626481] [2022-01-31 11:59:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:51,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:51,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:59:51,036 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) [2022-01-31 11:59:51,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 11:59:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:59:51,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-31 11:59:51,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:59:51,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-31 11:59:51,180 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-31 11:59:51,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:51,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-01-31 11:59:51,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:51,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:51,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-01-31 11:59:51,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:51,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 32 [2022-01-31 11:59:51,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-01-31 11:59:51,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-01-31 11:59:51,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:51,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-01-31 11:59:51,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:51,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:51,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 37 [2022-01-31 11:59:51,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:51,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-01-31 11:59:51,709 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 11:59:51,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2022-01-31 11:59:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 11:59:51,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:59:51,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:59:51,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223551765] [2022-01-31 11:59:51,867 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:59:51,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119626481] [2022-01-31 11:59:51,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119626481] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:59:51,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 11:59:51,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-01-31 11:59:51,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400851798] [2022-01-31 11:59:51,868 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 11:59:51,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 11:59:51,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:59:51,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 11:59:51,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2022-01-31 11:59:51,869 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 11:59:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:59:52,241 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2022-01-31 11:59:52,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 11:59:52,242 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 62 [2022-01-31 11:59:52,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:59:52,242 INFO L225 Difference]: With dead ends: 118 [2022-01-31 11:59:52,242 INFO L226 Difference]: Without dead ends: 75 [2022-01-31 11:59:52,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 11:59:52,243 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 49 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 11:59:52,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 422 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 460 Invalid, 0 Unknown, 84 Unchecked, 0.3s Time] [2022-01-31 11:59:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-31 11:59:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2022-01-31 11:59:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:59:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2022-01-31 11:59:52,246 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 62 [2022-01-31 11:59:52,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:59:52,246 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2022-01-31 11:59:52,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 11:59:52,246 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2022-01-31 11:59:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 11:59:52,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:59:52,247 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:59:52,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 11:59:52,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:52,460 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:59:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:59:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1948511356, now seen corresponding path program 7 times [2022-01-31 11:59:52,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:59:52,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534221015] [2022-01-31 11:59:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:52,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:59:52,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:59:52,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984672635] [2022-01-31 11:59:52,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 11:59:52,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:52,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:59:52,493 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) [2022-01-31 11:59:52,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 11:59:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:59:52,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 125 conjunts are in the unsatisfiable core [2022-01-31 11:59:52,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:59:52,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-31 11:59:52,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-31 11:59:52,623 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 11:59:52,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-01-31 11:59:52,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-01-31 11:59:52,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:52,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-01-31 11:59:52,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:52,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:52,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2022-01-31 11:59:53,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 55 [2022-01-31 11:59:53,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:53,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,180 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2022-01-31 11:59:53,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:53,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-01-31 11:59:53,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2022-01-31 11:59:53,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:53,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 51 [2022-01-31 11:59:53,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:53,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 58 [2022-01-31 11:59:53,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,760 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 47 [2022-01-31 11:59:53,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:53,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:53,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 51 [2022-01-31 11:59:54,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:54,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 53 [2022-01-31 11:59:54,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,139 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 47 [2022-01-31 11:59:54,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:54,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2022-01-31 11:59:54,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:54,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 54 [2022-01-31 11:59:54,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:54,600 INFO L353 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-01-31 11:59:54,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 50 [2022-01-31 11:59:54,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-01-31 11:59:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:59:54,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:59:57,206 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~i~0_178 Int)) (or (forall ((v_ArrVal_576 Int)) (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (select (store (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset (* 8 v_main_~i~0_178)) v_ArrVal_576) c_main_~a~0.offset))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_178)))) is different from false [2022-01-31 12:05:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 1 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-31 12:05:25,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:05:25,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534221015] [2022-01-31 12:05:25,159 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:05:25,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984672635] [2022-01-31 12:05:25,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984672635] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:05:25,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:05:25,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 84 [2022-01-31 12:05:25,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121280484] [2022-01-31 12:05:25,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 12:05:25,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 12:05:25,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:05:25,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 12:05:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=6324, Unknown=118, NotChecked=162, Total=6972 [2022-01-31 12:05:25,164 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 84 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 83 states have internal predecessors, (110), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:12:10,595 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| c_main_~a~0.base))) (and (exists ((|main_~#sum~0.offset| Int) (|main_~#sum~0.base| Int)) (and (not (= c_main_~a~0.base |main_~#sum~0.base|)) (= (select (select |c_#memory_int| |main_~#sum~0.base|) |main_~#sum~0.offset|) 12))) (= 0 (+ (- 1) c_main_~i~0)) (< 2 c_~N~0) (= 15 (select .cse0 (+ c_main_~a~0.offset (* c_main_~i~0 8) (- 8)))) (= 3 (select .cse0 (+ c_main_~a~0.offset 16))) (= c_main_~a~0.offset 0) (<= c_~N~0 3) (forall ((v_main_~i~0_178 Int)) (or (forall ((v_ArrVal_576 Int)) (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (select (store (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset (* 8 v_main_~i~0_178)) v_ArrVal_576) c_main_~a~0.offset))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_178)))))) is different from false [2022-01-31 12:12:12,606 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|main_~#sum~0.offset| Int) (|main_~#sum~0.base| Int)) (and (not (= c_main_~a~0.base |main_~#sum~0.base|)) (= (select (select |c_#memory_int| |main_~#sum~0.base|) |main_~#sum~0.offset|) 12))) (< 2 c_~N~0) (= c_main_~a~0.offset 0) (= (select (select |c_#memory_int| c_main_~a~0.base) c_main_~a~0.offset) 15) (<= c_~N~0 3) (forall ((v_main_~i~0_178 Int)) (or (forall ((v_ArrVal_576 Int)) (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (select (store (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset (* 8 v_main_~i~0_178)) v_ArrVal_576) c_main_~a~0.offset))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_178)))) (forall ((v_ArrVal_576 Int) (v_main_~i~0_178 Int) (v_ArrVal_573 Int)) (or (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (select (store (store (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset (* c_main_~i~0 8) 8) v_ArrVal_573) (+ c_main_~a~0.offset (* 8 v_main_~i~0_178)) v_ArrVal_576) c_main_~a~0.offset)) (not (<= (+ c_main_~i~0 2) v_main_~i~0_178))))) is different from false [2022-01-31 12:12:14,614 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| c_main_~a~0.base) c_main_~a~0.offset) (+ (* c_~N~0 2) (* c_~N~0 c_~N~0))) (forall ((v_main_~i~0_178 Int)) (or (forall ((v_ArrVal_576 Int)) (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (select (store (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset (* 8 v_main_~i~0_178)) v_ArrVal_576) c_main_~a~0.offset))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_178))))) is different from false [2022-01-31 12:12:18,701 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_main_~i~0_178 Int)) (or (forall ((v_ArrVal_576 Int)) (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (select (store (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset (* 8 v_main_~i~0_178)) v_ArrVal_576) c_main_~a~0.offset))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_178)))) (forall ((v_ArrVal_576 Int) (v_main_~i~0_178 Int) (v_ArrVal_573 Int)) (or (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (select (store (store (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset (* c_main_~i~0 8) 8) v_ArrVal_573) (+ c_main_~a~0.offset (* 8 v_main_~i~0_178)) v_ArrVal_576) c_main_~a~0.offset)) (not (<= (+ c_main_~i~0 2) v_main_~i~0_178))))) is different from false [2022-01-31 12:12:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:12:20,213 INFO L93 Difference]: Finished difference Result 162 states and 184 transitions. [2022-01-31 12:12:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 12:12:20,214 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 83 states have internal predecessors, (110), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-01-31 12:12:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:12:20,214 INFO L225 Difference]: With dead ends: 162 [2022-01-31 12:12:20,214 INFO L226 Difference]: Without dead ends: 162 [2022-01-31 12:12:20,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1853 ImplicationChecksByTransitivity, 732.2s TimeCoverageRelationStatistics Valid=470, Invalid=8696, Unknown=166, NotChecked=970, Total=10302 [2022-01-31 12:12:20,217 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 4175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3186 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 12:12:20,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1146 Invalid, 4175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 981 Invalid, 0 Unknown, 3186 Unchecked, 0.7s Time] [2022-01-31 12:12:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-01-31 12:12:20,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 156. [2022-01-31 12:12:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 146 states have (on average 1.1506849315068493) internal successors, (168), 147 states have internal predecessors, (168), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 12:12:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 177 transitions. [2022-01-31 12:12:20,221 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 177 transitions. Word has length 66 [2022-01-31 12:12:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:12:20,221 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 177 transitions. [2022-01-31 12:12:20,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 83 states have internal predecessors, (110), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:12:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 177 transitions. [2022-01-31 12:12:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 12:12:20,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:12:20,222 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:12:20,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 12:12:20,439 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,SelfDestructingSolverStorable9 [2022-01-31 12:12:20,439 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:12:20,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:12:20,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2064138394, now seen corresponding path program 8 times [2022-01-31 12:12:20,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:12:20,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292333525] [2022-01-31 12:12:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:12:20,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:12:20,466 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:12:20,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272713194] [2022-01-31 12:12:20,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 12:12:20,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:12:20,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:12:20,475 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) [2022-01-31 12:12:20,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-31 12:12:20,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 12:12:20,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:12:20,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 12:12:20,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:12:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-31 12:12:20,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:12:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-31 12:12:20,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:12:20,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292333525] [2022-01-31 12:12:20,852 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:12:20,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272713194] [2022-01-31 12:12:20,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272713194] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:12:20,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:12:20,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-01-31 12:12:20,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078547460] [2022-01-31 12:12:20,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 12:12:20,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 12:12:20,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:12:20,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 12:12:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-31 12:12:20,853 INFO L87 Difference]: Start difference. First operand 156 states and 177 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:12:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:12:21,231 INFO L93 Difference]: Finished difference Result 208 states and 225 transitions. [2022-01-31 12:12:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 12:12:21,231 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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 68 [2022-01-31 12:12:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:12:21,232 INFO L225 Difference]: With dead ends: 208 [2022-01-31 12:12:21,232 INFO L226 Difference]: Without dead ends: 205 [2022-01-31 12:12:21,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-01-31 12:12:21,233 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 189 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 12:12:21,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 128 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 12:12:21,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-01-31 12:12:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 177. [2022-01-31 12:12:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 163 states have (on average 1.0858895705521472) internal successors, (177), 165 states have internal predecessors, (177), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 12:12:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 191 transitions. [2022-01-31 12:12:21,237 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 191 transitions. Word has length 68 [2022-01-31 12:12:21,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:12:21,237 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 191 transitions. [2022-01-31 12:12:21,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:12:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 191 transitions. [2022-01-31 12:12:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 12:12:21,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:12:21,238 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:12:21,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-31 12:12:21,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:12:21,439 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:12:21,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:12:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2029907272, now seen corresponding path program 9 times [2022-01-31 12:12:21,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:12:21,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508059318] [2022-01-31 12:12:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:12:21,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:12:21,454 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:12:21,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056745611] [2022-01-31 12:12:21,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 12:12:21,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:12:21,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:12:21,455 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) [2022-01-31 12:12:21,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-31 12:12:21,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-31 12:12:21,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:12:21,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 12:12:21,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:12:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-31 12:12:21,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:12:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-31 12:12:22,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:12:22,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508059318] [2022-01-31 12:12:22,046 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:12:22,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056745611] [2022-01-31 12:12:22,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056745611] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:12:22,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:12:22,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-01-31 12:12:22,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287492009] [2022-01-31 12:12:22,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 12:12:22,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 12:12:22,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:12:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 12:12:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-31 12:12:22,048 INFO L87 Difference]: Start difference. First operand 177 states and 191 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:12:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:12:22,604 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2022-01-31 12:12:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 12:12:22,604 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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 68 [2022-01-31 12:12:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:12:22,605 INFO L225 Difference]: With dead ends: 165 [2022-01-31 12:12:22,605 INFO L226 Difference]: Without dead ends: 165 [2022-01-31 12:12:22,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-01-31 12:12:22,606 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 168 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 12:12:22,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 144 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 12:12:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-01-31 12:12:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 142. [2022-01-31 12:12:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 129 states have (on average 1.069767441860465) internal successors, (138), 130 states have internal predecessors, (138), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 12:12:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 150 transitions. [2022-01-31 12:12:22,609 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 150 transitions. Word has length 68 [2022-01-31 12:12:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:12:22,609 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 150 transitions. [2022-01-31 12:12:22,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:12:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 150 transitions. [2022-01-31 12:12:22,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 12:12:22,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:12:22,610 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:12:22,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-01-31 12:12:22,815 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,SelfDestructingSolverStorable11 [2022-01-31 12:12:22,815 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:12:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:12:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash 125323185, now seen corresponding path program 2 times [2022-01-31 12:12:22,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:12:22,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962408442] [2022-01-31 12:12:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:12:22,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:12:22,847 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:12:22,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734612221] [2022-01-31 12:12:22,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 12:12:22,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:12:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:12:22,849 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:12:22,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-31 12:12:22,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 12:12:22,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:12:22,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 73 conjunts are in the unsatisfiable core [2022-01-31 12:12:22,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:12:22,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-31 12:12:23,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-31 12:12:23,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 12:12:23,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-01-31 12:12:23,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:12:23,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-01-31 12:12:23,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:12:23,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2022-01-31 12:12:23,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 45 [2022-01-31 12:12:23,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-01-31 12:12:23,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-01-31 12:12:23,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-01-31 12:12:23,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-01-31 12:12:23,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:12:23,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 37 [2022-01-31 12:12:23,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:12:23,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2022-01-31 12:12:23,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:23,682 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 12:12:23,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2022-01-31 12:12:23,904 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 12:12:23,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2022-01-31 12:12:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 12:12:23,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:12:24,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:12:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962408442] [2022-01-31 12:12:24,091 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:12:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734612221] [2022-01-31 12:12:24,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734612221] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 12:12:24,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 12:12:24,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-01-31 12:12:24,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550816904] [2022-01-31 12:12:24,091 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 12:12:24,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 12:12:24,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:12:24,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 12:12:24,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 12:12:24,092 INFO L87 Difference]: Start difference. First operand 142 states and 150 transitions. Second operand has 32 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 12:12:24,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:12:24,787 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2022-01-31 12:12:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 12:12:24,787 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2022-01-31 12:12:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:12:24,788 INFO L225 Difference]: With dead ends: 150 [2022-01-31 12:12:24,788 INFO L226 Difference]: Without dead ends: 148 [2022-01-31 12:12:24,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=1437, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 12:12:24,789 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 57 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 12:12:24,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 305 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 609 Invalid, 0 Unknown, 81 Unchecked, 0.5s Time] [2022-01-31 12:12:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-01-31 12:12:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2022-01-31 12:12:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 131 states have (on average 1.0610687022900764) internal successors, (139), 131 states have internal predecessors, (139), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 12:12:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 151 transitions. [2022-01-31 12:12:24,792 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 151 transitions. Word has length 74 [2022-01-31 12:12:24,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:12:24,792 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 151 transitions. [2022-01-31 12:12:24,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 12:12:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 151 transitions. [2022-01-31 12:12:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 12:12:24,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:12:24,793 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:12:24,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-31 12:12:24,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 12:12:24,995 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:12:24,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:12:24,996 INFO L85 PathProgramCache]: Analyzing trace with hash 142637166, now seen corresponding path program 10 times [2022-01-31 12:12:24,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:12:24,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143620364] [2022-01-31 12:12:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:12:24,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:12:25,020 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:12:25,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706779813] [2022-01-31 12:12:25,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 12:12:25,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:12:25,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:12:25,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:12:25,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-31 12:12:25,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 12:12:25,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:12:25,157 WARN L261 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 154 conjunts are in the unsatisfiable core [2022-01-31 12:12:25,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:12:25,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-31 12:12:25,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 12:12:25,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-01-31 12:12:25,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-01-31 12:12:25,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-01-31 12:12:25,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:12:25,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-01-31 12:12:25,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:12:25,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 70 [2022-01-31 12:12:25,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:12:25,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:12:25,948 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 65